Pressurized acid absorption detection device for lead-acid battery separator

Abstract

The pressurized acid absorption detection device consists of a clamping device main body and a uniform force application assembly, wherein the clamping device main body consists of an upper baffle plate, a slender guide rod and a bottom plate; the guide rod plays a role in limiting and guiding; the uniform force application assembly is composed of a pressing plate and a plurality of force application jacking pieces. And the effect of uniformly applying force to the partition plate is achieved. The utility model provides the detection device for pressurized acid absorption of the lead-acid battery partition plate, which enables the partition plate to be uniformly stressed, is high in detection precision and simple in overall structure, and has a large contact area between the partition plate and liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of lead-acid batteries, in particular to a lead-acid battery separator pressurized acid absorption detection device. Background Art

[0002] Before entering the market, batteries must be tested for various properties, and only after passing the test can they enter the market for consumers to use. As a raw material for the battery industry, although the ultrafine glass fiber separator does not directly participate in the electrochemical reaction, it has the characteristics of good acid resistance, high porosity, small pore size, and high liquid absorption rate, so that it can not only effectively enhance the retention of active substances on the grid, but also can wrap the grid well to prevent the active substances from falling off. The pressurized acid absorption ability of the separator paper during the assembly process determines the size of the battery capacity. Therefore, the pressurized acid absorption test of the separator paper becomes extremely important in our detection. However, there are defects in the existing detection methods. For example, in the comparative document CN215894883U, a test fixture for the influence of the distance between the lead-acid battery plates on the battery performance includes two acid-resistant splints and an acid-resistant locking piece for clamping the two acid-resistant splints. The two acid-resistant splints clamp the single battery to be tested. The patent has the problem that it is unable to accurately control the pressure of the partition stack at all locations to be 50 kPa, and the uneven pressurization of the partition stack affects the test results, resulting in low accuracy of the test results. Utility Model Content

[0003] In order to solve the problems of uneven stress on the partition in the detection device, low detection accuracy and complex structure, the utility model invents a lead-acid battery partition pressurized acid absorption detection device which makes the partition stress even, has high detection accuracy, simple overall structure and large contact area between the partition and the liquid.

[0004] A lead-acid battery separator pressurized acid absorption detection device, comprising a clamping device body with a separator inlet and a uniform force-applying component, wherein the clamping device body is a frame-type structure, and the force-applying component comprises a pressure plate and a plurality of force-applying and tightening members evenly distributed above the pressure plate; the clamping device body is adapted to the pressure plate, and the pressure plate is tightened by the plurality of force-applying and tightening members; a plurality of separators and pressure plates can be placed inside the frame-type clamping device body, and the uniform force-applying component can apply force to the pressure plate, and the pressure plate transmits the force to the separator.

[0005] The main body of the clamping device includes a bottom plate and an upper baffle, and a plurality of guide rods are arranged between the bottom plate and the upper baffle, and the guide rods are reinforced by cross bars. A plurality of guide rods are arranged in the main body of the clamping device, and the guide rods connect the bottom plate and the upper baffle. The pressure plate and the partition to be tested can be placed inside the main body of the clamping device, and the size of the pressure plate is adapted to the size of the main body of the clamping device, and the size of the pressure plate is also adapted to the partition, thereby ensuring that the force on each part of the partition is the same, and the pressure plate plays a role of uniform downward pressure; the guide rods can limit the position of the partition and the pressure plate placed inside, and play a role of limiting and guiding the pressure plate and the partition to fall to the correct position; the partition can be placed on the bottom plate, and a plurality of guide rods are fixed to the bottom plate, and the guide rods are evenly distributed at the edge corners of the bottom plate and the upper baffle.

[0006] Preferably, the guide rod is in the shape of a slender rod; the guide rods are reinforced by cross bars. The guide rods are slender and reinforced by thin cross bars to ensure the structural strength of the guide rods and prevent them from breaking. The guide rods can limit the positions of the pressure plate and the partition in the horizontal direction, playing a limiting role; the slender guide rods maximize the contact area between the side of the partition and the acid liquid, effectively ensuring the effect of pressurized acid absorption.

