Battery separator of new energy electric scooter

Abstract

The utility model relates to the technical field of battery partition plates, in particular to a battery partition plate of a new energy electric scooter, which comprises a first glass fiber substrate and a coarse glass fiber mat which are formed by an integrated composite technology, and a second glass fiber substrate is laid on the coarse glass fiber mat. The second glass fiber substrate and the fine glass fiber layer are subjected to composite molding through the integrated composite technology, GZP organic fibers are added into the fine glass fiber layer, and after molding, the first glass fiber substrate and the coarse glass fiber mat as well as the second glass fiber substrate and the fine glass fiber layer are synchronously fed into an inner grid and are synchronously impregnated with an adhesive; compared with the prior art, the production and manufacturing technology of the partition plate is optimized, and the overall service life of the battery of the new energy electric vehicle for riding instead of walk is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of battery separators, in particular to a battery separator for a new energy electric vehicle. Background Art

[0002] The lead-acid battery industry has been searching for a cheaper and better separator. Since J. Devitt discovered that glass fiber can be used as a separator material for batteries, glass fiber separators have become the separator of choice for lead-acid battery designs.

[0003] Glass fiber has many performance advantages as a separator for lead-acid batteries: extremely high acid resistance; very easy to be wetted by acid (can be wetted for a long time); excellent corrosion resistance; glass fiber can be made into fibers with very small diameters, so that the separator has a very high porosity; it is an inorganic material and therefore has good high-temperature stability; low price. However, in the actual battery production industry, the use of glass fiber materials to make battery separators is currently rare, and ultra-high molecular weight polyethylene materials are still more commonly used.

[0004] In the prior art, a Chinese patent document with publication number CN216085204U proposes a PE separator for a lead-acid battery, which includes a substrate, a plurality of mutually parallel and horizontally distributed intermittent ribs distributed on the front side of the substrate and a plurality of mutually parallel back ribs on the back side of the substrate. The substrate, the intermittent ribs and the back ribs are all made of ultra-high molecular weight polyethylene material, which extends the service life of the battery. However, consistent with the traditional method, the separator has low technical content and simple production process, so that during actual use, the battery as a whole will encounter erosion from rainwater and other factors, as well as vibration from the outside during use, which will affect the service life of the battery. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a battery separator for a new energy electric vehicle to solve the problems of poor stability and durability of the separator during actual use and short service life of the battery.

[0006] Based on the above-mentioned purpose, the utility model provides a battery separator for a new energy electric vehicle, including a separator, wherein the separator includes an integrally formed first glass fiber substrate and a coarse glass fiber mat, an integrally formed second glass fiber substrate and a fine glass fiber layer are laid on the coarse glass fiber mat, GZP organic fiber is added to the fine glass fiber layer, the first glass fiber substrate, the coarse glass fiber mat, the second glass fiber substrate and the fine glass fiber layer are all bonded with an adhesive and are arranged on an inner grid.

[0007] Preferably, the density ratio of the coarse glass fiber mat to the fine glass fiber layer at basis weight is 2:8.

[0008] Preferably, the diameter of the fine glass fiber layer is distributed in the range of 1-2 μm, and the diameter of the coarse glass fiber mat is distributed in the range of 3-5 μm.

[0009] Preferably, one side of the coarse glass fiber mat faces the positive plate on the battery.

[0010] Preferably, latex is added between the glass fiber layers in the separator to increase the bonding strength.

[0011] Beneficial effects of the utility model:

[0012] 1. The battery separator of this new energy electric vehicle is made of multiple layers of materials with different properties during the separator manufacturing process. Adding coarse glass fiber mat on one side of the first glass fiber substrate in the separator can increase the overall thickness and mechanical strength of the separator and improve its penetration resistance. In addition, on the basis of the coarse glass fiber mat, the second glass fiber substrate and the fine glass fiber layer are laid in one piece by gluing and pressing. In addition, they are all bonded with adhesive and arranged on the inner grid. Subsequently, an active traction device is used to enter the drying system without being affected by external forces to complete the separator composite procedure, so that the two are organically combined without stratification or peeling. In this way, the use of composite technology can improve the oxidation resistance of the separator, not only maintaining the integrity of the overall structure, but also enhancing the stability and durability of the separator.

[0013] 2. The battery separator of this new energy electric vehicle has different ratios of coarse glass fiber mat and fine glass fiber layer, which not only increases the content of fine glass fiber layer in the separator, enhances the mechanical strength of the separator and the density under the same basis weight, but also further improves the deep cycle service life of the battery in the separator. In addition, the separator can effectively prevent the collision of positive and negative plates and play a buffering role. The coarse glass fiber mat side facing the positive plate can effectively prevent the shedding of active materials, thereby extending the life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3This is a layered schematic diagram of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the fine glass fiber layer of the utility model.

