CN112582097A - Conductive film for lead-acid storage battery and preparation method thereof - Google Patents
Conductive film for lead-acid storage battery and preparation method thereof Download PDFInfo
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- CN112582097A CN112582097A CN202011574116.8A CN202011574116A CN112582097A CN 112582097 A CN112582097 A CN 112582097A CN 202011574116 A CN202011574116 A CN 202011574116A CN 112582097 A CN112582097 A CN 112582097A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/14—Conductive material dispersed in non-conductive inorganic material
- H01B1/18—Conductive material dispersed in non-conductive inorganic material the conductive material comprising carbon-silicon compounds, carbon or silicon
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- 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
- H01M10/06—Lead-acid accumulators
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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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- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a conductive film for a lead-acid storage battery, which comprises a conductive layer and non-conductive layers positioned on two side surfaces of the conductive layer, wherein the conductive layer comprises a conductive carrier layer, and the conductive carrier layer comprises the following raw materials in parts by weight: 20-30 parts of superfine glass fiber, 5-10 parts of short fiber, 5-10 parts of conductor material and 50-60 parts of adhesive; the preparation method comprises the following steps: s1, preparing a conductive carrier: mixing and stirring the superfine glass fiber, the short fiber, the conductor material and the adhesive uniformly according to the parts by weight to form a paste; s2, preparing a conductive layer: coating a conductive carrier on two side surfaces of the glass fiber felt, and heating and drying at high temperature; and S3, respectively adhering glass fibers to two side surfaces of the conductive layer, and firmly combining the conductive layer and the glass fibers on the two sides into a whole. The invention can prevent the short circuit of the battery, can improve the conductivity of the storage battery, and can play a good role in conducting electricity especially when the conductivity of sulfuric acid is poor.
Description
Technical Field
The invention relates to the technical field of lead-acid storage batteries, in particular to a conductive film for a lead-acid storage battery and a preparation method thereof.
Background
The lead-acid storage battery is widely applied to equipment such as solar energy, wind energy, automobile power, golf cars, electric forklifts, road cleaning cars and automatic guide rail vehicles, and the battery is required to have deep circulation resistance, maintenance-free property, long service life, good battery uniformity and large span suitable for high and low temperatures in the environment.
The main components of the existing lead-acid storage battery comprise: the battery comprises a battery shell, a safety valve, a battery middle cover, a battery cover plate, a sheet flat positive plate, a sheet flat negative plate, a separator, sulfuric acid electrolytic liquid, a battery pole and the like.
At present, the lead-acid storage battery has the defects of low battery capacity, low material utilization rate, heavy storage battery, short service life and more problems in the use process, and meanwhile, because the bottom of the inner cavity of the battery is directly contacted with the anode and the cathode of the battery, a partition plate and the battery, the conductivity at the bottom of the inner cavity is very poor and only can be conducted by sulfuric acid, the conductivity effect is single, and the anode and the cathode in the battery have the hidden trouble of short circuit.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a conductive film for a lead-acid storage battery, which can enhance the conductivity of the battery and prevent the short circuit of the positive electrode and the negative electrode in the battery, and a preparation method thereof.
The technical scheme of the invention is as follows: the conductive film for the lead-acid storage battery comprises a conductive layer and non-conductive layers positioned on two side faces of the conductive layer, wherein the conductive layer comprises a conductive carrier layer, and the conductive carrier layer comprises the following raw materials in parts by mass: 20-30 parts of superfine glass fiber, 5-10 parts of short fiber, 5-10 parts of conductor material and 50-60 parts of adhesive.
The further technical scheme of the invention is as follows: the conductive layer further comprises a support carrier layer, and two side surfaces of the support carrier layer are coated with the conductive carrier layer respectively.
The further technical scheme of the invention is as follows: the conductor material comprises the following raw materials in parts by mass: 10-20 parts of carbon nano tubes and 20-30 parts of graphene.
The further technical scheme of the invention is as follows: the non-conductive layer is a glass fiber layer.
The further technical scheme of the invention is as follows: the adhesive is silica sol.
The further technical scheme of the invention is as follows: the supporting carrier layer is a glass fiber felt
The further technical scheme of the invention is as follows: the thickness of the glass fiber mat is 0.2-3 mm.
The invention also provides a preparation method of the conductive film for the lead-acid storage battery, which mainly comprises the following steps:
s1, preparing a conductive carrier: mixing and stirring the superfine glass fiber, the short fiber, the conductor material and the adhesive uniformly according to the parts by weight to form a paste;
s2, preparing a conductive layer: and coating the conductive carrier on two side surfaces of the glass fiber felt, and heating and drying at high temperature.
