CN106785232B - Special graphite heating plate for new energy electric automobile and preparation method thereof - Google Patents
Special graphite heating plate for new energy electric automobile and preparation method thereof Download PDFInfo
- Publication number
- CN106785232B CN106785232B CN201611219339.6A CN201611219339A CN106785232B CN 106785232 B CN106785232 B CN 106785232B CN 201611219339 A CN201611219339 A CN 201611219339A CN 106785232 B CN106785232 B CN 106785232B
- Authority
- CN
- China
- Prior art keywords
- graphite film
- basic processing
- graphite
- sheet
- insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- 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
Abstract
The special graphite heating sheet for the new energy electric automobile comprises a basic processing graphite film, wherein the basic processing graphite film is a flexible graphite sheet processed into continuous U shape, two ends of the flexible graphite sheet are respectively connected with copper foils, the copper foils are used as electrodes to be connected with a power supply, and the copper foils are hard-connected with the two ends of the flexible graphite sheet through connecting pieces; the upper surface and the lower surface of the basic processing graphite film are respectively covered with an insulating material layer, the basic processing graphite film further comprises an additional layer which is laid outside at least one insulating material layer, the basic processing graphite film sequentially comprises an insulating double faced adhesive tape, an additional whole graphite film and an additional insulating layer from inside to outside, the additional whole graphite film is a whole flexible graphite sheet, the heating sheet can be tightly adhered to the surface of the power battery by utilizing the characteristics of thinness, softness and high thermal conductivity of the high thermal conductivity graphite sheet, the battery is heated by utilizing the excellent heat transfer characteristic of the graphite sheet, the cost is low, the manufacturing process has no environmental pollution, the heating speed is high, the temperature uniformity is good, and the electric heating application of the power battery is facilitated.
Description
Technical Field
The invention belongs to the technical field of heating of power batteries, and particularly relates to a special graphite heating sheet for a new energy electric automobile and a preparation method thereof.
Background
Along with the development of scientific technology, the new energy source gradually adopts a power lithium battery as a power source, the working temperature of the power lithium battery is generally 5-45 ℃, and when the battery is in a low-temperature environment, the charge and discharge performance is obviously attenuated, and even the battery cannot work normally. Therefore, in severe cold seasons, the power lithium battery is often required to be heated to a certain temperature for normal use, and the current heating mode commonly adopted by the power lithium battery is to directly install an electric heating plate on the surface of the battery for heating.
The conventional electric heating plate is generally manufactured by using an alloy material as a core plate, etching a circuit on the surface of the core plate, and encapsulating an insulating material. On one hand, the process operation of the etching circuit is complex and tedious, the water consumption for production is large, the waste water pollutants are various, the components are complex, and the environmental hazard is large; on the other hand, due to the performance limitation of alloy materials, the heating efficiency of the heating mode is low, the consistency of the temperature among the batteries cannot be ensured, and an important index of the heating effect and the safety performance is the uniformity of the temperature distribution of the heating surface.
The high heat conduction graphite flake material is formed by stacking regular two-dimensional carbon atom layers at a certain layer spacing in the Z-axis direction, and is of high flatness, light and thin, easy to process (graphics can be directly drawn in manufacturing), ageing-resistant, and applicable to the field of heat conduction and heat transfer, the graphite flake material can rapidly transfer heat along the plane direction due to the higher thermal diffusion coefficient, the heating effect is rapidly realized, and the soaking effect is good. The excellent flexibility and mechanical properties enable the heat-conducting material to adapt to any surface shape, and the heat-conducting material is tightly adhered to the surface of a heating receptor, so that high-efficiency heat transfer is realized.