[0007] Preferably, the partition entrance is arranged on the side of the clamping device body, and a notch is arranged on the guide rod in the clamping device body, and the height of the notch is greater than the thickness of the pressure plate. The notch is arranged on the side of the clamping device body, and the notch can place the pressure plate and the partition inside the clamping device body; the notch on the side of the clamping device body means that the guide rod is arranged with a notch on one side, and the pressure plate and the partition can be placed inside the clamping device body, which plays the role of placing and taking the pressure plate and the partition; therefore, the thickness of the notch is greater than the thickness of the partition and the pressure plate.

[0008] Preferably, the upper baffle is provided with a plurality of mounting holes, in which a plurality of force-applying and tightening members are placed, and the force-applying and tightening members are arranged inside the main body of the clamping device through the mounting holes. The upper baffle is provided with a plurality of mounting holes, in which force-applying and tightening members can be placed, and the force-applying and tightening members play the role of pressing down the pressure plate, and the pressure plate applies a constant pressure to the partition to be tested; the mounting holes are vertical and perpendicular to the pressure plate; the bottom plate is placed horizontally, and the pressure plate and the upper baffle are parallel to the bottom plate; the threads inside the mounting holes are adapted to the force-applying and tightening members, so that the force-applying and tightening members can be pressed down.

[0009] Preferably, the mounting holes are evenly and symmetrically distributed in the upper baffle. Evenly distributed mounting holes can make the force-applying and tightening members evenly distributed on the pressure plate, so that the force received on the pressure plate is relatively uniform, so that the partition to be tested is evenly pressed and the detection accuracy is high.

[0010] Preferably, the bottom surface of the force-applying and tightening member is parallel to the pressure plate, which can ensure that the pressure plate is in a horizontal state without being offset; a larger contact area can reduce the pressure and prevent the pressure at the contact position between the pressure plate and the force-applying and tightening member from being too high, thereby preventing damage.

[0011] As a preferred embodiment, the heights of the guide rods are consistent; the bottom plate and the upper baffle are parallel to each other. The uniform height of the guide rods can ensure the uniform height of the device at all locations, so that the partition to be tested is evenly stressed; the bottom plate and the upper baffle are both horizontal and perpendicular to the guide rods, which also serves to ensure that the partition to be tested is evenly stressed.

[0012] As a preference, the force-applying and tightening members are tightened by a torque wrench. Each force-applying and tightening member is controlled by a torque wrench, and the downward pressure applied is constant at 50 kPa.

[0013] Preferably, the upper end of the force-applying and tightening member is connected to a cylinder, which is fixed inside the main body of the clamping device and vertically fixedly connected to the main body of the clamping device, and the force-applying and tightening member is driven by the cylinder to apply force to the pressure plate. The pressure applied by the cylinder to the force-applying and tightening member is 50 kPa, which can be applied to the force-applying and tightening member at the same time, and the pressure on the pressure plate is simultaneously received by the force-applying and tightening members and transmitted to the partition.

[0014] The beneficial effects of the utility model are as follows: the lead-acid battery separator pressurized acid absorption detection device has a simple structure, and the same force is applied to the pressure plate at the same time through a plurality of force-applying and tightening members, and the pressure is transmitted to the separator to be tested through the pressure plate, so that the pressure received by the separator is uniform, and the test result is highly accurate. The main body of the clamping device plays a limiting role to prevent the pressure plate and the separator placed inside from being offset in position due to the force, and the guide rod is slender, so that the contact area between the separator and the acid liquid is large, and the pressurized acid absorption effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axial side view of the utility model as a whole.

[0016] Figure 2 It is an axial side view of the main body of the clamping device in the utility model.

