An all-encompassing fiberglass plate box

Abstract

The present invention relates to the technical field of battery production, and particularly to a fully enclosed glass fiber plate box. The glass fiber plate box is produced by molding with glass fiber materials, having no seams on the surface, with folding and compression structures on the sides and bottom, and having grooves on the inner side of the front. The folding and compression structure is a V-shaped folding valley concave into the box. The production method is as follows: (1) The raw materials are defibrated and mixed in a certain proportion, and diluted with water to prepare a slurry; (2) The molding die is immersed in the slurry for vacuum dewatering; (3) Drying to produce a fully enclosed glass fiber plate box. The fully enclosed glass fiber plate box of the present invention is produced by using molding technology, is an integral structure, has no seams and damages on the surface; has a compression and folding structure, is easy to install, can fully enclose the part of the plate immersed in the electrolyte, reduces plate looseness and shedding of active substances, and prolongs the service life of the battery; can adapt to the assembly requirements of different plates; has fewer production steps, simple process, less waste and high production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and particularly to a fully enclosed glass fiber plate box. Background Art

[0002] In the production of batteries, a separator that separates the positive and negative electrodes, stores electrolyte, and prevents the active material of the plate from falling off needs to be covered on the surface of the plate. The separators used in valve-regulated lead-acid batteries are mostly made of glass fiber and are often processed into sheet form. When in use, the plates are wrapped between two sheets of separators, and the friction between the separator and the plate is increased by applying pressure to the separator to fix the plate. Using sheet separators can only cover the front and back sides of the plate, and cannot cover both sides of the plate, which is prone to problems such as plate loosening and active material shedding. At the same time, during the processing, too low assembly pressure will cause the plate to loosen and the active material to fall off; too high assembly pressure may damage the plate and affect the ability of the separator to store electrolyte, thereby greatly affecting the battery life. In the prior art, there is a method of splicing and sewing multiple sheet separators into a bag-shaped separator to cover the battery plates. Using a bag-shaped separator can provide a better wrapping effect on the plates, but the production process of the bag-shaped separator requires bonding and sewing of the sheet separators, the processing process is complex, and due to the low bonding strength of the glass fiber material, the processing process will damage the separator and has a short life. Summary of the Invention

[0003] Aiming at the technical problems in the prior art that the processing technology of the bag-shaped separator for battery plates is complex, the processing process is easy to be damaged, and the life is short, the present invention provides a fully enclosed glass fiber plate box. The glass fiber plate box is produced by a one-step production method, with no seams and damage on the surface; it has a compressed folding structure, is easy to install, can fully cover the part of the plate immersed in the electrolyte, reduce plate loosening and active material shedding, and extend the battery life; it can adapt to the assembly requirements of different plates; the production steps are few, the process is simple, the waste is small, and the production efficiency is high.

[0004] In a first aspect, the present invention provides a fully enclosed glass fiber plate box, which is produced by molding with glass fiber materials, and includes a front surface, a back surface, two side surfaces and a bottom surface, with no seams on the surface. The two side surfaces and the bottom surface are respectively provided with a folding compression structure near the front surface, and the folding compression structure is a V-shaped folding valley concave into the box.

[0005] Further, grooves adapted to the V-shaped folding valleys after folding and compression are provided at the positions where the inner side of the front surface is connected to other surfaces, and the V-shaped folding valleys after folding and compression can be completely embedded in the grooves.

[0006] Further, after the glass fiber plate box is folded and compressed, the internal space is a cuboid with dimensions consistent with the corresponding plate. When in use, first put the glass fiber plate box outside the corresponding plate, and then fold and compress the glass fiber plate box to make it closely fit with the corresponding plate, which can meet the requirements of storing electrolyte, separating the positive and negative electrodes, and preventing the shedding of the active material of the plate.

[0007] Further, the production method of the fully enclosed glass fiber plate box includes the following steps:

[0008] (1) Pulp making: The raw materials are fully defibrated and mixed in proportion, a certain amount of water is added according to the required solid concentration, and then a certain amount of sulfuric acid is added according to the required pH value of the slurry, and then fully stirred and defibrated to prepare a slurry with a certain concentration;

[0009] (2) Molding: Immerse the molding die in the slurry and perform vacuum dehydration. The glass fibers in the slurry are intertwined and overlapped to form on the surface of the die to obtain a molded product;

[0010] (3) Drying: Dry the molded product to obtain a fully enclosed glass fiber plate box.