Disclosure of Invention
The invention provides a graphite heating sheet special for a new energy electric automobile and a preparation method thereof, which can be used in the new energy electric automobile. Compared with the existing nickel alloy heating plate, the nickel alloy heating plate has the advantages of low manufacturing cost, no environmental pollution in the process, high temperature rising speed and good temperature uniformity; compared with the bulk graphite material, the composite material has the advantages of light weight, thinness and softness, can be well contacted with a power battery, and is beneficial to the electric heating application of the power battery.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a special graphite heating plate of new forms of energy electric automobile, includes basic processing graphite film, its characterized in that: the basic processing graphite film is a flexible graphite sheet processed into a continuous U shape, two ends of the flexible graphite sheet are respectively connected with copper foils, the copper foils are used as electrodes to be connected with a power supply, and the two copper foils are respectively laid on the upper surface and the lower surface of the flexible graphite sheet at the end part of the basic processing graphite film; the copper foil is hard-connected with the two ends of the flexible graphite sheet through a connecting piece; the upper surface and the lower surface of the basic processing graphite film are respectively covered with an insulating material layer.
As a preferable technical scheme of the invention, the flexible graphite composite material further comprises an additional layer which is laid outside the insulating material layer on at least one side, wherein the additional layer sequentially comprises an insulating double faced adhesive tape, an additional whole piece of graphite film and an additional insulating layer from inside to outside, and the additional whole piece of graphite film is a whole piece of flexible graphite sheet.
The connecting piece can be composed of bolts and nuts, the bolts penetrate through the upper copper foil layer, the lower copper foil layer and the middle basic processing graphite film layer, the nuts are respectively arranged at the two ends of the connecting piece to achieve fixed connection, and bolt reserved holes are formed in corresponding positions on the copper foil layer and the basic processing graphite film layer.
The connecting piece can also only use the connection sheetmetal, the connection sheetmetal is the banding, makes a round trip to pierce through two-layer copper foil and middle basic processing graphite membrane from top to bottom, and two tip and copper foil welded fastening, correspond the position on copper foil and the basic processing graphite membrane and establish the preformed hole that is used for connecting the sheetmetal to wear from top to bottom.
Further preferably, the thickness of the base processed graphite film ranges from 0.025mm to 0.3mm, preferably from 0.05mm to 0.25mm; the processing line width is 5-20 mm, and the line width of the spare part is not more than 5mm.
Further preferably, the insulating material layers on the upper surface and the lower surface of the basic processing graphite film are the same or different in material types and are one or two of polyimide single-sided adhesive tape, FR-4 board or silica gel; the additional insulating layer is one of polyimide single-sided adhesive tape, FR-4 board or silica gel; the insulating double faced adhesive tape is double faced adhesive tape resistant to the temperature of more than 80 ℃.
Further preferably, the thickness of the insulating material layer ranges from 0.05mm to 0.125mm; the thickness of the additional insulating layer ranges from 0.05mm to 0.125mm; the thickness of the insulating double faced adhesive tape is not more than 0.050mm.
Further preferably, the copper foil has a thickness ranging from 20 to 50 μm, a width greater than a processed line width of the base processed graphite film and less than a sum of the processed line width of the base processed graphite film and twice a free portion line width.
More preferably, in the plane where the basic processing graphite film is located, the vacant part is filled with insulating material which is suitable for the thickness of the basic processing graphite film, so that a dispersed or continuous embedded insulating area is formed.
The invention also provides a preparation method of the graphite heating sheet special for the new energy electric automobile, which is characterized by comprising the following steps of:
step one, processing and manufacturing a basic processed graphite film;
secondly, copper foils are respectively arranged at two end parts of the flexible graphite sheet of the basic processing graphite film, and the copper foils are not contacted with other parts of the flexible graphite sheet;
fixing the copper foil flexible graphite sheet by using a connecting piece;
step four, arranging an insulating material layer on the surface of one side of the basic processing graphite film;
step five, filling insulating materials which are suitable for the thickness of the basic processing graphite film in the spare parts of the basic processing graphite film according to the requirements to form dispersed or continuous embedded insulating areas;
step six, laying another insulating material layer on one side of the copper foil of the basic processing graphite film;
step seven, laying an additional layer outside the insulating material layer on at least one side, and laying an insulating double-sided adhesive tape, an additional whole piece of graphite film and an additional insulating layer in sequence from inside to outside;
and step eight, performing overall quality inspection, and thus, completing the preparation of the graphite heating sheet special for the energy electric automobile.