[0017] Figure 3 It is a schematic diagram of the device included in the utility model.

[0018] Figure 4 It is a schematic diagram of another solution included in the utility model.

[0019] In the figure: 1. Clamping device body; 2. Pressure plate; 3. Partition plate; 4. Force-applying and tightening member; 5. Torque wrench; 6. Mounting hole; 7. Cross bar; 8. Uniform force-applying assembly; 9. Cylinder; 1-1. Upper baffle; 1-2. Guide rod; 1-3. Bottom plate. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Embodiment 1:

[0022] As the instruction manual Figure 1 As shown, a lead-acid battery separator pressurized acid absorption detection device includes a clamping device body 1 with a separator 3 inlet and a uniform force-applying component 8, the clamping device body is a frame structure, the force-applying component includes a pressure plate 2 and four force-applying top tightening members 4 evenly distributed above the pressure plate; the clamping device body includes a bottom plate 1-3 and an upper baffle 1-1, 8 guide rods 1-2 are arranged between the bottom plate and the upper baffle, and the guide rods are reinforced by a cross bar 7; the guide rods are slender rods; the partition inlet is arranged on the side of the clamping device body, and a notch is arranged on the guide rod in the clamping device body, and the height of the notch is greater than the thickness of the pressure plate; four mounting holes 6 are arranged on the upper baffle, and the force-applying top tightening members are arranged inside the clamping device body through the mounting holes; the mounting holes are evenly and symmetrically distributed in the upper baffle; the bottom surface of the force-applying top tightening member is parallel to the pressure plate; the heights of the guide rods are consistent; the bottom plate and the upper baffle are parallel to each other; the force-applying top tightening member applies pressure through a torque wrench 5.

[0023] In a lead-acid battery separator pressurized acid absorption detection device, the clamping device body 1 is adapted to the pressing plate 2, and the pressing plate is pressed by four screws 4. The pressing plate and the partition 3 to be tested are placed in the clamping device body, and the partition is placed directly below the pressing plate. Four screws squeeze the pressing plate from the top of the clamping device body, and the pressure on the pressing plate is transmitted to the partition; the force applied by each screw is 50kpa vertically downward, which is transmitted to the partition through the pressing plate to play the role of pressing the partition. Among them, the size of the partition to be tested is a square of 50mm×50mm, and the size inside the clamping device body is also a square of 50mm×50mm, which is adapted to the partition, so that the partition is fixed inside the clamping device body to avoid displacement and uneven force. After pressing, the device can be fully immersed in 1.28g / cm3 sulfuric acid. After 30 minutes, the clamp is taken out, and the sample to be tested is taken out and weighed to calculate the acid absorption rate. To take out the partition, loosen the screws with a torque wrench 5, and the pressure plate and the partition can be taken out.

[0024] As the instruction manual Figure 2As shown in the figure, the main body 1 of the clamping device is composed of an upper baffle 1-1, a guide rod 1-2 and a bottom plate 1-3 from top to bottom; four mounting holes are arranged on the upper baffle, which are evenly and symmetrically distributed on the upper baffle. The guide rod is in the shape of a slender rod, which plays a role in limiting the position of the pressure plate and the partition placed inside, and limits the movement of the pressure plate in the left and right, front and back directions from the plane. The upper baffle, the bottom plate and the pressure plate are all in the shape of a square, and two guide rods are evenly distributed on each side, for a total of eight. A notch is arranged on the guide rod on one side of the clamping frame device, and the height of the notch is greater than the thickness of the partition 3 and the pressure plate 2, so that the partition and the pressure plate can be placed inside the main body of the clamping device from the outside. The pressure plate and the partition to be tested are placed from the notch, and the partition is placed first, and the partition enters the inside of the device along the guide rod; after the partition is placed, the pressure plate is placed on it, and the pressure plate also enters along the guide rod, so that the internal partition and the pressure plate are aligned as a whole, so that the pressure on each part of the partition is equal. After the test is completed, the screws are loosened using a torque wrench, and the pressure plate and the tested partition can be taken out from the notch of the guide rod. This method is convenient for taking the partition.

