CN113964449A - Glass fiber partition board for improving power performance of lead-acid storage battery and forming method - Google Patents
Glass fiber partition board for improving power performance of lead-acid storage battery and forming method Download PDFInfo
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 175
- 239000002253 acid Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003860 storage Methods 0.000 title claims abstract description 20
- 238000005192 partition Methods 0.000 title claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims description 16
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000003111 delayed effect Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000013543 active substance Substances 0.000 abstract description 2
- 230000010287 polarization Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 14
- 238000001035 drying Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/443—Particulate material
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
- H01M50/434—Ceramics
- H01M50/437—Glass
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/673—Containers for storing liquids; Delivery conduits therefor
- H01M50/682—Containers for storing liquids; Delivery conduits therefor accommodated in battery or cell casings
-
- 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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- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Cell Separators (AREA)
Abstract
The invention relates to the technical field of lead-acid storage batteries, in particular to a glass fiber separator for improving the power performance of a lead-acid storage battery and a forming method thereof. A glass fiber separator for improving the power performance of a lead acid battery, comprising: glass fibers of different diameters forming a layered structure, the average pore size of the different glass fiber layers being different. The partition board manufactured by the invention has more fine glass fibers on one surface and smaller aperture, and has more coarse glass fibers on the other surface and larger aperture. This property determines the phenomenon of "capillary contention" for acid inside the separator, which is stronger if the pore size is small. When the battery is manufactured, the side with small aperture is attached to the polar plate, and the aperture of the plate is smaller. During discharging, acid needs to be continuously supplied to the active substance of the polar plate for reaction, the pore diameter gradient is formed, the acid is transferred more smoothly and timely, the voltage drop caused by concentration polarization between the polar plate and the clapboard due to the participation of the acid in the reaction is delayed, the discharging time is prolonged, and the power performance is improved.
Description
Technical Field
The invention relates to the technical field of lead-acid storage batteries, in particular to a glass fiber separator for improving the power performance of a lead-acid storage battery and a forming method thereof.
Background
Data centers and other systems with high requirements for power stability have shorter and shorter requirements for backup battery power-supply time and higher requirements for battery power, so that storage battery manufacturers are required to improve the battery power performance in a limited battery internal space. For lead storage batteries, which are often used as backup power sources, the acid supply capacity of the separator has a significant impact on the battery power performance.
The separators for lead-acid batteries are mostly made of ultrafine glass fibers (AGM), and the AGM glass fiber separators serve to adsorb electrolyte in the lead-acid batteries, make ions between electrodes flow, are easily wetted by sulfuric acid, and have excellent corrosion resistance. The AGM glass fiber separator is manufactured by adopting superfine glass fibers as raw materials, adopting a wet papermaking process (similar to a papermaking process), uniformly dispersing the fibers in water by adjusting the pH value to be 2.0-3.5, performing dehydration forming by using an inclined wire former and a vacuum pump, and drying, wherein the porosity and the pore size of the manufactured glass fiber separator in the thickness are uniform.
Disclosure of Invention
The inventor finds that when the conventional separator is formed, the pore diameters of the upper layer and the lower layer of the separator are not purposefully controlled, so that the pore diameters of the upper layer and the lower layer of the separator are not greatly different, and the acid solution retention capacity is not different. The battery needs the separator to supply acid to the polar plate in time when discharging, and the existing separator has no distinct acid-preserving capability, is not beneficial to supplying acid in time, and does not improve the power performance of the battery.
Therefore, the separators with different apertures of the upper layer and the lower layer are manufactured by controlling the fiber distribution of the upper layer and the lower layer during the formation of the separators, so that different acid absorption capacities of different surfaces of the separators are realized; when the separator wraps the polar plate, the surface with strong acid absorption capacity faces the polar plate, so that the acid supply capacity of the separator during battery discharge is improved.
In a first aspect, the present invention provides a glass fiber separator for improving the power performance of a lead acid battery.