And S3, respectively adhering glass fibers to two side surfaces of the conductive layer, and firmly combining the conductive layer and the glass fibers on the two sides into a whole.
The further technical scheme of the invention is as follows: in S2, the conductive carrier is roll coated on the glass fiber mat by a roll press.
The further technical scheme of the invention is as follows: in the step S2, the high-temperature heating and drying are carried out at the temperature of 240-260 ℃ for 3-6 hours.
Compared with the prior art, the invention has the following characteristics:
1. the conductive film adopts three layers combined into an integral structure, namely the upper layer is a glass fiber layer, the middle layer is a conductive layer, and the lower layer is a glass fiber layer, so that the middle layer can be conductive, and the upper outer side and the lower outer side are non-conductive glass fibers which can absorb acid, thereby preventing the short circuit of the battery.
2. The invention can be placed at the bottom of the inner cavity of the battery shell and at the top of the inner cavity of the battery, and particularly has good conductive effect when the sulfuric acid has poor conductive capacity in a low-temperature environment, so that the conductive capacity of the storage battery can be improved, and the storage battery has excellent low-temperature performance.
The invention is further described below in terms of specific embodiments.
Detailed Description
Example 1
The conductive film for the lead-acid storage battery comprises a conductive layer and non-conductive layers positioned on two side faces of the conductive layer, wherein the conductive layer comprises a conductive carrier layer and a supporting carrier layer, the supporting carrier layer is a glass fiber felt with the thickness of 0.2-3mm, and the conductive carrier layer comprises the following raw materials in parts by mass: 20-30 parts of superfine glass fiber, 5-10 parts of short fiber, 5-10 parts of conductor material and 50-60 parts of adhesive; the conductor material preferably adopts the following raw materials in parts by mass: 10-20 parts of carbon nano tubes and 20-30 parts of graphene; the adhesive is preferably selected from silica sol. Uniformly stirring the raw materials (namely superfine glass fiber, short fiber, carbon nano tube, graphene and silica sol) of the conductive carrier layer according to the proportion to form a paste, and then coating the paste on the upper surface and the lower surface of a glass fiber felt with a certain thickness of 0.2-3mm by a rolling machine in a rolling way, so as to ensure good contact between the carbon nano tube and the graphene and ensure excellent conductive function; and then heating and drying at high temperature to obtain a conductive carrier layer of a material with certain strength and thickness, and covering two side surfaces of the conductive carrier layer with non-conductive layers, wherein the non-conductive layers are preferably made of glass fibers.
Thus, the conductive film for the lead-acid storage battery is mainly divided into three layers, namely, the upper layer and the lower layer are non-conductive glass fibers, the middle layer is a conductive layer containing carbon nanotube graphene film, and the three layers are combined into a whole, so that the conductive film becomes the glass fibers which can be conductive in the middle, non-conductive in the upper and lower outer sides and can adsorb acid liquor, and the short circuit of the battery can be prevented.
The conductive film for the lead-acid storage battery can be placed at the bottom of the inner cavity of the battery shell and also can be placed at the top of the inner cavity of the battery, so that the conductive capacity of the storage battery can be improved, and particularly, when the conductive capacity of sulfuric acid is poor in a low-temperature environment, the conductive film for the lead-acid storage battery can play a good role in conducting electricity, so that the storage battery has excellent low-temperature performance.
The invention also provides a preparation method of the conductive film for the lead-acid storage battery, which mainly comprises the following steps:
s1, firstly, preparing a conductive carrier: uniformly mixing and stirring 20-30 parts of superfine glass fiber, 5-10 parts of short fiber, 5-10 parts of conductor material and 50-60 parts of adhesive to form a paste; preferably, the conductor material is prepared from the following raw materials in parts by mass: 10-20 parts of carbon nano tubes and 20-30 parts of graphene; preferably, the adhesive is silica sol.
S2, preparing a conductive layer: and (3) coating the conductive carrier on two side surfaces of the glass fiber felt in a rolling way by using a conductive carrier rolling machine, drying for 3-6 hours at the temperature of 240-260 ℃, and drying the conductive layer. The muddy paste is coated on the glass fiber felt, so that good contact between the carbon nano tube and the graphene is ensured, the strength of the conductive carrier can be increased, and the conductive carrier has an excellent conductive function.
