CN102738441A - Method for preparing bipolar cell bipolar chip through thermal-spray coating - Google Patents
Method for preparing bipolar cell bipolar chip through thermal-spray coating Download PDFInfo
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- CN102738441A CN102738441A CN2012102058012A CN201210205801A CN102738441A CN 102738441 A CN102738441 A CN 102738441A CN 2012102058012 A CN2012102058012 A CN 2012102058012A CN 201210205801 A CN201210205801 A CN 201210205801A CN 102738441 A CN102738441 A CN 102738441A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to the technical field of bipolar cell bipolar chip, and especially relates to a method for preparing bipolar cell bipolar chip through thermal-spray coating. The method comprises the steps that: 1, a conductive composite material substrate is adopted as a composite substrate of the bipolar cell; hot pressing molding is carried out, such that a conductive bipolar chip substrate is obtained; 2, sand blasting treatment is carried out upon the upper surface and the lower surface of the conductive bipolar chip substrate; 3, a metal conductive material used for spray-coating is heated to a molten state by using a heat source; and through air blowing, the molten metal conductive material is atomized and is rapidly sprayed onto the two surfaces of the conductive bipolar chip substrate that is already processed through sand blasting, such that conductive metal coatings with required thicknesses are formed, and the bipolar cell bipolar chip is finally obtained. With the thermal-spray coating method for preparing the bipolar cell bipolar chip, a substrate material is not restricted, the temperature increasing of the substrate during the spraying process is small, such that stress and deformation are avoided. Also, the thicknesses of the coatings can be controlled, and the operation process is flexible. The method is advantaged in good adaptability and good economic benefit, and is suitable for application and popularization.
Description
Technical field
The present invention relates to the technical field of a kind of bipolar cell with bipolar sheets, especially a kind of thermal spraying overlay film prepares the method for bipolar cell with bipolar sheets.
Background technology
Be becoming tight international energy day with the increasingly serious background of environmental requirement under, market is increasing to the demand of battery, requires also increasingly high.And no matter bipolar cell is in electric power input, output than traditional one pole battery; Still on energy storage, all want superior a lot; Mainly be the two sides that is applied to bipolar substrate because of its active material, electric current can flow to next batteries from substrate, and current path is extremely short; So the loss of charge that in circuit, causes because of ohmic drop has reached minimum, therefore the battery volume also significantly reduces.Yet in bipolar cell, bipolar sheets should connect internal cell and hold active material again, and keeps apart each battery cell.Bipolar sheets must keep its conductivity under its electrolyte corrosive environment, and blocking-up adjacent cell electrolyte is communicated with, and must not participate in cell reaction or the loop is provided for self-discharge of battery.These just require bipolar sheets must have good electrical conductivity, acid and alkali-resistance, in the electrochemical window of battery, keep stable; Do not participate in cell reaction; Cell active materials there is the good adsorption ability, also will be easy to processing and sealing, require its manufacture craft simple simultaneously; Can be easy to large-scale production, and the bipolar sheets of prior art manufacturing is difficult to reach above requirement.
Summary of the invention
In order to overcome the short deficiency of bipolar sheets poorly conductive, complex manufacturing technology, manufacturing cost height and useful life that existing bipolar sheets manufacturing technology is made, the invention provides a kind of thermal spraying overlay film and prepare the method for bipolar cell with bipolar sheets.
The technical solution adopted for the present invention to solve the technical problems is: a kind of thermal spraying overlay film prepares the method for bipolar cell with bipolar sheets, and its method may further comprise the steps:
One. with the composite base plate of conducing composite material matrix, pass through the hot-forming bipolar sheets matrix that obtains conducting electricity as bipolar cell;
Two. conduction bipolar sheets body upper surface and lower surface are carried out blasting treatment;
Three. utilize thermal source that metallic conduction material to be sprayed is heated to molten condition; And blow through air-flow and to make its atomizing high velocity jet to two sides through the conduction bipolar sheets matrix of blasting treatment; Form the conducting metal sprayed coating of desired thickness, finally obtain bipolar cell and use bipolar sheets.
According to another embodiment of the invention, the molding thickness that further comprises said conduction bipolar sheets matrix is 0.7mm.