Compared with the prior art, the invention has the key points and innovation points that:
1. the electric conduction and heat transfer are fast: the graphite sheet is a soaking heat dissipation material commonly used in the 3C field, the graphite sheet can be used for processing a basic processed graphite film into patterns by a simple cutting method by utilizing excellent electric conduction and heat transfer properties, a heat transfer circuit with continuous bending is formed inside, and the graphite sheet is directly used after being packaged by adopting an insulating material, so that the heating speed is high;
2. the heating uniformity is good: the graphite sheet material has outstanding soaking heat dissipation performance, the heating sheet manufactured by the graphite sheet material has good temperature uniformity, and meanwhile, an additional whole unprocessed graphite film is further adopted as a soaking material to be adhered to the rear of the processed basic processed graphite film, so that the temperature uniformity of the graphite sheet material is further improved;
3. the heating circuit is simple to process and operate: the heating line of the heating plate can be formed by direct cutting, is convenient and quick, has no pollution to the environment, and solves the problems that the heating wire of the existing heating plate adopts alloy or metal materials, the line can be obtained by etching, the operation is complex and complicated, the water consumption for production is large, the waste water pollutants are various, the components are complex and the environmental hazard is large;
4. and (3) application of embedding an insulating region: the embedded insulating area is filled in the vacant part of the basic processing graphite film and is adapted to the thickness of the basic processing graphite film, so that the thickness of the whole structure is uniform, the whole connection strength is ensured, the cracking of upper and lower insulating materials is avoided, the tightness of the basic processing graphite film is enhanced, the oxidation of the basic processing graphite film is prevented, and the service life is prolonged;
5. application of the connecting piece: because the brittleness of the graphite film is large, how to realize the fixed connection of the graphite film and the copper foil is a difficult problem, the invention provides two optional connecting pieces, the copper foil and the two ends of the flexible graphite sheet are firmly fixed, and the integrity of the graphite film and the integrity of products are ensured on the premise that the heat transfer and the conductivity of the whole heating sheet are not affected.
Drawings
The foregoing and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative only and not limiting of the invention, wherein:
fig. 1 is a schematic structural diagram of an embodiment 1 of a graphite heating sheet special for a new energy electric vehicle according to the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of a graphite heating sheet special for a new energy electric vehicle according to the present invention;
FIG. 3 is a schematic top view of the structure of FIGS. 1 and 2;
FIG. 4 is a schematic view of the structure of a processed basic processed graphite film;
FIG. 5 is a schematic view of a structure in which copper foil is temporarily fixed to both end portions of a base work graphite film;
FIG. 6 is a schematic view of a connector according to the present invention;
FIG. 7 is a side view of FIG. 6;
FIG. 8 is a schematic view of another connector according to the present invention;
fig. 9 is a side view of fig. 8.
FIG. 10 is a schematic diagram of the heating rate of a graphite heating plate special for a new energy electric vehicle after connecting a power supply;
fig. 11 is an infrared thermal imaging test chart of the graphite heating sheet special for the new energy electric automobile after the power supply is connected.
Reference numerals: 1-basic processing graphite film, 2-copper foil, 3-insulating material layer, 4-insulating double faced adhesive tape, 5-additional whole piece of graphite film, 6-additional insulating layer, 7-embedded insulating area, 8-connecting piece, 81-connecting metal sheet, 82-welding point, 83-bolt and 84-nut.
Detailed Description
Hereinafter, embodiments of a new energy electric vehicle-specific graphite heating sheet and a method of manufacturing the same of the present invention will be described with reference to the accompanying drawings.
The examples described herein are specific embodiments of the present invention, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the invention to the embodiments and scope of the invention. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification of the present application, including those adopting any obvious substitutions and modifications to the embodiments described herein.