A glass fiber separator for improving the power performance of a lead acid battery, comprising: glass fibers of different diameters forming a layered structure, the average pore size of the different glass fiber layers being different.
In a further improvement, the glass fibers with different diameters are two types, one type is relatively large in diameter and is called coarse glass fiber, and the other type is relatively small in diameter and is called fine glass fiber;
the coarse glass fibers form a coarse glass fiber layer, the fine glass fibers form a fine glass fiber layer, and the coarse glass fiber layer and the fine glass fiber layer are layered along the thickness of the glass fiber separator; the average pore size of the coarse glass fiber layer is larger than that of the fine glass fiber layer.
The glass fiber separator has different acid absorption capacities on different surfaces, so that the surface with strong acid absorption capacity faces the polar plate when the separator wraps the polar plate, the acid supply capacity of the separator during battery discharge can be improved, and the power performance of the battery can be improved.
Preferably, the ratio of the components of the fine glass fiber to the coarse glass fiber is as follows: the proportion of the fine glass fiber is 40-60%, and the proportion of the coarse glass fiber is 60-40%.
Preferably, the pore size of the fine glass fiber layer is 10 to 15 μm, and the pore size of the coarse glass fiber layer is 15 to 25 μm.
In a second aspect, the invention provides a method for forming a glass fiber separator for improving the power performance of a lead-acid battery.
A method for forming a glass fiber separator for improving the power performance of a lead-acid storage battery adopts superfine glass fibers as raw materials, and the superfine glass fibers are dewatered and formed by a vacuum pump through an inclined wire former after size mixing.
Preferably, in the step of dehydrating with a vacuum pump, the degree of vacuum is controlled to be 0.5MPa to 0.9 MPa.
Preferably, the microglass fibers have two different diameters, one with a relatively large diameter called coarse glass fibers and the other with a relatively small diameter called fine glass fibers;
and applying vibration to the material layer to enable the coarse glass fibers to form a coarse glass fiber layer, and the fine glass fibers to form a fine glass fiber layer, wherein the average pore diameter of the coarse glass fiber layer is larger than that of the fine glass fiber layer.
The glass fiber separator manufactured by the molding mode has different acid absorption capacities on different surfaces, and the surface with strong acid absorption capacity faces the polar plate when the separator wraps the polar plate, so that the acid supply capacity of the separator during battery discharge can be improved, and the power performance of the battery can be improved.
Preferably, the fine glass fiber accounts for 40-60% of the total weight of the glass fiber, and the coarse glass fiber accounts for 60-40% of the total weight of the glass fiber;
and applying vibration to the material layer to ensure that the pore size of the fine glass fiber layer is 10-15 mu m and the pore size of the coarse glass fiber layer is 15-25 mu m.
A third aspect of the invention provides a lead-acid battery comprising a glass fiber separator as described above for improving the power performance of a lead-acid battery. The two sides of the polar plate of the lead-acid storage battery are wrapped by the glass fiber partition plates, wherein the glass fiber layers with relatively small aperture of the glass fiber partition plates are attached to the plate surface of the polar plate of the lead-acid storage battery. When the battery is manufactured, the side with the small aperture is attached to the polar plate (the aperture of the polar plate is smaller), so that acid can be better supplied to the polar plate, voltage reduction caused by specific gravity reduction is delayed, the discharging time is prolonged, and the power performance is improved.
Compared with the prior art, the invention has the beneficial effects that:
(1) the glass fiber separator provided by the invention has different acid absorption capacities on different surfaces, and the surface with strong acid absorption capacity faces the polar plate when the separator wraps the polar plate, so that the acid supply capacity of the separator during battery discharge can be improved, and the power performance of the battery can be improved.