According to another embodiment of the invention, comprise that further said conducting metal sprayed coating thickness is 0.05mm.
According to another embodiment of the invention, comprise that further said metallic conduction material can be non-metallic conducting material, said heated condition can be the semi-molten state.
The invention has the beneficial effects as follows that it is unrestricted with the method basis material of bipolar sheets that this thermal spraying overlay film prepares bipolar cell, the coating material that can spray is extensive; Coating performance is varied, in the spraying process basis material temperature rise little, avoided generation stress and distortion; And coating layer thickness can be controlled, and operating procedure is flexible, does not receive the workpiece shape limits; Adaptability reaches good in economic efficiency by force, is easy to use promote.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is a process schematic representation of the present invention.
1. conducing composite material matrixes among the figure, 2. conduction bipolar sheets matrix, 3. conducting metal sprayed coating, 4. bipolar cell is used bipolar sheets.
Embodiment
Like Fig. 1 is process schematic representation of the present invention, and a kind of thermal spraying overlay film prepares the method for bipolar cell with bipolar sheets, and its method may further comprise the steps:
One. with the composite base plate of conducing composite material matrix 1, pass through the hot-forming bipolar sheets matrix 2 that obtains conducting electricity as bipolar cell;
Two. conduction bipolar sheets matrix 2 upper surfaces and lower surface are carried out blasting treatment;
Three. utilize thermal source that metallic conduction material to be sprayed is heated to molten condition; And blow through air-flow and to make its atomizing high velocity jet to two sides through the conduction bipolar sheets matrix 2 of blasting treatment; Form the conducting metal sprayed coating 3 of desired thickness, finally obtain bipolar cell with bipolar sheets 4.
The molding thickness of said conduction bipolar sheets matrix 2 is 0.7mm, and said conducting metal sprayed coating 3 thickness are 0.05mm, and said metallic conduction material can be non-metallic conducting material, and said heated condition can be the semi-molten state.
During manufacturing, the conducing composite material matrix of being processed by acidproof thermosetting polymer 1 passes through the hot-forming bipolar sheets matrix 2 that obtains conducting electricity, and its molding thickness is 0.7mm; Conduction bipolar sheets matrix 2 to moulding carries out blasting treatment, and its purpose is to make the no attachment in conducting base surface on the one hand, improves electric conductivity; Be bigger adhesive force to be provided on the other hand for thermal spraying; Use metal or non-metallic conducting material to carry out thermal spraying in its both sides subsequently, respectively spray the conducting film conducting metal or the nonmetal sprayed coating of last layer desired thickness in conduction bipolar sheets matrix 2 both sides, sprayed coating thickness is 0.005mm-1.5mm; Preferred thickness is 0.01mm-0.5mm; Generally speaking, anodal coating film phase anticathode coating film outline is thick, obtains required bipolar cell at last with bipolar sheets 4.Wherein, conduction bipolar sheets matrix can be conducting polymer plastics, conductive polymer composite, conductivity ceramics, conducting metal or nonmetallic materials; Plasma spray technology can be the common heat spraying methods of industry such as flame-spraying, the spraying of oxygen second flame powder, oxygen second flame wire spraying, oxygen second flame spray welding, HVOF, electric arc spraying, plasma spraying, air plasma spraying or low-voltage plasma spraying; The thermal source that provides for thermal spraying can be oxygen-second fuel gas, electric arc, plasma arc, electric heating, microwave or electromagnetism; The surface treatment of conduction bipolar sheets matrix can be physics sandblast, polishing or chemical erosion; The metallic conduction material of spraying can be sheet material, wire rod or the powder of lead base, Ni-based, iron-based, cobalt-based and alloy thereof, preferred lead base, Ni-based and alloy wire, powder; The non-metallic conducting material of spraying can be conductive carbon material and conducting polymer composite.