The drawings in the present specification are schematic views, which assist in explaining the concept of the present invention, and schematically show the shapes of the respective parts and their interrelationships. Note that, in order to clearly show the structures of the components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.
The principles and features of the present invention are described below in connection with three embodiments, the examples being set forth only for purposes of illustration and not for limiting the scope of the invention.
Example 1
Referring to fig. 1, 3-5, a schematic structural diagram of embodiment 1 is shown, and a graphite heating sheet special for a new energy electric vehicle includes a basic processing graphite film 1, wherein the thickness range of the basic processing graphite film 1 is 0.025 mm-0.3 mm, preferably 0.05 mm-0.25 mm, and preferably 200mm by 0.025mm, the processing line width of the basic processing graphite film 1 is 5-20 mm, the line width of the spare part is not more than 5mm, preferably 10mm, and the spare part is 2mm, the two ends of the basic processing graphite film 1 are flexible graphite sheets processed into continuous U-shape, and the two ends of the flexible graphite sheets are respectively connected with copper foil 2 through connectors, and the copper foil 2 is used as an electrode connection power supply and is respectively laid on the upper surface and the lower surface of the flexible graphite sheet at the end part of the basic processing graphite film 1; the copper foil 2 is hard-connected with the two ends of the flexible graphite sheet through connecting pieces; the connector fixes the copper foil 2 on the upper and lower surfaces of the two end parts of the flexible graphite sheet processed into a continuous U shape, and does not contact other parts of the flexible graphite sheet. The thickness of the copper foil 2 is 20-50 μm, preferably 25 μm, the width of the copper foil 2 is larger than the processing line width of the basic processing graphite film 1, and smaller than the sum of the processing line width of the basic processing graphite film 1 and the line width of the two times of the spare part, the width of the copper foil in this embodiment is 11mm, and the copper foil 2 is used as an electrode connection power supply. The upper surface and the lower surface of the basic processing graphite film 1 are respectively covered with an insulating material layer 3, the materials of the insulating material layers 3 on the upper surface and the lower surface can be the same or different, the insulating material layers are one or two of polyimide single-sided adhesive, FR-4 board or silica gel, black polyimide single-sided adhesive with 200 ℃ temperature resistance and 0.1mm thickness is preferred, and the thickness range of the insulating material layer 3 is 0.05 mm-0.125 mm. In the plane of the basic processing graphite film 1, the empty part is filled with insulating material corresponding to the thickness of the basic processing graphite film 1 to form dispersed or continuous embedded insulating areas 7.
The graphite heating sheet special for the new energy electric automobile of the embodiment 1 is manufactured as follows:
step one, processing and manufacturing a basic processed graphite film 1;
secondly, copper foils 2 are respectively arranged at two end parts of the flexible graphite sheet of the basic processing graphite film 1, and the two end parts are not contacted with other parts of the flexible graphite sheet;
fixing the flexible graphite sheet of the copper foil 2 by using a connecting piece;
step four, arranging an insulating material layer 3 on the surface of one side of the basic processing graphite film 1;
step five, filling insulating materials which are suitable for the thickness of the basic processing graphite film 1 in the spare part of the basic processing graphite film 1 according to the requirement to form dispersed or continuous embedded insulating areas 7;
step six, laying another insulating material layer 3 on one side of the basic processing graphite film 1, on which the copper foil 2 is arranged;
and step seven, performing overall quality inspection, and thus, preparing the graphite heating sheet special for the energy electric automobile.