(2) The invention adopts the forming method of the glass fiber separator, so that one surface of the glass fiber separator has more fine glass fibers and smaller aperture, and the other surface of the glass fiber separator has more coarse glass fibers and larger aperture. This property determines the phenomenon of "capillary contention" for acid inside the separator, which is stronger if the pore size is small. When the battery is manufactured, the side with the small aperture is attached to the polar plate (the aperture of the polar plate is smaller), so that acid can be better supplied to the polar plate, voltage drop caused by specific gravity drop is delayed, the discharging time is prolonged, and the power performance is improved.
(3) The power performance of the battery can be improved only by improving the internal structure of the glass fiber separator, and the occupation of the external space of the battery is not increased.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application, and in which:
FIG. 1 is a schematic structural view of a glass fiber separator for improving power performance of a lead-acid battery according to example 1 of the present invention;
FIG. 2 is a process flow diagram of a method of forming a glass fiber separator for improving the power performance of a lead acid battery in accordance with example 2 of the present invention;
fig. 3 is a schematic diagram of a lead-acid battery provided in embodiment 3 of the present invention after the electrode plates are wrapped.
In the figure, the position of the upper end of the main shaft,
1. a coarse glass fiber layer;
2. a fine glass fiber layer;
3. coarse glass fibers;
4. fine glass fibers;
5. and (4) a polar plate.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
The AGM glass fiber separator is manufactured by adopting superfine glass fibers as raw materials, adopting a wet papermaking process (similar to a papermaking process), uniformly dispersing the fibers in water by adjusting the pH value to be 2.0-3.5, passing through an inclined wire former, dehydrating and forming by using a vacuum pump, and then drying, wherein the porosity and the pore size of the manufactured glass fiber separator in the thickness are uniform. However, when the existing separator is formed, the pore diameters of the upper layer and the lower layer of the separator are not controlled, so that the pore diameters of the upper layer and the lower layer of the separator are not greatly different, and the acid solution retention capacity is not different. The battery needs the separator to supply acid to the polar plate in time when discharging, and the existing separator has no distinct acid-preserving capability, is not beneficial to supplying acid in time, and does not improve the power performance of the battery.
Therefore, the different acid absorption capacities of different surfaces of the separator are realized through the following embodiments; when the separator wraps the polar plate, the surface with strong acid absorption capacity faces the polar plate, so that the acid supply capacity of the separator during battery discharge is improved.
Example 1
The first embodiment of the invention provides a glass fiber separator for improving the power performance of a lead-acid storage battery, wherein glass fibers with different diameters form a layered structure, and the average pore sizes of different glass fiber layers are different.
As shown in fig. 1, there are two types of glass fibers with different diameters, one having a relatively large diameter and called a coarse glass fiber, and the other having a relatively small diameter and called a fine glass fiber. Wherein the fine glass fiber and the coarse glass fiber comprise the following components in percentage by weight: the proportion of the fine glass fiber is 40-60%, and the proportion of the coarse glass fiber is 60-40%.
The coarse glass fiber 3 and the pore form a coarse glass fiber layer 1, the fine glass fiber 4 and the pore form a fine glass fiber layer 2, and the coarse glass fiber layer 1 and the fine glass fiber layer 2 are layered on the glass fiber separator along the thickness; the average pore size of the coarse glass fiber layer is larger than that of the fine glass fiber layer. The pore size of the fine glass fiber layer is 10-15 mu m, and the pore size of the coarse glass fiber layer is 15-25 mu m.
The glass fiber separator has different acid absorption capacities on different surfaces, so that the surface with strong acid absorption capacity faces the polar plate when the separator wraps the polar plate, the acid supply capacity of the separator during battery discharge can be improved, and the power performance of the battery can be improved.
Example 2
A second embodiment of the present invention provides a method for forming a glass fiber separator (AGM) for improving the power performance of a lead-acid battery, as shown in fig. 2, comprising the steps of:
pulping: adding prepared raw materials such as glass fiber, synthetic fiber and the like according to the AGM design formula sequence: a (20-30%), B (30-40%), C (10-20%), D (5-10%), E (5-10%) and water are uniformly stirred, and acid is added to adjust the system balance. (A, B is fine glass fiber with different diameters, B diameter is larger than A diameter, C, D, E is coarse glass fiber with different diameters, and the diameters are increased in sequence).