[0019] The following are marked in the figure:

[0020] 1. Partition; 2. First glass fiber substrate; 3. Coarse glass fiber mat; 4. Second glass fiber substrate; 5. Fine glass fiber layer; 6. Inner grid; 7. GZP organic fiber. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0023] like Figures 1 to 4As shown, the battery separator of the new energy electric vehicle, the separator 1 includes an integrally formed first glass fiber substrate 2 and a coarse glass fiber mat 3, on which is laid an integrally formed second glass fiber substrate 4 and a fine glass fiber layer 5, and the fine glass fiber layer 5 is added with GZP organic fiber 7. The first glass fiber substrate 2, the coarse glass fiber mat 3, the second glass fiber substrate 4 and the fine glass fiber layer 5 are all bonded with an adhesive and arranged on an inner grid 6. The diameter of the fine glass fiber layer 5 is distributed in the range of 1-2um, and the diameter of the coarse glass fiber mat 3 is distributed in the range of 3-5um. In the manufacturing process of the separator 1, multiple layers of materials with different properties are used to make it. Adding coarse glass fiber felt 3 on one side of the first glass fiber substrate 2 in the partition 1 can increase the overall thickness and mechanical strength of the partition 1 and improve its anti-penetration ability. In addition, on the basis of the coarse glass fiber felt 3, the second glass fiber substrate 4 and the fine glass fiber layer 5 are laid as an integral part by gluing and pressing. In addition, they are all bonded with adhesive and arranged on the inner grid 6. Then, an active traction device is used to enter the drying system without being affected by external forces to complete the partition composite procedure, so that the two are organically combined without stratification or peeling. In this way, the use of composite technology can improve the oxidation resistance of the partition, not only maintaining the integrity of the overall structure, but also enhancing the stability and durability of the partition.

[0024] like Figure 4 As shown, the GZP organic fiber 7 forms a mesh felt material after solidification, and the mesh felt material has a porous structure. Because the GZP organic fiber 7 is a low melting point fiber (110-150°C), the addition of the GZP organic fiber 7 can be improved by uniform mixing technology. The pore size distribution of the separator can be improved to make it more uniform, and the adsorption amount of the electrolyte can be increased, thereby improving the performance of the battery.

[0025] like Figure 1 、 Figure 2 、 Figure 3 As shown, the density ratio of the coarse glass fiber mat 3 and the fine glass fiber layer 5 at the basis weight is 2:8, and one side of the coarse glass fiber mat 3 faces the positive plate on the battery. The different ratios of the coarse glass fiber mat 3 and the fine glass fiber layer 5 not only increase the content of the fine glass fiber layer 5 in the separator 1, enhance the mechanical strength of the separator and the density at the same basis weight, but also further improve the deep cycle service life of the battery in the separator 1. In addition, the separator 1 can effectively prevent the positive and negative plates from colliding and play a buffering role. The side of the coarse glass fiber mat 3 facing the positive plate can effectively prevent the active material from falling off, thereby extending the life of the battery.

[0026] like Figure 1 、 Figure 2 、 Figure 3As shown, latex is added between the glass fiber layers in the partition 1 to increase the bonding strength, so the partition is denser and harder.

[0027] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0028] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A battery separator for a new energy electric vehicle, comprising a separator (1), characterized in that: The partition (1) comprises an integrally formed first glass fiber substrate (2) and a coarse glass fiber mat (3); an integrally formed second glass fiber substrate (4) and a fine glass fiber layer (5) are laid on the coarse glass fiber mat (3); GZP organic fibers (7) are added to the fine glass fiber layer (5); the first glass fiber substrate (2), the coarse glass fiber mat (3), the second glass fiber substrate (4), and the fine glass fiber layer (5) are all bonded with an adhesive and are arranged on an inner grid (6).

2. The battery separator of the new energy electric vehicle according to claim 1, characterized in that: The GZP organic fibers (7) are cured to form a porous mesh felt material.

3. The battery separator of the new energy electric vehicle according to claim 1, characterized in that: The density ratio of the coarse glass fiber mat (3) to the fine glass fiber layer (5) at basis weight is 2:

8.

4. The battery separator for the new energy electric vehicle according to claim 1, characterized in that: The diameter of the fine glass fiber layer (5) is distributed in the range of 1-2 μm, and the diameter of the coarse glass fiber mat (3) is distributed in the range of 3-5 μm.

5. The battery separator of the new energy electric vehicle according to claim 3, characterized in that: One side of the coarse glass fiber mat (3) faces the positive plate on the battery.

6. The battery separator of the new energy electric vehicle according to claim 1, characterized in that: Latex is added between the glass fiber layers in the partition (1) to increase the bonding strength.

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