Example 2
As shown in fig. 2, 3-5, which are schematic structural views of embodiment 2, on the basis of embodiment 1, an additional layer is further laid outside at least one side of the insulating material layer 3, and the additional layer comprises an insulating double faced adhesive tape 4, an additional whole piece of graphite film 5 and an additional insulating layer 6 from inside to outside, wherein the additional whole piece of graphite film 5 is a whole piece of flexible graphite sheet; the additional insulating layer 6 is one of polyimide single-sided tape, FR-4 board or silica gel; the insulating double faced adhesive tape 4 is double faced adhesive tape resistant to the temperature of more than 80 ℃. The thickness range of the insulating material layer 3 is 0.05 mm-0.125 mm; the thickness of the additional insulating layer 6 ranges from 0.05mm to 0.125mm; the thickness of the insulating double faced adhesive tape 4 is not more than 0.050mm. The manufacturing method comprises the following steps:
firstly, processing and manufacturing a basic processed graphite film 1, wherein the size of the basic processed graphite film 1 is 185mm x 175mm x 0.1mm; the processing line width is 10mm, and the spare part is 5mm;
secondly, copper foils 2 are respectively arranged at two end parts of the flexible graphite sheet of the basic processing graphite film 1, the copper foils do not contact other parts of the flexible graphite sheet, the width of the copper foils is 15mm, and the thickness of the copper foils is 25 mu m;
fixing the flexible graphite sheet of the copper foil 2 by using a connecting piece;
step four, arranging an insulating material layer 3 on the surface of one side of the basic processing graphite film 1, wherein the insulating material layer is preferably black polyimide single-sided adhesive with the thickness of 0.075mm and can resist the temperature of 200 ℃;
step five, filling insulating materials which are suitable for the thickness of the basic processing graphite film 1 in the spare part of the basic processing graphite film 1 according to the requirement to form dispersed or continuous embedded insulating areas 7;
step six, laying another insulating material layer 3 on one side of the basic processing graphite film 1, on which the copper foil 2 is arranged;
step seven, laying an additional layer outside the insulating material layer 3 on one side, and laying an insulating double faced adhesive tape 4, an additional whole piece of graphite film 5 and an additional insulating layer 6 in sequence from inside to outside, wherein the size of the additional whole piece of graphite film 5 is 185mm x 175mm x 0.025mm;
and step eight, performing overall quality inspection, and thus, completing the preparation of the graphite heating sheet special for the energy electric automobile.
The connecting piece in the foregoing embodiment 1 or embodiment 2 may have two options, in the first embodiment, as shown in fig. 6 and fig. 7, the connecting piece is a connecting metal piece 81, the connecting metal piece 81 is in a strip shape, two layers of copper foil 2 and a middle basic processing graphite film 1 penetrate back and forth up and down, two ends are welded and fixed with the copper foil 2, and corresponding positions on the copper foil 2 and the basic processing graphite film 1 are provided with preformed holes for connecting the connecting metal piece 81 up and down. During construction, four reserved holes are drilled on a part of the stretched base processing graphite film 1, then electrode materials such as copper foil or stainless steel alloy and the like are wrapped up and down on the base processing graphite film 1, other alloy materials or copper foil are cut out to be proper sizes just capable of passing through the reserved holes, the upper and lower penetrating belts penetrate through the reserved holes, and finally the upper and lower ends are welded and fixed at welding spots 82.
The other connecting piece is shown in fig. 8 and 9, and consists of a bolt 83 and a nut 84, wherein the bolt 83 penetrates through the upper copper foil 2 and the lower copper foil 2 and the middle basic processing graphite film 1, the nuts 84 are respectively arranged at the two ends of the upper copper foil and the lower copper foil, so that fixed connection is realized, and bolt reserved holes are formed in corresponding positions on the copper foil 2 and the basic processing graphite film 1. When the graphite film is manufactured, two bolt reserved holes are punched on the connecting part of the basic processing graphite film 1, then electrode materials such as copper foil, aluminum foil or stainless steel alloy are wrapped on the upper part and the lower part of the basic processing graphite film 1, and the electrode materials are fixed by bolts or rivets.
Comparative example
An electric heating plate for heating a power battery pack comprises an upper layer and a lower layer, wherein the upper layer and the lower layer can resist 200 ℃, the thickness of the upper layer and the lower layer is 0.075mm of black polyimide single-sided adhesive, and the middle layer is 185mm x 175mm of nickel alloy circuit layers which are 0.1 mm. Nickel alloy circuit linewidth, gap, and strike were set according to the 80W power and 20V voltage used in the test of examples 1, 2.