And S3, respectively adhering glass fibers to two side surfaces of the conductive layer, and firmly combining the conductive layer and the glass fibers on the two sides into a whole. The invention is a product which can conduct electricity in the middle, does not conduct electricity at the upper and lower outer sides, can adsorb acid liquor and can prevent the short circuit of the battery.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Claims (10)
1. A lead-acid storage battery conductive film is characterized in that: the conductive layer comprises a conductive carrier layer, and the conductive carrier layer comprises the following raw materials in parts by mass: 20-30 parts of superfine glass fiber, 5-10 parts of short fiber, 5-10 parts of conductor material and 50-60 parts of adhesive.
2. The conductive film for a lead-acid storage battery according to claim 1, characterized in that: the conductive layer further comprises a support carrier layer, and two side surfaces of the support carrier layer are coated with the conductive carrier layer respectively.
3. The conductive film for a lead-acid storage battery according to claim 1 or 2, characterized in that: the conductor material comprises the following raw materials in parts by mass: 10-20 parts of carbon nano tubes and 20-30 parts of graphene.
4. The conductive film for a lead-acid storage battery according to claim 1 or 2, characterized in that: the non-conductive layer is a glass fiber layer.
5. The conductive film for a lead-acid storage battery according to claim 1 or 2, characterized in that: the adhesive is silica sol.
6. The conductive film for a lead-acid storage battery according to claim 1 or 2, characterized in that: the supporting carrier layer is a glass fiber felt.
7. The conductive film for a lead-acid storage battery according to claim 6, characterized in that: the thickness of the glass fiber mat is 0.2-3 mm.
8. A preparation method of a conductive film for a lead-acid storage battery is characterized by comprising the following steps: the method mainly comprises the following steps:
s1, preparing a conductive carrier: mixing and stirring the superfine glass fiber, the short fiber, the conductor material and the adhesive uniformly according to the parts by weight to form a paste;
s2, preparing a conductive layer: coating a conductive carrier on two side surfaces of the glass fiber felt, and heating and drying at high temperature;
and S3, respectively adhering glass fibers to two side surfaces of the conductive layer, and firmly combining the conductive layer and the glass fibers on the two sides into a whole.
9. The method for preparing a conductive film for a lead-acid battery according to claim 8, wherein: in S2, the conductive carrier is roll coated on the glass fiber mat by a roll press.
10. The method for preparing a conductive film for a lead-acid battery according to claim 8, wherein: in the step S2, the high-temperature heating and drying are carried out at the temperature of 240-260 ℃ for 3-6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011574116.8A CN112582097A (en) | 2020-12-28 | 2020-12-28 | Conductive film for lead-acid storage battery and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011574116.8A CN112582097A (en) | 2020-12-28 | 2020-12-28 | Conductive film for lead-acid storage battery and preparation method thereof |
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| CN112582097A true CN112582097A (en) | 2021-03-30 |
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| CN202011574116.8A Pending CN112582097A (en) | 2020-12-28 | 2020-12-28 | Conductive film for lead-acid storage battery and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591055A (en) * | 2015-12-17 | 2016-05-18 | 中南大学 | High-multiplying power lithium ion battery and preparation method thereof |
| CN106257722A (en) * | 2016-08-31 | 2016-12-28 | 骆驼集团华中蓄电池有限公司 | A kind of accumulator anode board and manufacture method thereof |
| US20180219257A1 (en) * | 2017-01-25 | 2018-08-02 | Industrial Technology Research Institute | Aluminum-ion battery |
| CN109148799A (en) * | 2018-09-20 | 2019-01-04 | 深圳市瑞达电源有限公司 | A kind of battery, battery separator and production method |
| CN208538497U (en) * | 2018-06-28 | 2019-02-22 | 江苏远航精密合金科技股份有限公司 | A kind of new-energy automobile dynamic power system connection conductor material |
-
2020
- 2020-12-28 CN CN202011574116.8A patent/CN112582097A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591055A (en) * | 2015-12-17 | 2016-05-18 | 中南大学 | High-multiplying power lithium ion battery and preparation method thereof |
| CN106257722A (en) * | 2016-08-31 | 2016-12-28 | 骆驼集团华中蓄电池有限公司 | A kind of accumulator anode board and manufacture method thereof |
| US20180219257A1 (en) * | 2017-01-25 | 2018-08-02 | Industrial Technology Research Institute | Aluminum-ion battery |
| CN208538497U (en) * | 2018-06-28 | 2019-02-22 | 江苏远航精密合金科技股份有限公司 | A kind of new-energy automobile dynamic power system connection conductor material |
| CN109148799A (en) * | 2018-09-20 | 2019-01-04 | 深圳市瑞达电源有限公司 | A kind of battery, battery separator and production method |
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Application publication date: 20210330 |