A molding procedure: and adjusting the speed, vibration frequency, dehydration efficiency and temperature of the machine to enable the wet AGM to be well formed on the mesh cloth.
And (3) drying: AGM is conveyed into a drying system, and the drying temperature in the system is strictly controlled, so that the effect of rapid dehydration is achieved.
A curling and slitting process: after drying, the AGM is rolled and the width required by a customer is obtained through online slitting.
AGM test detection
The AGM separator finished product was tested for thickness, basis weight, tensile strength, and pore size at different levels as shown in the following table.
The embodiment provides a method for forming a glass fiber separator for improving the power performance of a lead-acid storage battery, wherein a vibration process is added during forming to realize primary layering of fine glass fibers and coarse glass fibers, and then the fine glass fibers are further separated from the coarse glass fibers by controlling the vacuum degree (0.5 MPa-0.9 MPa) to form a separator with two surfaces with different apertures, wherein the aperture of the small surface is 10 mu m-15 mu m, and the aperture of the large surface is 15 mu m-25 mu m.
The glass fiber separator manufactured by the molding mode has different acid absorption capacities on different surfaces, and the surface with strong acid absorption capacity faces the polar plate when the separator wraps the polar plate, so that the acid supply capacity of the separator during battery discharge can be improved, and the power performance of the battery can be improved.
The vibrating device additionally arranged on the inclined wire former can be in contact with the inclined wire by adopting the existing vibrator, such as a cam type, a crank block type or an electromagnetic type. The electromagnetic vibrator is preferably selected, so that the vibration frequency is high, the controllability is high, and the occupied space is small.
Example 3
A lead-acid storage battery comprises the glass fiber separator for improving the power performance of the lead-acid storage battery in embodiment 1 or 2, wherein the glass fiber separator is enveloped on both sides of a polar plate of the lead-acid storage battery, and a glass fiber layer with relatively small aperture of the glass fiber separator is attached to the plate surface of the polar plate of the lead-acid storage battery.
As shown in fig. 3, in the manufacture of the battery, the fine glass fiber layer 2 (i.e., the side having a small separator aperture) was attached to the plate 5, and the coarse glass fiber layer 1 (i.e., the side having a large separator aperture) was relatively distant from the plate 5.
The side (namely the thin glass fiber layer 2) with the small aperture of the separator is attached to the polar plate 5, so that the aperture of the polar plate is smaller, acid can be better supplied to the polar plate, and the voltage drop caused by the specific gravity drop is delayed, thereby prolonging the discharge time and improving the power performance.
Comparative tests were conducted on the glass fiber separators manufactured by the method of this example and glass fiber separators manufactured by a conventional method. The rated power discharge time of the battery is prolonged from the original 16min15s to 18min05s, and the power performance is obviously improved.
The glass fiber separator manufactured by the embodiment can improve the cause analysis of the power performance of the battery.
The baffle that this embodiment was made, the fine glass fiber of one side is more, and the aperture is less, and the coarse glass fiber of another side is more, and the aperture is great. This property determines the phenomenon of "capillary contention" for acid inside the separator, which is stronger if the pore size is small. When the battery is manufactured, the side with small aperture is attached to the polar plate (the aperture of the polar plate is smaller) to form aperture gradient (the polar plate is minimum, the thin glass fiber layer is the next to the thick glass fiber layer is the largest), acid is required to be continuously supplied to the polar plate active substance for reaction during discharging, the aperture gradient is formed, the acid is more smoothly and timely transferred, the voltage reduction caused by concentration polarization between the polar plate and the partition plate due to the fact that the acid participates in the reaction is delayed, the discharging time is prolonged, and the power performance is improved.