[0011] Further, in step (1), the composition and ratio range of the raw materials are: 75-90 parts by weight of high-alkali glass microfibers, 5-15 parts by weight of chopped glass fibers, 5-10 parts by weight of chopped double-melting-point polyester fibers, and a total of 100 parts by weight of high-alkali glass microfibers, chopped glass fibers, and chopped double-melting-point polyester fibers.

[0012] Further, in step (1), the diameter of the high-alkali glass microfibers is 0.3-5 μm and the length is 0.5-1.2 mm, the diameter of the chopped glass fibers is 6-15 μm and the length is 6-12 mm, and the diameter of the chopped double-melting-point polyester fibers is 12-20 μm and the length is 6-12 mm.

[0013] Further, in step (1), the mass concentration of the slurry is 1.5‰-3‰.

[0014] Further, in step (2), the molding die is composed of a three-dimensional molding net and a die base, and the mesh numbers of the molding net in different regions are different to meet the thickness requirements of different regions of the plate box, and the size of the molding die corresponds to the plate.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) A fully enclosed glass fiber plate box provided by the present invention uses a molding method. The glass fiber slurry is molded once on the surface of the molding die. The produced fully enclosed glass fiber plate box is an integral structure, with no seams and damage on the surface and a long service life;

[0017] (2) The all - wrapped glass fiber plate box provided by the present invention has a folding and compression structure. When in use, first put the glass fiber plate box on the corresponding plate, and then fold and compress the glass fiber plate box so that it fits tightly with the corresponding plate, which is easy to install; it can fully wrap the part of the plate immersed in the electrolyte, and can give full play to functions such as storing the electrolyte and separating the positive and negative electrodes; at the same time, it can effectively reduce the occurrence of plate loosening and active material shedding, and further extend the service life of the storage battery;

[0018] (3) The present invention can adjust the size and material thickness of the glass fiber plate box by controlling the size of the forming die and the production process parameters according to actual usage needs, so as to adapt to the assembly requirements of different plates, and has high flexibility;

[0019] (4) The production steps of the present invention are few and the process is simple. There is no need to repeatedly process the materials, which saves manpower and material resources, reduces waste of raw materials, and has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the front view of the forming die of the all - wrapped glass fiber plate box in Embodiment 1.

[0022] Figure 2 It is the left view of the forming die of the all - wrapped glass fiber plate box in Embodiment 1.

[0023] Figure 3 It is the top view of the forming mesh of the forming die of the all - wrapped glass fiber plate box in Embodiment 1.

[0024] Figure 4 It is the front view of the all - wrapped glass fiber plate box in Embodiment 1.

[0025] Figure 5 It is the top view of the all - wrapped glass fiber plate box before compression in Embodiment 1.

[0026] Figure 6 It is the top view of the all - wrapped glass fiber plate box after compression in Embodiment 1.

[0027] In the figure, 1 - forming mesh, 2 - die base. DETAILED DESCRIPTION OF THE INVENTION

[0028] To enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.;

[0029] Embodiment 1

[0030] Use a fully enclosed glass fiber pole plate box forming mold as shown in Figures 1-3 to mold a fully enclosed glass fiber pole plate box. The corresponding pole plate size is: 72mm×101mm on the side and 2mm in thickness. The specific steps are as follows:

[0031] (1) Pulp making: Use 82 parts by weight of alkali glass microfibers, 8 parts by weight of chopped glass fibers, and 10 parts by weight of chopped double melting point polyester fibers to fully defiberize and mix in a certain proportion, and add water to prepare a slurry with a mass percentage concentration of 2‰;

[0032] (2) Forming: Immerse the forming mesh 1 into the slurry prepared in step (1). Connect the forming mold to the vacuum pump pipeline and use the vacuum pump pipeline for vacuum dehydration. The forming vacuum pressure is set to 0.05 kPa, and the glass fibers in the slurry are formed on the surface of the mold to obtain a formed product;

[0033] (3) Drying: Put the formed product in step (2) into an oven for drying. The drying temperature is 150°C, and a fully enclosed glass fiber pole plate box is obtained after drying.