Firstly, lead wires are welded on two poles of an etched nickel alloy circuit, then black polyimide single-sided adhesive is packaged on two sides, and only two electrode wires are exposed outside after packaging, so that an external constant voltage power supply is connected.
The same power supply is connected to the heating plates of 2 examples and 1 comparative example, test data such as voltage, current, temperature after heating for 60S, time consumption for heating for 80 ℃ and surface temperature difference at 80 ℃ in the heating plates are collected, and data analysis is performed, and test results are shown in table 1:
table 1.2 test results for examples and 1 comparative example
The test data are analyzed, as shown in fig. 10, which is a schematic diagram of average heating speed of two embodiments of a graphite heating plate special for a new energy electric automobile after being connected with a power supply, and as can be seen from the figure, the heating plate can be heated to 80 ℃ which is the temperature required by heating a power battery pack of the new energy electric automobile only by 20 seconds at 80W power, the heating speed is high, the graphite plate is a common soaking heat dissipation material in the 3C field, the graphite film is processed into a graph by utilizing excellent electric conduction and heat transfer performance through a simple cutting method, a heat transfer circuit with continuous bending is formed inside, and the graphite film is directly used after being packaged by adopting an insulating material, so that the heating speed is high.
The infrared thermal imager is used for testing the temperature condition at 80 ℃, as shown in fig. 11, the uniformity is excellent, the soaking heat dissipation performance of the graphite sheet material is outstanding, the heating sheet manufactured by the infrared thermal imager is good in temperature uniformity, and meanwhile, the unprocessed additional whole graphite film is further adopted as a soaking material to be attached to the rear of the processed basic processed graphite film, so that the temperature uniformity of the infrared thermal imager is further improved.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The utility model provides a special graphite heating plate of new forms of energy electric automobile, includes basic processing graphite film (1), its characterized in that: the basic processing graphite film (1) is a flexible graphite sheet processed into a continuous U shape, two ends of the flexible graphite sheet are respectively connected with copper foils (2), the copper foils (2) are used as electrodes to be connected with a power supply, and the two flexible graphite sheets are respectively laid on the upper surface and the lower surface of the flexible graphite sheet at the end part of the basic processing graphite film (1); the copper foil (2) is hard-connected with the two ends of the flexible graphite sheet through a connecting piece; the upper surface and the lower surface of the basic processing graphite film (1) are respectively covered with an insulating material layer (3);
the insulating material layer (3) is arranged on at least one side of the insulating material layer, the insulating double-sided adhesive tape (4), an additional whole graphite film (5) and an additional insulating layer (6) are sequentially arranged on the other side of the insulating material layer from inside to outside, and the additional whole graphite film (5) is a whole flexible graphite sheet; the processing line width of the basic processing graphite film (1) is 5-20 mm, and the line width of the spare part is not more than 5mm;
in the plane of the basic processing graphite film (1), filling insulating materials with the thickness corresponding to the thickness of the basic processing graphite film (1) in the spare part to form a dispersed or continuous embedded insulating area (7);
the connecting piece is a connecting metal sheet (81), the connecting metal sheet (81) is in a strip shape, two layers of copper foils (2) and a middle basic processing graphite film (1) penetrate back and forth up and down, two ends are welded and fixed with the copper foils (2), and reserved holes for connecting the metal sheet (81) are formed in corresponding positions on the copper foils (2) and the basic processing graphite film (1).
2. The special graphite heating plate for the new energy electric automobile, according to claim 1, is characterized in that: the connecting piece comprises a bolt (83) and a nut (84), wherein the bolt (83) penetrates through the upper copper foil (2) and the lower copper foil (2) and the middle basic processing graphite film (1), the nuts (84) are respectively arranged at the two ends of the connecting piece to realize fixed connection, and bolt reserved holes are formed in corresponding positions on the copper foil (2) and the basic processing graphite film (1).