[0025] The guide rods 1-2 are shaped like slender rods, and are reinforced by two cross bars between the guide rods. The shape of the slender guide rods can maximize the contact area between the partition and the acid solution, so that the effect of pressurized acid absorption is better. The position of the cross bar is located above the partition to be tested and the pressure plate to prevent the cross bar from covering the partition and affecting the effect of pressurized acid absorption. The material of the guide rod can be transparent organic glass. The transparent guide rod can more clearly see the placement relationship between the partition and the pressure plate, so that the pressure plate is directly above the partition and the surfaces around each partition are located on the same plane.

[0026] The height of the guide rods 1-2 in the device is consistent, and the vertical downward forces applied by the four screws 4 are consistent. The bottom plate 1-3 is placed horizontally, the upper baffle 1-1 is parallel to the bottom plate, and the guide rods are perpendicular to the upper baffle and the bottom plate. The mounting holes are arranged in a vertical direction.

[0027] In the above technical solution, the material of the pressing plate 2 can be transparent organic glass, and the material of the screw 4 can be acid-resistant stainless steel. Because the device needs to be placed in an acid solution together with the partition 3 to be tested, the materials selected are acid-resistant and corrosion-resistant.

[0028] The acid-resistant pressure plate 2 slides in the clamping device body 1 through the guide rod 1-2. The size of the bottom plate 1-3 and the upper baffle 1-1 in the clamping device body is greater than 50mm×50mm and is a square; the thickness of the guide rod is 5mm, then the size of the bottom plate and the upper baffle is 60mm×60mm, and the size of the square formed inside the guide rod and the bottom plate is 50mm×50mm, which is equal to the size of the partition 3 and the pressure plate 2 to be tested, preventing the partition and the pressure plate from shifting in position when receiving the force applied by the screw 4.

[0029] The torque wrench 5 is used to twist the screw 4. According to the calculated torque result, the pressure received by the partition 3 can be equated with the displayed torque value. The torque value can be used to judge the pressure on the partition. This display method is more intuitive and accurate. Compared with only setting one force-applying and tightening member in the center of the device, the four screws can disperse the force, making the force uniform everywhere, and the partition is subjected to the same force everywhere.

[0030] The number of partitions 3 placed in the clamping device body 1 can be adjusted accordingly. The torque value required to be twisted by the torque wrench 5 can be changed according to the number of partitions placed inside, and can be flexibly adjusted, thereby enhancing the applicability and flexibility of the device.

[0031] Embodiment 2:

[0032] As the instruction manual Figure 3 As shown, a lead-acid battery separator pressurized acid absorption detection device includes a clamping device body 1 with a separator 3 inlet and a uniform force-applying component 8, the clamping device body is a frame structure, the force-applying component includes a pressure plate 2 and nine force-applying and tightening members 4 evenly distributed above the pressure plate; the clamping device body includes a bottom plate 1-3 and an upper baffle 1-1, 8 guide rods 1-2 are arranged between the bottom plate and the upper baffle, and the guide rods are reinforced by a cross bar 7; the guide rods are slender rods; the partition inlet is arranged on the side of the clamping device body, and a notch is arranged on the guide rod in the clamping device body, and the height of the notch is greater than the thickness of the pressure plate; nine mounting holes 6 are arranged on the upper baffle, and the force-applying and tightening members are arranged inside the clamping device body through the mounting holes; the mounting holes are evenly and symmetrically distributed in the upper baffle; the bottom surface of the force-applying and tightening member is parallel to the pressure plate; the heights of the guide rods are consistent; the bottom plate and the upper baffle are parallel to each other; the force-applying and tightening member applies pressure through a torque wrench 5.