[0034] The front view and top view of the made fully enclosed glass fiber pole plate box are as shown in Figure 4 and Figure 5 . The glass fiber pole plate box includes a front surface, a back surface, two side surfaces, and a bottom surface. There are no seams on the surface. On one side of the two side surfaces and the bottom surface close to the front surface, there are respectively folding and compressing structures. The folding and compressing structures are V-shaped folding valleys concave into the box. At the positions where the inner side of the front surface is connected to other surfaces, there are grooves adapted to the V-shaped folding valleys after folding and compressing.

[0035] The top view after compression is as shown in Figure 6 . The V-shaped folding valleys after folding and compressing are completely embedded into the grooves. A rectangular parallelepiped space with the same size as the corresponding pole plate is formed inside the glass pole plate box, and the top view section is a rectangle.

[0036] During use, insert the pole plate into the internal space of the fully enclosed glass fiber pole plate box, and then compress the fully enclosed glass fiber pole plate box into the shape as shown in Figure 6The shown form makes the electrode plate closely adhere to and be fixed on the inner wall of the fully wrapped glass fiber electrode plate box.

[0037] The obtained glass electrode plate box has a maximum physical and chemical pore size of 15.5 μm, a porosity of 91%, and an acid absorption amount of 5.5 g / g at 50 kPa.

[0038] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope of the present invention. / Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, and they should all be covered within the protection scope of the present invention.

Claims

1. A fully enclosed glass fiber plate box, characterized in that, the glass fiber plate box is produced by molding with glass fiber material, including a front surface, a back surface, two side surfaces and a bottom surface, with no seams on the surface, and the two side surfaces and the side of the bottom surface close to the front surface respectively contain folding and compression structures, and the folding and compression structures are V-shaped folding valleys concave into the box; grooves adapted to the V-shaped folding valleys after folding and compression are provided at the positions where the inner side of the front surface of the glass fiber plate box is connected to other surfaces, and the V-shaped folding valleys after folding and compression can be completely embedded in the grooves; after the glass fiber plate box is folded and compressed, the internal space is a cuboid, and the size is the same as that of the corresponding plate; when in use, first put the glass fiber plate box on the outside of the corresponding plate, and then fold and compress the glass fiber plate box to make it closely fit with the corresponding plate.

2. The fully enclosed glass fiber plate box according to claim 1, characterized in that, the production method includes the following steps: (1) Pulping: The raw materials are fully defibrated and mixed in proportion, a certain amount of water is added according to the required solid concentration, and then a certain amount of sulfuric acid is added according to the required pH value of the slurry, and it is fully stirred and defibrated to prepare a slurry with a certain concentration; (2) Forming: Immerse the forming mold in the slurry and perform vacuum dehydration. The glass fibers in the slurry are intertwined and overlapped to form on the surface of the mold to obtain a formed product; (3) Drying: Dry the formed product to obtain a fully enclosed glass fiber plate box.

3. The fully enclosed glass fiber plate box according to claim 2, characterized in that, in step (1), the raw material components and their proportion ranges are: 75-90 parts by weight of high-alkali glass microfibers, 5-15 parts by weight of chopped glass fibers, 5-10 parts by weight of chopped double-melting-point polyester fibers, and the total of high-alkali glass microfibers, chopped glass fibers and chopped double-melting-point polyester fibers is 100 parts by weight.

4. The fully enclosed glass fiber plate box according to claim 3, characterized in that, the high-alkali glass microfibers have a diameter of 0.3-5 μm and a length of 0.5-1.2 mm, the chopped glass fibers have a diameter of 6-15 μm and a length of 6-12 mm, and the chopped double-melting-point polyester fibers have a diameter of 12-20 μm and a length of 6-12 mm.

5. The fully enclosed glass fiber plate box according to claim 2, characterized in that, the mass concentration of the slurry in step (1) is 1.5‰-3‰.

6. The fully enclosed glass fiber plate box according to claim 2, characterized in that, in step (2), the forming mold is composed of a forming net with a three-dimensional structure and a mold base, and the size of the forming mold corresponds to that of the plate.

Images