A high strength separator for lead acid batteries

Abstract

This utility model discloses a high-strength separator for lead-acid batteries, relating to the field of lead-acid battery separator technology. It includes a base layer and a protective layer. The base layer comprises a first reinforcing layer and a second reinforcing layer. The upper surface of the first reinforcing layer has multiple transverse placement grooves, each containing a fixed transverse reinforcing rib. The upper surface of each of the second reinforcing layers has multiple longitudinal placement grooves, each containing a fixed longitudinal reinforcing rib. By using ultra-high molecular weight polyethylene (UHMWPE) sheets for the base layer and incorporating transverse and longitudinal reinforcing ribs, this utility model effectively resists the stress generated by the expansion and contraction of the electrode plates during the charging and discharging process of the lead-acid battery. This prevents the separator from deforming and cracking in the transverse and longitudinal directions, maintains a stable spacing between the electrode plates, avoids short circuits, and significantly extends the service life of both the separator and the battery.

Description

Technical Field

[0001] This utility model relates to the field of lead-acid battery separator technology, specifically to a high-strength separator for lead-acid batteries. Background Technology

[0002] Lead-acid batteries are a widely used chemical power source, playing an important role in many fields such as automobile starting, energy storage, and backup power. The separator is one of the key components of lead-acid batteries, and its performance directly affects the battery's lifespan and operating efficiency.

[0003] Traditional lead-acid battery separators have many problems. First, they lack mechanical strength. During the charging and discharging process, the plates expand and contract, and ordinary separators cannot withstand such stress changes, easily leading to cracks, deformations, and short circuits, which severely shortens the battery life. On the other hand, in the face of complex operating conditions, such as vibration and high temperature, traditional separators cannot effectively protect the plates, causing the active material on the plates to fall off, reducing the charging and discharging efficiency and stability of the battery. Utility Model Content

[0004] In view of the problems existing in the high-strength separators of lead-acid batteries, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a high-strength separator for lead-acid batteries, which solves the problem of insufficient mechanical strength of lead-acid battery separators. During the charging and discharging process of the battery, the plates will expand and contract, and ordinary separators are difficult to withstand such stress changes, which can easily lead to cracking, deformation, and other problems, resulting in short circuits of the plates and seriously shortening the battery life.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-strength separator for lead-acid batteries includes a base layer and a protective layer. The base layer includes a first reinforcing layer and a second reinforcing layer. The upper surface of the first reinforcing layer has multiple transverse placement slots, and each transverse placement slot is fixedly connected to a transverse reinforcing rib. The upper surface of each second reinforcing layer has multiple longitudinal placement slots, and each longitudinal placement slot is fixedly connected to a longitudinal reinforcing rib. The protective layer is fixedly connected to the lower surface of the base layer.

[0008] Preferably, the first reinforcing layer and the second reinforcing layer are ultra-high molecular weight polyethylene sheets.

[0009] Preferably, the protective layer is a glass fiber felt.

[0010] Preferably, the outer surfaces of the base layer and the protective layer are provided with a wear-resistant coating.

[0011] Preferably, the wear-resistant coating is a tungsten carbide coating or a ceramic coating.

[0012] Preferably, the outer surface of the wear-resistant coating is uniformly provided with multiple anti-detachment grooves.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. This utility model, by using ultra-high molecular weight polyethylene board for the base layer and setting transverse and longitudinal reinforcing ribs, can effectively resist the stress generated by the expansion and contraction of the plates during the charging and discharging process of lead-acid batteries, prevent the separator from deforming and cracking in the transverse and longitudinal directions, maintain a stable distance between the plates, avoid short circuits between the plates, and greatly extend the service life of the separator and the battery.

[0015] 2. This utility model enhances the overall strength of the separator by using a thin glass fiber felt as the protective layer, effectively preventing the active material of the electrode plates from falling off. The tungsten carbide or ceramic wear-resistant coating on the base layer and outside the protective layer improves the surface hardness and wear resistance of the separator, reducing friction damage. The anti-fall-off grooves on the wear-resistant coating increase the friction between the coating and the active material of the electrode plates, preventing it from falling off, and also store electrolyte, improving the battery's charging and discharging efficiency and stability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 For the present utility model Figure 1 A three-dimensional diagram of the middle and lower levels;

[0019] Figure 3 For the present utility model Figure 2 Exploded view.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Base layer; 2. Protective layer; 3. First reinforcing layer; 4. Second reinforcing layer; 5. Transverse reinforcing ribs; 6. Longitudinal reinforcing ribs; 7. Wear-resistant coating. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This utility model discloses a high-strength separator for lead-acid batteries.