By further explanation, the existing normal non-laminated glass fiber separator has uniform pore size and does not have the driving force for causing liquid or ion flow. When the glass fiber separator is combined with the electrode to generate reaction, the concentration of ions close to the electrode is reduced, concentration difference is generated, and ion diffusion is promoted. The present example provides a layered glass fiber separator with a finer glass fiber layer having smaller pores. Inside the separator, the fine glass fiber layer produces capillary effect or siphon effect on the coarse glass fiber layer, and combines with the diffusion effect produced by concentration gradient to raise the acid supply level to the polar plate, raise the discharge time and raise the power performance.
It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
While the foregoing description shows and describes several preferred embodiments of this invention, it is to be understood, as noted above, that this invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments,
but is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A glass fiber separator for improving the power performance of a lead acid battery, comprising: glass fibers of different diameters forming a layered structure, the average pore size of the different glass fiber layers being different.
2. The glass fiber separator for improving the power performance of a lead acid battery as claimed in claim 1, wherein there are two types of said glass fibers with different diameters, one type with a relatively large diameter called coarse glass fiber and the other type with a relatively small diameter called fine glass fiber;
the coarse glass fibers form a coarse glass fiber layer, the fine glass fibers form a fine glass fiber layer, and the coarse glass fiber layer and the fine glass fiber layer are layered along the thickness of the glass fiber separator;
the average pore size of the coarse glass fiber layer is larger than that of the fine glass fiber layer.
3. The glass fiber separator for improving the power performance of a lead-acid battery as claimed in claim 2, wherein the ratio of the components of the fine glass fibers to the coarse glass fibers is: the proportion of the fine glass fiber is 40-60%, and the proportion of the coarse glass fiber is 60-40%.
4. The glass fiber separator for improving the power performance of a lead-acid battery as claimed in claim 3, wherein the pore size of the fine glass fiber layer is 10 μm to 15 μm, and the pore size of the coarse glass fiber layer is 15 μm to 25 μm.
5. A method for forming a glass fiber separator for improving the power performance of a lead-acid storage battery adopts superfine glass fibers as raw materials, and the superfine glass fibers are dewatered and formed by a vacuum pump through an inclined wire former after size mixing.
6. The method of claim 5, wherein the step of forming the glass fiber separator for improving the power performance of the lead-acid battery comprises: in the step of dehydration by a vacuum pump, the vacuum degree is controlled between 0.5MPa and 0.9 MPa.
7. The method of claim 6, wherein the step of forming the glass fiber separator for improving the power performance of a lead-acid battery,
the superfine glass fibers have two different diameters, one diameter is relatively large and is called as thick glass fiber, and the other diameter is relatively small and is called as thin glass fiber;
and applying vibration to the material layer to enable the coarse glass fibers to form a coarse glass fiber layer, and the fine glass fibers to form a fine glass fiber layer, wherein the average pore diameter of the coarse glass fiber layer is larger than that of the fine glass fiber layer.
8. The method for forming a glass fiber separator for improving the power performance of a lead-acid battery as claimed in claim 7, wherein the fine glass fiber accounts for 40-60% and the coarse glass fiber accounts for 60-40%;
and applying vibration to the material layer to ensure that the pore size of the fine glass fiber layer is 10-15 mu m and the pore size of the coarse glass fiber layer is 15-25 mu m.
9. A lead-acid battery comprising the glass fiber separator for improving power performance of a lead-acid battery according to any one of claims 1 to 4, or the glass fiber separator produced by the molding method according to any one of claims 5 to 8;
the two sides of the polar plate of the lead-acid storage battery are wrapped by the glass fiber partition plates, wherein the glass fiber layers with relatively small aperture of the glass fiber partition plates are attached to the plate surface of the polar plate of the lead-acid storage battery.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114843699A (en) * | 2022-04-08 | 2022-08-02 | 沁阳市立标滤膜有限公司 | Production process of composite AGM partition plate and composite forming machine |
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