And then we press general known technology with resulting bipolar cell with bipolar sheets 4, are assembled into bipolar lead-acid battery and test.Confirmablely be, adopt plasma spray technology to be covered with the metal conducting layer of desired thickness in bipolar matrix both sides, when producing the required conduction bipolar sheets of high energy bipolar cell fast and effectively, prepared bipolar sheets is well positioned to meet the battery life requirement.And, with present our prepared bipolar lead-acid battery, the bond strength of sprayed coating and active material lead plaster even be superior to traditional grid structure; Trace it to its cause; Be exactly that thermally sprayed coating has good porous performance, when reducing technology difficulty, also increased the pole piece surface area, and then strengthened adhesive force; Reduce current density simultaneously, guaranteed the life-span of battery from many aspects.
It is unrestricted with the method basis material of bipolar sheets that this thermal spraying overlay film prepares bipolar cell, and the coating material that can spray is extensive, and coating performance is varied; The basis material temperature rise is little in the spraying process, avoided generation stress and distortion, and coating layer thickness can be controlled; Operating procedure is flexible; Do not receive the workpiece shape limits, adaptability reaches good in economic efficiency by force, is easy to use promote.
Claims (4)
1. a thermal spraying overlay film prepares the method for bipolar cell with bipolar sheets, it is characterized in that its method may further comprise the steps:
One. with the composite base plate of conducing composite material matrix (1), pass through the hot-forming bipolar sheets matrix (2) that obtains conducting electricity as bipolar cell;
Two. conduction bipolar sheets matrix (2) upper surface and lower surface are carried out blasting treatment;
Three. utilize thermal source that metallic conduction material to be sprayed is heated to molten condition; And blow through air-flow and to make its atomizing high velocity jet to two sides through the conduction bipolar sheets matrix (2) of blasting treatment; Form the conducting metal sprayed coating (3) of desired thickness, finally obtain bipolar cell with bipolar sheets (4).
2. thermal spraying overlay film according to claim 1 prepares the method for bipolar cell with bipolar sheets, it is characterized in that, the molding thickness of said conduction bipolar sheets matrix (2) is 0.7mm.
3. thermal spraying overlay film according to claim 1 prepares the method for bipolar cell with bipolar sheets, it is characterized in that, said conducting metal sprayed coating (3) thickness is 0.05mm.
4. thermal spraying overlay film according to claim 1 prepares the method for bipolar cell with bipolar sheets, it is characterized in that, said metallic conduction material can be non-metallic conducting material, and said heated condition can be the semi-molten state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102058012A CN102738441A (en) | 2012-06-21 | 2012-06-21 | Method for preparing bipolar cell bipolar chip through thermal-spray coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102058012A CN102738441A (en) | 2012-06-21 | 2012-06-21 | Method for preparing bipolar cell bipolar chip through thermal-spray coating |
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| Publication Number | Publication Date |
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| CN102738441A true CN102738441A (en) | 2012-10-17 |
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| CN2012102058012A Pending CN102738441A (en) | 2012-06-21 | 2012-06-21 | Method for preparing bipolar cell bipolar chip through thermal-spray coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531820A (en) * | 2013-10-09 | 2014-01-22 | 广东中商国通电子有限公司 | Carbon-based bipolar plate used for lead-acid storage battery and preparation method of the carbon-based bipolar plate |
| CN112117029A (en) * | 2020-09-30 | 2020-12-22 | 浙江长宇新材料有限公司 | Composite conductive film and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1592983A (en) * | 2001-01-19 | 2005-03-09 | 阿特拉沃达有限公司 | Electrode for a battery |
| CN101122019A (en) * | 2007-09-06 | 2008-02-13 | 王家德 | Metal thermal spraying and powder coating electrostatic spraying composite coat antiseptic technique |
-
2012
- 2012-06-21 CN CN2012102058012A patent/CN102738441A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1592983A (en) * | 2001-01-19 | 2005-03-09 | 阿特拉沃达有限公司 | Electrode for a battery |
| CN101122019A (en) * | 2007-09-06 | 2008-02-13 | 王家德 | Metal thermal spraying and powder coating electrostatic spraying composite coat antiseptic technique |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531820A (en) * | 2013-10-09 | 2014-01-22 | 广东中商国通电子有限公司 | Carbon-based bipolar plate used for lead-acid storage battery and preparation method of the carbon-based bipolar plate |
| CN112117029A (en) * | 2020-09-30 | 2020-12-22 | 浙江长宇新材料有限公司 | Composite conductive film and preparation method thereof |
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Application publication date: 20121017 |