[0024] Example 1

[0025] Reference Figure 1-3 A high-strength separator for lead-acid batteries includes a base layer 1 and a protective layer 2. The base layer 1 includes a first reinforcing layer 3 and a second reinforcing layer 4. The upper surface of the first reinforcing layer 3 has multiple transverse placement grooves, and each transverse placement groove is fixedly connected to a transverse reinforcing rib 5. The upper surface of each second reinforcing layer 4 has multiple longitudinal placement grooves, and each longitudinal placement groove is fixedly connected to a longitudinal reinforcing rib 6. The protective layer 2 is fixedly connected to the lower surface of the base layer 1.

[0026] Reference Figure 1-2 The first reinforcing layer 3 and the second reinforcing layer 4 are ultra-high molecular weight polyethylene sheets.

[0027] The base layer consists of a first reinforcing layer 3 and a second reinforcing layer 4, both made of ultra-high molecular weight polyethylene (UHMWPE), a material with high strength and good chemical stability. The first reinforcing layer 3 has transverse reinforcing ribs 5 in its transverse placement grooves, and the second reinforcing layer 4 has longitudinal reinforcing ribs 6 in its longitudinal placement grooves. During the charging and discharging process of the lead-acid battery, the plates expand and contract due to chemical reactions, generating stress. The transverse reinforcing ribs 5 effectively resist the transverse stress of the plates, preventing deformation or cracking of the separator in the transverse direction, ensuring stable transverse spacing between the plates, and avoiding short circuits caused by transverse displacement of the plates. The longitudinal reinforcing ribs 6 mainly bear the longitudinal tensile force of the plates, enhancing the longitudinal strength of the separator, ensuring that the separator does not break longitudinally when the plates expand and contract, maintaining the overall structural integrity of the separator, thereby improving the mechanical strength of the separator and extending its service life.

[0028] Example 2

[0029] Based on Example 1, referring to Figure 1 The protective layer 2 is a thin glass fiber felt.

[0030] Glass fiber mat possesses excellent electrolyte adsorption capacity and mechanical strength. When combined with ultra-high molecular weight polyethylene (UHMWPE) sheets, it not only enhances the overall strength of the separator but also effectively prevents the active material from detaching from the electrode plates. The composite process employs a special hot-melt bonding technology to tightly bond the UHMWPE sheets and glass fiber mat, forming a stable integrated structure.

[0031] Example 3

[0032] Based on Example 1, referring to Figure 1The outer surfaces of the base layer 1 and the protective layer 2 are provided with a wear-resistant coating 7, which is a tungsten carbide coating or a ceramic coating.

[0033] The wear-resistant coating 7 can improve the hardness and wear resistance of the separator surface, reduce damage caused by friction during battery assembly and use, and further extend the service life of the separator.

[0034] Example 4

[0035] Based on Example 1, referring to Figure 1 The outer surface of the wear-resistant coating 7 is uniformly provided with multiple anti-detachment grooves.

[0036] On the side where the separator contacts the electrode plate, a series of tiny anti-detachment grooves are designed. These grooves increase the friction between the separator and the active material of the electrode plate, effectively preventing the active material from detaching during battery charging and discharging. At the same time, the grooves also play a certain role in liquid storage, further improving battery performance.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-strength separator for lead-acid batteries, comprising a base layer (1) and a protective layer (2), characterized in that, The base layer (1) includes a first reinforcing layer (3) and a second reinforcing layer (4). The upper surface of the first reinforcing layer (3) is provided with a plurality of transverse placement grooves. Each transverse placement groove is fixedly connected with a transverse reinforcing rib (5). The upper surface of each second reinforcing layer (4) is provided with a plurality of longitudinal placement grooves. Each longitudinal placement groove is fixedly connected with a longitudinal reinforcing rib (6). The protective layer (2) is fixedly connected to the lower surface of the base layer (1).

2. The high-strength separator for lead-acid batteries according to claim 1, characterized in that, The first reinforcing layer (3) and the second reinforcing layer (4) are ultra-high molecular weight polyethylene sheets.

3. The high-strength separator for lead-acid batteries according to claim 1, characterized in that, The protective layer (2) is a thin glass fiber felt.

4. The high-strength separator for lead-acid batteries according to claim 1, characterized in that, The outer surfaces of the base layer (1) and the protective layer (2) are provided with a wear-resistant coating (7).

5. The high-strength separator for lead-acid batteries according to claim 4, characterized in that, The wear-resistant coating (7) is a tungsten carbide coating or a ceramic coating.

6. The high-strength separator for lead-acid batteries according to claim 5, characterized in that, The outer surface of the wear-resistant coating (7) is uniformly provided with multiple anti-detachment grooves.

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