3. The special graphite heating plate for the new energy electric automobile, according to claim 1, is characterized in that: the thickness of the basic processing graphite film (1) ranges from 0.025mm to 0.3mm, or from 0.05mm to 0.25mm.
4. The special graphite heating plate for the new energy electric automobile, according to claim 1, is characterized in that: the insulating material layers (3) on the upper surface and the lower surface of the basic processing graphite film (1) are the same or different in material types and are one or two of polyimide single-sided adhesive tape, FR-4 board or silica gel; the additional insulating layer (6) is one of polyimide single-sided adhesive tape, FR-4 board or silica gel; the insulating double faced adhesive tape (4) is a double faced adhesive tape resistant to the temperature of more than 80 ℃.
5. The special graphite heating plate for the new energy electric automobile, according to claim 1, is characterized in that: the thickness range of the insulating material layer (3) is 0.05 mm-0.125 mm; the thickness of the additional insulating layer (6) ranges from 0.05mm to 0.125mm; the thickness of the insulating double faced adhesive tape (4) is not more than 0.050mm.
6. The special graphite heating plate for the new energy electric automobile, according to claim 1, is characterized in that: the thickness of the copper foil (2) ranges from 20 to 50 mu m, the width is larger than the processing line width of the basic processing graphite film (1) and is smaller than the sum of the processing line width of the basic processing graphite film (1) and the line width of the double spare part.
7. The preparation method of the graphite heating sheet special for the new energy electric automobile, which is characterized by comprising the following steps of:
step one, processing and manufacturing a basic processed graphite film (1);
secondly, copper foils (2) are respectively arranged at two end parts of a flexible graphite sheet of the basic processing graphite film (1) and are not contacted with other parts of the flexible graphite sheet;
fixing the flexible graphite sheet of the copper foil (2) by using a connecting piece;
fourthly, arranging an insulating material layer (3) on the surface of one side of the basic processing graphite film (1);
fifthly, filling insulating materials which are suitable for the thickness of the basic processing graphite film (1) in the spare part of the basic processing graphite film (1) according to the requirement to form a dispersed or continuous embedded insulating area (7);
step six, laying another insulating material layer (3) on one side of the copper foil (2) arranged on the basic processing graphite film (1);
step seven, laying an additional layer outside the insulating material layer (3) on at least one side, and sequentially laying an insulating double-sided adhesive (4), an additional whole graphite film (5) and an additional insulating layer (6) from inside to outside;
and step eight, performing overall quality inspection, and thus, completing the preparation of the graphite heating sheet special for the energy electric automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219339.6A CN106785232B (en) | 2016-12-26 | 2016-12-26 | Special graphite heating plate for new energy electric automobile and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219339.6A CN106785232B (en) | 2016-12-26 | 2016-12-26 | Special graphite heating plate for new energy electric automobile and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106785232A CN106785232A (en) | 2017-05-31 |
| CN106785232B true CN106785232B (en) | 2023-06-16 |
Family
ID=58925198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611219339.6A Active CN106785232B (en) | 2016-12-26 | 2016-12-26 | Special graphite heating plate for new energy electric automobile and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106785232B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601113A (en) * | 2018-07-13 | 2018-09-28 | 江苏墨泰新材料有限公司 | A kind of graphite Electric radiant Heating Film and its preparation method and application |
| CN111509323A (en) * | 2019-01-30 | 2020-08-07 | 雷达 | Graphene thermal management method for new energy automobile power battery |
| CN109950664A (en) * | 2019-03-29 | 2019-06-28 | 杜武浩 | A kind of heating sheet and the new energy battery pack equipped with the heating sheet |