[0033] In a lead-acid battery separator pressurized acid absorption detection device, a clamping device body 1 is adapted to a pressure plate 2, and the pressure plate is pressed by nine screws 4. The pressure plate and the separator 3 to be tested are placed in the clamping device body, and the separator is placed directly below the pressure plate. Nine screws squeeze the pressure plate from above the clamping device body, and the pressure on the pressure plate is transmitted to the separator; the force applied by each screw is 50kpa vertically downward, which is transmitted to the separator through the pressure plate to play the role of pressing the separator. The distribution of the screws is 3×3 positive row distribution, so that the pressure on the pressure plate is uniform, because the screws are set symmetrically, thereby ensuring that the pressure on the pressure plate is uniform.

[0034] The size of the partition to be tested is a 50mm×50mm square, the size of the interior of the clamping device body is also a 50mm×50mm square, and the size of the pressure plate is also a 50mm×50mm square; the thickness of the guide rod is 3mm, and the size of the pressure plate and the upper baffle is a 56mm×56mm square, so that the guide rod and the pressure plate and the upper baffle form an internal square of 50mm×50mm.

[0035] The screw 4 can be a hexagonal screw, which is easy to turn with a torque wrench 5. The torque wrench is compatible with the hexagonal screw. The length of the hexagonal screw is consistent with the height of the clamping device body 1, so as to avoid the situation where the screw is not long enough and cannot press the partition 3. The size of the hexagonal screw is consistent with the size of the through hole on the upper baffle 1-1, and the thread is compatible. The bottom edge of the hexagonal screw is a smooth horizontal surface, parallel to the pressure plate, so that the pressure plate is subjected to vertical downward pressure, avoiding the tilt of the pressure plate position.

[0036] Compared with four force-applying and tightening members, nine force-applying and tightening members make the pressure received by the pressure plate more uniform and dispersed, so that the pressure received by the partition is constant.

[0037] The guide rods 1-2 can be provided with scale lines, which can remind the user of the number of partitions that have been put in, and show the height of the partition stacking, thereby reducing the user's workload. Each grid on the scale line is the height of one partition, and can also be set to the height of five partitions.

[0038] The guide rods 1-2 are shaped like slender rods, and are reinforced by two cross bars between the guide rods. The shape of the slender guide rods can maximize the contact area between the partition and the acid solution, so that the effect of pressurized acid absorption is better. The position of the cross bar is located above the partition to be tested and the pressure plate to prevent the cross bar from covering the partition and affecting the effect of pressurized acid absorption. The material of the guide rod can be transparent organic glass. The transparent guide rod can more clearly see the placement relationship between the partition and the pressure plate, so that the pressure plate is directly above the partition and the surfaces around each partition are located on the same plane.

[0039] Embodiment 3:

[0040] As the instruction manual Figure 4As shown, a lead-acid battery separator pressure acid absorption detection device includes a clamping device body 1 with a separator 3 inlet and a uniform force-applying component 8, the clamping device body is a frame structure, the force-applying component includes a pressure plate 2 and four force-applying top tightening members 4 evenly distributed above the pressure plate; the clamping device body includes a bottom plate 1-3 and an upper baffle 1-1, 8 guide rods 1-2 are arranged between the bottom plate and the upper baffle, and the guide rods are reinforced by a cross bar 7; the guide rods are slender rods; the separator inlet is arranged on the side of the clamping device body, and A notch is provided on the guide rod in the main body of the clamping device, and the height of the notch is greater than the thickness of the pressure plate; four mounting holes 6 are provided on the upper baffle plate, and the force-applying tightening member is arranged inside the main body of the clamping device through the mounting holes; the mounting holes are evenly and symmetrically distributed in the upper baffle plate; the bottom surface of the force-applying tightening member is parallel to the pressure plate; the heights of the guide rods are consistent; the bottom plate and the upper baffle plate are parallel to each other; the upper end of the force-applying tightening member is connected to the cylinder 9, which is fixed inside the main body of the clamping device and vertically fixedly connected to the main body of the clamping device, and the force-applying tightening member is driven by the cylinder to apply force to the pressure plate.

[0041] As the instruction manual Figure 4 As shown in the figure, in a lead-acid battery separator pressurized acid absorption detection device, the clamping device body 1 is adapted to the pressing plate 2, and the pressing plate is pressed by a number of screws 4. The pressing plate and the partition 3 to be tested are placed in the clamping device body, and the partition is placed directly below the pressing plate. Four screws squeeze the pressing plate from the top of the clamping device body, and the pressure on the pressing plate is transmitted to the partition; the force applied by each screw is 50kpa vertically downward, which is transmitted to the partition through the pressing plate to play the role of pressing the partition. Among them, the size of the partition to be tested is a square of 50mm×50mm, and the size inside the clamping device body is also a square of 50mm×50mm, which is adapted to the partition, so that the partition is fixed inside the clamping device body to avoid displacement and uneven force. After pressing, the device can be fully immersed in 1.28g / cm3 sulfuric acid, and the clamp is taken out after 30 minutes, and the sample to be tested is taken out and weighed to calculate the acid absorption rate. The screw is controlled by a cylinder, and the cylinder applies a pressure of 50kpa to the screw.

[0042] Using the cylinder as the power eliminates the need to tighten the screws with a torque wrench, thus simplifying the operation methods and experimental steps; moreover, each screw can be moved in the vertical direction simultaneously through the cylinder, thus saving assembly time.

[0043] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A lead-acid battery separator pressure acid absorption detection device, characterized in that: It comprises a clamping device body (1) with a partition inlet and a uniform force-applying component (8), wherein the clamping device body is a frame-type structure, and the force-applying component comprises a pressure plate (2) and a plurality of force-applying tightening members (4) uniformly distributed above the pressure plate.

2. The lead-acid battery separator pressurized acid absorption detection device according to claim 1, characterized in that: The clamping device body comprises a bottom plate (1-3) and an upper baffle plate (1-1), a plurality of guide rods (1-2) are arranged between the bottom plate and the upper baffle plate, and the guide rods are reinforced by cross rods (7).

3. The lead-acid battery separator pressurized acid absorption detection device according to claim 2, characterized in that: The guide rod (1-2) is a slender rod.

4. The lead-acid battery separator pressurized acid absorption detection device according to claim 1, characterized in that: The partition inlet is arranged on the side of the clamping device body, and the height of the partition inlet is greater than the thickness of the pressing plate (2).

5. The lead-acid battery separator pressurized acid absorption detection device according to claim 2, characterized in that: A plurality of mounting holes (6) are provided on the upper baffle plate (1-1), and the force-applying and tightening member (4) passes through the mounting holes and is arranged inside the clamping device body (1).

6. The lead-acid battery separator pressurized acid absorption detection device according to claim 5, characterized in that: The mounting holes (6) are evenly and symmetrically distributed in the upper baffle (1-1).

7. The lead-acid battery separator pressurized acid absorption detection device according to claim 1, characterized in that: The bottom surface of the force-applying and tightening member (4) is parallel to the pressing plate (2).

8. The lead-acid battery separator pressurized acid absorption detection device according to claim 2, characterized in that: The heights of the guide rods (1-2) are consistent; The bottom plate (1-3) and the upper baffle plate (1-1) are parallel to each other.

9. The lead-acid battery separator pressurized acid absorption detection device according to any one of claims 1 to 8, characterized in that: The force-applying tightening member (4) applies pressure via a torque wrench (5).

10. The lead-acid battery separator pressurized acid absorption detection device according to any one of claims 1 to 8, characterized in that: The upper end of the force-applying and tightening member (4) is connected to a cylinder (9), which is fixed inside the clamping device body (1) and vertically fixedly connected to the clamping device body. The force-applying and tightening member is driven by the cylinder to apply force to the pressure plate (2).

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