CN210073999U - AGM separator, manufacturing equipment and storage battery - Google Patents
AGM separator, manufacturing equipment and storage battery Download PDFInfo
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- CN210073999U CN210073999U CN201920837236.9U CN201920837236U CN210073999U CN 210073999 U CN210073999 U CN 210073999U CN 201920837236 U CN201920837236 U CN 201920837236U CN 210073999 U CN210073999 U CN 210073999U
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to the field of batteries, and provides an AGM separator, a manufacturing device and a storage battery, wherein the AGM separator comprises a body, the body comprises a contact middle part contacted with a polar plate surface and a non-contact side part not contacted with the polar plate surface; the thickness of the contact middle part is larger than that of the non-contact side part; the contact center portion may be compressed. The utility model discloses in, the battery is when the assembly, cuts off through the AGM baffle between positive plate and the negative plate, prevents that positive negative pole contact from leading to the short circuit, and the AGM baffle can receive pressure and compress with the part of polar plate contact after the assembly, can reduce the volume of battery after the equipment, increases the range of application of battery.
Description
Technical Field
The utility model belongs to the battery field relates to a battery, in particular to AGM baffle, preparation equipment and battery.
Background
The thickness of the battery separator in the free state is greater than the thickness of the battery in the assembled state because the separator is subjected to a pressure of 45kPa to 90kPa after assembly. The area of the separator of the storage battery is larger than that of the polar plate, and the width of the separator is 10-14 mm larger than that of the polar plate according to the actual size of each battery, so that the short circuit caused by the contact of the positive electrode and the negative electrode when the polar plates are dislocated is prevented, the electrolyte absorbed by the separator which is wider than the polar plate part has no practical significance on the chemical reaction of the battery, and the thinner the battery is, the more beneficial the battery is.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an AGM baffle, preparation equipment and battery to the above-mentioned problem that exists among the prior art.
The purpose of the utility model can be realized by the following technical proposal: an AGM separator comprises a body, wherein the body comprises a contact middle part in contact with a polar plate surface and a non-contact side part not in contact with the polar plate surface; the thickness of the contact middle part is greater than that of the non-contact side part; the contact center portion may be compressed.
The utility model discloses a theory of operation: when the storage battery is assembled, the positive plate and the negative plate are separated through the AGM partition plate, short circuit caused by contact of the positive plate and the negative plate is prevented, the assembled AGM partition plate and the part, in contact with the positive plate, of the electrode plate can be compressed under the action of pressure, the size of the assembled storage battery can be reduced, and only the partition plate in contact with the surface of the electrode plate is under the action of the pressure, so that the thickness of the partition plate in the part, in non-contact with the surface of the electrode plate.
Preferably, the area of the contact middle part is matched with the surface of the pole plate.
Preferably, the separator may be bent into a U-shape to enclose the plates in the separator.
Preferably, the width of the separator is 10-14 mm larger than that of the polar plate; the area of the separator of the storage battery is larger than that of the polar plate, and the width of the separator is 10-14 mm larger than that of the polar plate according to the actual size of each battery, so that the short circuit caused by the contact of the positive electrode and the negative electrode when the polar plates are dislocated is prevented, the electrolyte absorbed by the separator which is wider than the polar plate part has no practical significance on the chemical reaction of the battery, and the thinner the battery is, the more beneficial the battery is. The height of the separator is 5-8 mm greater than that of the polar plate, the separator higher than the polar plate part cannot be compressed after being assembled with the battery, electrolyte absorbed by the separator can naturally fall to the polar plate due to the action of gravity during discharging, discharging of the battery is facilitated, and the electrolyte generated can be vertically absorbed upwards due to capillary phenomenon during charging. After the storage battery is assembled, the difference between the thickness of the middle part of the contact part and the thickness of the side part of the contact part is not more than 2mm, so that the thickness of the middle part of the contact part and the thickness of the side part of the contact part are kept consistent as much as possible, the effect of blocking can be achieved, and the safety performance of the storage battery can be guaranteed.
Preferably, the thickness of the contact middle part is the same as that of the non-contact side part, so that the separator can achieve the barrier effect to the maximum extent and ensure the safety performance of the battery.
Preferably, the cross section of the partition board is in a step shape with a high middle and two low sides. According to the assembling pressure of the battery and the compression ratio of the separator, the section of the separator is designed into a step shape, the part in contact with the plate surface is of normal design thickness, and the thickness of the side part not in contact with the plate surface is reduced according to different assembling pressures.
A method for manufacturing an AGM separator comprises the following steps:
s1, adding short glass fiber into the reactor;
s2, adding polyester staple fibers in an amount of 0.2-0.7% by weight of the partition board; the preparation method of the polyester staple fiber auxiliary material comprises the steps of taking a sulfuric acid solution with the pH value of 2.5-2.8, putting the polyethylene staple fibers into the sulfuric acid solution according to the proportion of 1.0-1.5 g/L, and stirring the mixture at the constant temperature of 36 +/-3 ℃ until the fibers are completely dispersed;
s3, adding polyethylene short fibers in an amount of 0.2-0.5% by weight of the partition board; the preparation method of the polyethylene short fiber auxiliary material comprises the steps of taking a sulfuric acid solution with the pH value of 3-3.5, putting the polyester short fibers into the sulfuric acid solution according to the proportion of 1.2-1.8 g/L, and stirring the mixture at the constant temperature of 30 +/-3 ℃ until the fibers are completely dispersed;
s4, starting the reactor, stirring glass fibers, adding the polyethylene short fiber sulfuric acid solution into the reactor at the speed of 10-15 g/S, stirring, adding the polyester short fiber sulfuric acid solution into the reactor at the speed of 12-20 g/S, and stirring to obtain a partition plate slurry;
s5, manufacturing the partition board by adopting a papermaking wet forming process, and forming the sheet-shaped partition board after dehydrating and forming the partition board slurry;
s6, rolling the two ends of the sheet-shaped partition plate in the step S5 by adopting stepped rollers to ensure that the thickness of the two ends of the sheet-shaped partition plate is smaller than that of the middle part;
and S7, drying and cutting the product obtained in the step S6 to obtain the AGM separator.
Preferably, polyester staple fibers are added to increase the separator resiliency at 0.5% by weight of the separator.
Preferably, polyethylene staple fibers are added to increase separator strength and corrosion resistance at 0.4% by weight of the separator.
Preferably, the drying mode of the partition board is divided into two stages of rapid surface drying and constant temperature aging.
Preferably, the method further comprises a step S8 of bending the cut AGM separator into a U shape, wherein the middle part of the U shape is used for containing the polar plate.
The utility model provides a preparation equipment of AGM baffle, includes the frame and sets up the thick liquid pond in frame one end, be equipped with the conveying net that is used for conveying the baffle in the frame, still be equipped with the support in the frame, be equipped with cascaded running roller on the support, cascaded running roller is used for the both sides of extrusion baffle, makes the baffle form the echelonment that high both ends are low in the middle of the high.
Preferably, the bracket is further provided with an adjusting device, and the adjusting device is used for adjusting the height of the stepped extrusion roller so as to adjust the thickness of two sides of the partition board.
Preferably, the adjustment means is a screw.
A storage battery comprises a box body, wherein a plurality of battery units are arranged in the box body, each battery unit comprises a positive plate, a negative plate and a separator, the separator is used for separating the positive plate from the negative plate, the area of the separator is larger than that of the plate, the separator comprises a contact middle part which is in contact with the surface of the plate and a non-contact side part which is not in contact with the surface of the plate, and the thickness of the contact middle part is larger than that of the non-contact side part; after the battery unit is assembled in the box body, the pole plate is arranged in the middle of the contact and compresses the middle of the contact, and the thickness difference between the compressed middle of the contact and the non-contact side part is not more than 2 mm.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model discloses in, the battery is when the assembly, cuts off through the AGM baffle between positive plate and the negative plate, prevents that positive negative pole contact from leading to the short circuit, and the AGM baffle can receive pressure and compress with the part of polar plate contact after the assembly, can reduce the volume of battery after the equipment, increases the range of application of battery.
Drawings
FIG. 1 is a schematic view of the structure of an AGM separator;
FIG. 2 is a schematic view of a separator and plate prior to assembly of the battery;
FIG. 3 is a schematic view of a separator and plate after assembly of the battery;
FIG. 4 is a schematic illustration of separator production;
FIG. 5 is a schematic view of a stepped roller pressing both sides of a separator;
in the figure, 1, a partition plate; 2. a polar plate; 3. contacting the middle portion; 4. a non-contact side portion; 5. a pulp tank; 6. a stepped roller; 7. and (4) an adjusting device.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
As shown in the figures, an AGM separator 1 comprises a body comprising a contact middle portion 3 in surface contact with a plate 2 and a non-contact side portion 4 not in surface contact with the plate 2; the thickness of the contact central portion 3 is greater than that of the non-contact side portions 4; the contact intermediate portion 3 can be compressed. When the storage battery is assembled, the positive plate 2 and the negative plate 2 are separated through the AGM separator 1, short circuit caused by contact of the positive and negative electrodes is prevented, the contact part of the AGM separator 1 and the plate 2 can be compressed by pressure after assembly, the size of the assembled battery can be reduced, only the separator 1 in contact with the surface of the plate 2 is under the action of the pressure, and therefore the thickness of the separator 1 in the non-contact part with the surface of the plate 2 cannot be changed along with the assembly of the battery.
The area of the contact middle part 3 is matched with the surface of the polar plate 2. The separator 1 may be bent in a U-shape to enclose the electrode plate 2 in the separator 1. The width of the clapboard 1 is 10 mm-14 mm larger than that of the polar plate 2; the area of the storage battery separator 1 is larger than that of the polar plate 2, and the width of the separator 1 is 10-14 mm larger than that of the polar plate 2 according to the actual size of each battery, so that the purpose is to prevent the polar plate 2 from being easily in contact with the positive and negative electrodes when in dislocation to cause short circuit, the electrolyte absorbed by the separator 1 which is wider than the polar plate 2 has no practical significance on the chemical reaction of the battery, and the thinner the battery is, the more beneficial the battery is. The height of the separator 1 is 5 mm-8 mm greater than that of the polar plate 2, the separator 1 which is higher than the polar plate 2 cannot be compressed after being assembled with a battery, electrolyte absorbed by the separator 1 naturally falls to the polar plate 2 under the action of gravity when discharging, the battery discharging is facilitated, and the electrolyte generated by the capillary phenomenon is vertically absorbed upwards during charging. After the storage battery is assembled, the difference between the thickness of the contact middle part 3 and the thickness of the non-contact side part 4 is not more than 2mm, the thickness of the contact middle part 3 is kept consistent with the thickness of the non-contact side part 4 as far as possible, the effect of blocking can be achieved, and the safety performance of the storage battery can be guaranteed. Optimally, the thickness of the contact middle part 3 is the same as that of the non-contact side part 4, so that the separator 1 can achieve the function of separation and ensure the safety performance of the battery to the maximum extent. The cross section of the baffle plate 1 is in a step shape with a high middle and two low sides. According to the assembling pressure of the battery and the compression ratio of the separator 1, the section of the separator 1 is designed into a step shape, the part in contact with the surface of the polar plate 2 is in normal design thickness, and the thickness of the side part not in contact with the surface of the polar plate 2 is reduced according to different assembling pressures.
A method of making an AGM separator 1 comprising the steps of:
s1, adding short glass fiber into the reactor;
s2, adding polyester staple fiber in an amount which is 0.5 percent of the weight of the partition board 1; the preparation method of the polyester staple fiber auxiliary material comprises the steps of taking a sulfuric acid solution with the pH value of 2.5-2.8, putting the polyethylene staple fibers into the sulfuric acid solution according to the proportion of 1.2g/L, stirring the polyethylene staple fibers at the constant temperature of 36 +/-3 ℃ and the rotating speed of 120r/min until the fibers are completely dispersed for about 5min40 s-6 min, standing the mixture for 2min, and pouring the mixture into a reactor, wherein the reactor can be a slurry pool 5;
s3, adding polyethylene short fibers accounting for 0.4 percent of the weight of the separator 1; the preparation method of the polyethylene short fiber auxiliary material comprises the steps of taking a sulfuric acid solution with the pH value of 3-3.5, putting the polyester short fibers into the sulfuric acid solution according to the proportion of 1.5g/L, stirring the polyester short fibers at the constant temperature of 30 +/-3 ℃ and the rotating speed of 120r/min until the fibers are completely dispersed (about 3min20 s-3 min40s), standing the mixture for 2min, and pouring the mixture into a reactor, wherein the reactor can be a slurry tank 5;
s4, starting the reactor, stirring for 10min, adding the polyethylene short fiber sulfuric acid solution into the pulping barrel at the speed of 12g/S, continuously stirring for 10min, adding the polyester short fiber sulfuric acid solution into the reactor at the speed of 15g/S, and continuously stirring until the reaction is finished to obtain the slurry of the partition plate 1;
s5, manufacturing the partition board 1 by adopting a papermaking wet forming process, and forming the sheet-shaped partition board 1 after dehydrating and forming slurry of the partition board 1;
s6, rolling the two ends of the sheet-shaped partition board 1 in the step S5 by adopting a stepped roller 6, so that the thickness of the two ends of the sheet-shaped partition board 1 is smaller than that of the middle part; the forming mode of the partition board 1 is an extrusion type, the roller is designed into a step type roller, and the thickness of the partition board 1 changes along with the change of the gap between the roller and the conveyor belt;
s7, drying and cutting the product obtained in the step S6 to obtain an AGM separator 1; the drying mode of the clapboard 1 is divided into two stages of rapid surface drying and constant temperature aging, wherein the rapid surface drying step 1 is to dry the clapboard 1 in a drying kiln for 30min at 120-140 ℃, and the water content can be controlled to be below 0.5%; 2. the main purpose of the constant temperature aging is to further stabilize the silicate in the separator 1, and since the silicate component in the separator 1 after surface drying is still in an unstable state, segregation of chemical substances occurs due to a large temperature difference after the separator 1 is shifted to a normal temperature state, and the separator 1 has defects of uneven components and the like. The constant temperature aging is to transfer the clapboard 1 with the rapid surface drying effect into a constant temperature room with the temperature of 40 +/-2 ℃ for 6-8 h, take out the clapboard and place the clapboard in the normal temperature environment for 1h for standby.
And S8, bending the cut AGM partition board 1 into a U shape, wherein the middle part of the U shape is used for containing the pole plate 2.
The utility model provides a preparation equipment of AGM baffle 1, includes the frame and sets up the thick liquid pond 5 in frame one end, is equipped with the conveying net that is used for conveying baffle 1 in the frame, still is equipped with the support in the frame, is equipped with cascaded running roller 6 on the support, and cascaded running roller 6 is used for extrudeing the both sides of baffle 1, makes baffle 1 form the echelonment that high both ends are low in the middle of the height. And the support is also provided with an adjusting device 7, and the adjusting device 7 is used for adjusting the height of the stepped extrusion roller so as to adjust the thickness of two sides of the partition board 1. The adjusting means 7 is a screw.
A storage battery comprises a box body, wherein a plurality of battery units are arranged in the box body, each battery unit comprises a positive plate 2, a negative plate 2 and a partition plate 1, the partition plate 1 is used for separating the positive plate 2 from the negative plate 2, the area of the partition plate 1 is larger than that of the plate 2, the partition plate 1 comprises a contact middle part 3 in surface contact with the plate 2 and a non-contact side part 4 not in surface contact with the plate 2, and the thickness of the contact middle part 3 is larger than that of the non-contact side part 4; after the battery unit is assembled in the box body, the pole plate 2 is arranged in the contact middle part 3 and compresses the contact middle part 3, and the thickness difference between the compressed contact middle part 3 and the non-contact side part 4 is not more than 2 mm.
The performance of the separator 1 with the total thickness of the polyester staple fibers and the polyethylene staple fibers increased to 1.2mm is as follows:
appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. AGM separator, characterized in that it comprises a body comprising a contact middle part (3) in surface contact with a polar plate (2) and a non-contact side part (4) not in surface contact with the polar plate (2); the thickness of the contact middle part (3) is larger than that of the non-contact side part (4); the contact mid-portion (3) can be compressed.
2. AGM separator according to claim 1, wherein the area of the contact intermediate part (3) matches the area of the plate (2).
3. AGM separator according to claim 1, wherein the separator (1) is bendable in a U-shape enclosing the plates (2) in the separator (1).
4. AGM separator according to claim 1, wherein the width of the separator (1) is 10mm to 14mm greater than the width of the plate (2); the height of the clapboard (1) is 5 mm-8 mm greater than that of the polar plate (2); after the accumulator is assembled, the difference between the thickness of the contact middle part (3) and the thickness of the non-contact side part (4) is not more than 2 mm.
5. AGM separator according to claim 1, wherein the cross-section of the separator (1) is stepped with a high middle and two low sides.
6. The utility model provides a preparation equipment of AGM baffle, its characterized in that includes the frame and sets up thick liquid pond (5) in frame one end, be equipped with the conveying net that is used for conveying baffle (1) in the frame, still be equipped with the support in the frame, be equipped with cascaded running roller (6) on the support, cascaded running roller (6) are used for the both sides of extrusion baffle (1), make baffle (1) form the echelonment that the high both ends are low in the middle of the formation.
7. The AGM separator manufacturing equipment according to claim 6, wherein the support is further provided with an adjusting device (7), and the adjusting device (7) is used for adjusting the height of the stepped extrusion roller so as to adjust the thickness of the two sides of the separator (1).
8. An accumulator, characterized by comprising a case in which a plurality of cells are arranged, each cell comprising a positive plate (2), a negative plate (2) and a separator (1), the separator (1) being used to separate the positive plate (2) from the negative plate (2), the separator (1) having an area larger than the area of the plates (2), the separator (1) comprising a contact middle portion (3) in surface contact with the plates (2) and a non-contact side portion (4) not in surface contact with the plates (2), the contact middle portion (3) having a thickness larger than the thickness of the non-contact side portion (4); after the battery unit is assembled in the box body, the pole plate (2) is arranged in the contact middle part (3) and compresses the contact middle part (3).
9. An accumulator according to claim 8, characterized in that the thickness difference between the contact central portion (3) and the non-contact lateral portion (4) after compression does not exceed 2 mm.
10. An accumulator according to claim 8, characterized in that said separator (1) is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837236.9U CN210073999U (en) | 2019-06-04 | 2019-06-04 | AGM separator, manufacturing equipment and storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837236.9U CN210073999U (en) | 2019-06-04 | 2019-06-04 | AGM separator, manufacturing equipment and storage battery |
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| Publication Number | Publication Date |
|---|---|
| CN210073999U true CN210073999U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920837236.9U Active CN210073999U (en) | 2019-06-04 | 2019-06-04 | AGM separator, manufacturing equipment and storage battery |
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| CN (1) | CN210073999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233226A (en) * | 2019-06-04 | 2019-09-13 | 天能电池集团股份有限公司 | A kind of AGM partition and preparation method thereof, making apparatus and battery |
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2019
- 2019-06-04 CN CN201920837236.9U patent/CN210073999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233226A (en) * | 2019-06-04 | 2019-09-13 | 天能电池集团股份有限公司 | A kind of AGM partition and preparation method thereof, making apparatus and battery |
| CN110233226B (en) * | 2019-06-04 | 2024-06-25 | 天能电池集团股份有限公司 | AGM separator, manufacturing method and manufacturing equipment thereof and storage battery |
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