| CN110828942A (en) * | 2019-10-25 | 2020-02-21 | 荣盛盟固利新能源科技有限公司 | Planar heating film for lithium ion power battery and lithium ion power battery |
| JP7439304B2 (en) | 2020-12-28 | 2024-02-27 | 三菱重工業株式会社 | Composite material joining equipment and composite material joining method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480394A (en) * | 2002-06-18 | 2004-03-10 | 东洋炭素株式会社 | Plexible high pureness expanded graphite sheet, mfg. same and graphite crucible lining using same |
| JP2013216577A (en) * | 2013-07-25 | 2013-10-24 | Kaneka Corp | Graphite film and method for producing graphite film |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006129632A1 (en) * | 2005-05-30 | 2006-12-07 | Kaneka Corporation | Process for producing graphite film and graphite film produced thereby |
| US9835390B2 (en) * | 2013-01-07 | 2017-12-05 | Nanotek Instruments, Inc. | Unitary graphene material-based integrated finned heat sink |
| CN104167574A (en) * | 2013-05-17 | 2014-11-26 | 同济大学 | Passive phase-change material cooling system for power battery of electric automobile |
| CN104768243A (en) * | 2015-04-07 | 2015-07-08 | 上海交通大学 | Graphite sheet electrical heating component and manufacturing method thereof |
| CN204730312U (en) * | 2015-05-26 | 2015-10-28 | 江苏悦达新材料科技有限公司 | A kind of graphite compound electric heating floor |
| CN205609635U (en) * | 2016-05-13 | 2016-09-28 | 合肥工业大学 | Power battery heat accuse box |
-
2016
- 2016-12-26 CN CN201611219339.6A patent/CN106785232B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480394A (en) * | 2002-06-18 | 2004-03-10 | 东洋炭素株式会社 | Plexible high pureness expanded graphite sheet, mfg. same and graphite crucible lining using same |
| JP2013216577A (en) * | 2013-07-25 | 2013-10-24 | Kaneka Corp | Graphite film and method for producing graphite film |
Non-Patent Citations (2)
| Title |
|---|
| graphite film/aluminum laminate composites with ultrahigh thermal conductivity for thermal management applications;Huang Yu等;《Materials&design》;第90卷;第508-515页 * |
| 锂离子动力电池制造关键技术基础及其安全性研究;郭永兴;《中国博士学位论文全文数据库（电子期刊）工程科技II辑》;第C042-58页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106785232A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106785232B (en) | Special graphite heating plate for new energy electric automobile and preparation method thereof | |
| CN204651380U (en) | Battery core syndeton | |
| CN106711512B (en) | Soft-package battery production method based on measurable internal temperature of battery device | |
| CN103545530B (en) | Collector, lithium ion cell electrode and lithium ion battery | |
| CN113851550A (en) | Solar cell string and preparation method and application thereof | |
| CN104078522A (en) | Light solar cell subarray, manufacturing method of light solar cell subarray and cell array | |
| US20100203378A1 (en) | Device providing electrical connection between electrochemical cells | |
| CN206340639U (en) | A kind of New-energy electric vehicle special graphite heating plate | |
| CN107394093B (en) | Battery core connecting strip, battery connecting structure and battery combination | |
| CN210579283U (en) | High-uniformity electric heating film | |
| CN201364748Y (en) | Core and conducting wire structure utilizing same | |
| CN215418199U (en) | Solar cell string and photovoltaic module comprising same | |
| CN206122853U (en) | Power battery electric connector welding jig | |
| TW201135945A (en) | Conductive ribbon of photovoltaic panel and method for manufacturing conductive channel including conductive ribbon | |
| CN108258076A (en) | A kind of solar cell module using shape welding band | |
| CN206040793U (en) | Compound area of copper nickel that high magnification battery used | |
| CN208315570U (en) | A kind of solar battery sheet component using shape welding band | |
| CN218783041U (en) | Back contact solar cell module | |
| CN202434616U (en) | Plated aluminum tab with rivet hole | |
| CN211907560U (en) | Power battery integrated busbar with composite terminal structure | |
| CN203134928U (en) | Lithium ion battery pack shunting and heat radiating device in vacuum environment | |
| CN205723877U (en) | A kind of battery module device | |
| TWI556953B (en) | A metal-based sheet composite graphite sheet | |
| CN217721813U (en) | Graphene thermal radiation copper foil | |
| CN219032058U (en) | Graphite radiating fin of mobile phone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |