Wear-resistant PE partition plate for storage battery

Abstract

The utility model discloses a wear-resistant storage battery PE partition plate, which relates to the technical field of storage battery PE partition plates and comprises a PE partition plate main body, ribs are uniformly distributed on the periphery of the outer surface of the PE partition plate main body, and discontinuous ribs are arranged on the periphery of the outer surface of the PE partition plate main body and positioned among the ribs. An insulating film is fixedly arranged on the inner surface of the PE partition plate main body, the inner surface of the PE partition plate main body is divided into an upper layer, a middle layer and a lower layer and is fixedly provided with a rubber ring, the insulating film is a PI film, the inner side end of the rubber ring penetrates out of the insulating film by 2mm-4mm, the inner side end of the rubber ring is arranged in a downward inclined mode, the downward inclined angle of the rubber ring is alpha, and alpha is larger than 30 degrees and smaller than or equal to 45 degrees. Compared with an existing common storage battery PE partition plate, the wear-resistant storage battery PE partition plate has the advantages that the negative plate is fully prevented from shaking and continuously rubbing with the PE partition plate main body, friction is reduced, wear resistance is improved, the influence of vibration on the negative plate can be reduced, and the negative plate is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of PE separators for batteries, in particular to a wear-resistant PE separator for batteries. Background Art

[0002] Lead-acid battery is a battery whose electrodes are mainly made of lead and its oxides and whose electrolyte is sulfuric acid solution. PE separator is an important component. The quality of PE separator directly affects the performance of lead-acid battery. The function of battery PE separator is to ensure insulation and isolation between positive and negative plates and prevent short circuit of the internal circuit of the battery. A certain amount of electrolyte is stored in the porous separator between the plates, which can ensure high conductivity and battery reaction requirements; the battery PE separator material itself is an insulator, but it must have a loose porous structure and be able to absorb and release a large amount of electrolyte solution.

[0003] For example, the public document with application number 201820210598.0 discloses a high-efficiency PE separator for a battery. The utility model has a simple structure, reasonable design, good mechanical strength and vibration resistance. At the same time, the positive electrode side can maintain contact with more electrolyte to improve the power generation performance, and the negative electrode side can maintain a certain amount of exhaust gas, which is helpful for the gas discharge of the battery, thereby improving the service life of the battery. However, the battery PE separator has a certain sliding friction force on the surface of the positive and negative plates on both sides of the separator or in the bag-type PE separator, which causes a certain wear of the positive and negative plates during the friction process, affecting the service life and quality of the entire battery.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a wear-resistant battery PE separator is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a wear-resistant PE separator for a battery to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wear-resistant battery PE separator, comprising a PE separator body, the outer surface of the PE separator body is evenly distributed with ribs, the outer surface of the PE separator body is provided with discontinuous ribs between the ribs, the inner surface of the PE separator body is fixedly provided with an insulating film, and the inner surface of the PE separator body is divided into three layers of upper, middle and lower layers with rubber rings fixedly installed.

[0007] Preferably, the PE separator body is bag-shaped, and is composed of ultra-high molecular polyethylene, amorphous silica and specially prepared hydrocarbon oil, in which carbon black and antioxidants are added, and the material of the ribs and intermittent ribs is the same as that of the PE separator body.

[0008] Preferably, the protruding thickness of the rib is between 0.5 cm and 0.7 cm, and the protruding thickness of the interrupted rib is always smaller than the protruding thickness of the rib, and the interrupted rib is arranged in a concave arc shape.

[0009] Preferably, the insulating film is a PI film, and the inner end of the rubber ring penetrates the insulating film by mm-mm.

[0010] Preferably, the inner end of the rubber ring is tilted downward, and the downward tilt angle of the rubber ring is α, and α is greater than 30° and less than or equal to 45°.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model provides an insulating film and an rubber ring. The insulating film formed by the PI film has a smooth surface. When the negative plate is inserted into the PE separator body, the friction between the surfaces is small, and the insertion is easier. The wear caused by the friction during insertion is greatly reduced, and the wear caused by the friction is effectively prevented from causing damage to the negative plate and the PE separator body. At the same time, the rubber ring is arranged obliquely downward, and can be smoothly inserted from the top, and squeezed and contracted to fit tightly to the surface of the negative plate. When the negative plate is pulled upward, the rubber ring will fit the surface of the negative plate and rotate upward, and the more the rubber ring around the ring rotates and moves upward, the stronger its pushing force toward the inner middle part is, so that the negative plate can be firmly squeezed and fixed inside the PE separator body, preventing the negative plate from shaking and constantly rubbing against the PE separator body, reducing the possibility of friction, and further improving the wear resistance in disguise. The negative plate is firmly and stably inserted into the PE separator body, and the influence of vibration on the negative plate is also reduced, making the negative plate more stable.

[0013] 2. The utility model provides ribs and intermittent ribs. The protruding ribs greatly enhance the ability of the partition to absorb electrolyte, thereby enhancing the storage capacity of the battery and improving the low-temperature discharge performance, which can greatly extend the service life of the battery. The arc-shaped concave convex intermittent ribs can avoid the slipping of lead sulfate during load discharge to a certain extent, which can slow down the powder shedding phenomenon and reduce the influence of powder shedding on the battery service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the PE separator of the utility model;

[0016] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0017] In the figure: 1. PE separator body; 2. ribs; 3. intermittent ribs; 4. insulating film; 5. rubber ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-Figure 3 As shown, a wear-resistant PE separator for a battery comprises a PE separator body 1, ribs 2 are evenly distributed around the outer surface of the PE separator body 1, discontinuous ribs 3 are arranged around the outer surface of the PE separator body 1 between the ribs 2, an insulating film 4 is fixedly arranged on the inner surface of the PE separator body 1, and the inner surface of the PE separator body 1 is divided into three layers, upper, middle and lower, and a rubber ring 5 is fixedly installed. The PE separator body 1 is in a bag shape and is composed of ultra-high molecular polyethylene, amorphous silicon dioxide and a specially prepared hydrocarbon oil. There are carbon black and antioxidants, and the material of the ribs 2 and the intermittent ribs 3 is the same as that of the PE separator body 1, the protruding thickness of the ribs 2 is between 0.5cm and 0.7cm, and the protruding thickness of the intermittent ribs 3 is always smaller than the protruding thickness of the ribs 2, and the intermittent ribs 3 are arranged in a concave arc shape, the insulating film 4 is a PI film, and the inner end of the rubber ring 5 passes through the insulating film 4 by a length of 2mm-4mm, the inner end of the rubber ring 5 is arranged to be tilted downward, and the downward tilt angle of the rubber ring 5 is α, and α is greater than 30° and less than or equal to 45°.

[0020] Furthermore, the insulating film 4 utilizes the material properties of the PI film to reduce the friction between the negative electrode plate and the inner side of the PE separator body 1 when the negative electrode plate is inserted, thereby reducing wear.

[0021] Furthermore, the rubber ring 5 is tilted downward so that the negative electrode plate can be inserted normally, and the negative electrode plate moves up, which will pull the protruding part of the rubber ring 5 to rotate upward, thereby increasing the pushing force of the rubber ring 5 toward the middle, and then the negative electrode plate can be firmly squeezed and fixed inside the PE separator body 1, preventing the negative electrode plate from shaking and constantly rubbing against the PE separator body 1, reducing the possibility of friction, and further improving the wear resistance in disguise.

[0022] Furthermore, the rubber ring 5 can firmly fix the negative electrode plate inside the PE separator body 1, reduce the impact of vibration on the negative electrode plate, and make the negative electrode plate more stable.

[0023] Furthermore, the ribs 2 are convex, which improves the ability of the separator to absorb electrolyte, thereby enhancing the storage capacity of the battery and improving the low-temperature discharge performance, which can greatly extend the service life of the battery.

[0024] Furthermore, the intermittent ribs 3 protrude outwards and are located in the middle of each rib 2, and are in a concave arc shape, so as to prevent the lead sulfate from sliding down during discharge and slow down the powdering phenomenon.

[0025] Working principle: When using the wear-resistant battery PE separator, first, the negative plate is inserted through the opening and installed in the PE separator body 1. When the negative plate is inserted, the smooth surface insulating film 4 formed by the PI film reduces the sliding friction, thereby avoiding the negative plate and the inner side of the PE separator body 1 from wearing each other. At the same time, the rubber ring 5 is set obliquely downward, so that it can be smoothly inserted from the top, squeezed and contracted, and tightly fit on the surface of the negative plate. When the negative plate is pulled upward, the rubber ring 5 will rotate upward in accordance with the surface of the negative plate, and the more the circumferential rubber ring 5 rotates and moves upward, the stronger its pushing force toward the inner middle part is, so that the negative plate can be firmly squeezed and fixed inside the PE separator body 1. When the entire separator is put into use in the battery, the protruding ribs 2 can enhance the ability of the separator to absorb electrolyte and enhance the storage performance of the battery. The arc-shaped concave convex intermittent ribs 3 can avoid the slipping of lead sulfate during load discharge to a certain extent, and can slow down the powdering phenomenon. This is the working principle of the wear-resistant battery PE separator.

Claims

1. A wear-resistant PE separator for a battery, comprising a PE separator body (1), characterized in that: The outer surface of the PE separator body (1) is evenly distributed with ribs (2), the outer surface of the PE separator body (1) is provided with discontinuous ribs (3) between the ribs (2), the inner surface of the PE separator body (1) is fixedly provided with an insulating film (4), and the inner surface of the PE separator body (1) is divided into three layers, namely, upper, middle and lower layers, on which a rubber ring (5) is fixedly installed.

2. A wear-resistant battery PE separator according to claim 1, characterized in that: The PE separator body (1) is in a bag shape and is made of ultra-high molecular weight polyethylene, amorphous silicon dioxide and specially prepared hydrocarbon oil. Carbon black and antioxidants are also added to the mixed material. The material of the ribs (2) and the intermittent ribs (3) is the same as that of the PE separator body (1).

3. A wear-resistant battery PE separator according to claim 1, characterized in that: The protruding thickness of the rib (2) is between 0.5 cm and 0.7 cm, and the protruding thickness of the intermittent rib (3) is always smaller than the protruding thickness of the rib (2), and the intermittent rib (3) is arranged in a concave arc shape.

4. A wear-resistant battery PE separator according to claim 1, characterized in that: The insulating film (4) is a PI film, and the inner end of the rubber ring (5) penetrates the insulating film (4) by 2 mm to 4 mm.

5. A wear-resistant battery PE separator according to claim 1, characterized in that: The inner end of the rubber ring (5) is arranged to be tilted downward, and the downward tilt angle of the rubber ring (5) is α, and α is greater than 30° and less than or equal to 45°.

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