Device for measuring content of zinc paste binder for alkaline manganese battery

Abstract

The utility model discloses a device for measuring the content of a zinc paste binder for an alkaline manganese battery, which comprises a bottom plate, a box body is arranged on the upper side of the bottom plate, an ultrasonic chamber is arranged on the upper side of the interior of the box body, a sealing plate is arranged at the bottom of the ultrasonic chamber, a vacuum chamber is arranged on the lower side of the sealing plate, and a pressure sensor is arranged on the lower side of the vacuum chamber. A plurality of first containers are arranged in the ultrasonic chamber, an ultrasonic generator is arranged on the inner wall of the ultrasonic chamber, a bottom plate is arranged on the lower side of the vacuum chamber, a KOH solution with a specific PH value is used, polyacrylic acid in zinc paste can effectively form a gel layer which is expanded by several times, interference of zinc powder can be eliminated by comparing the difference value of the volume of the gel layer, and the stability of the zinc paste is improved. The sodium polyacrylate content of the zinc paste in the battery can be accurately quantified; the total carbon content can be accurately measured through a carbon-sulfur analyzer, and then the content of the calamine cream carbomer in the battery can be accurately measured according to the result of the sodium polyacrylate.

Description

Technical Field

[0001] The utility model relates to the field of alkaline manganese batteries, and particularly to a device for measuring the content of zinc paste binder in alkaline manganese batteries. Background Art

[0002] Alkaline zinc-manganese batteries are by far the most widely used civilian battery products. As an important component material for the preparation of alkaline zinc-manganese batteries, the performance of zinc paste plays a key role in the discharge capacity and service life of alkaline batteries. The zinc paste binder is one of the key materials for preparing the negative electrode zinc paste in alkaline manganese batteries, which can make zinc powder disperse evenly during the preparation of zinc paste and can be fixed without swaying after being injected into the battery case. Different contents of sodium polyacrylate will have a great impact on the state of zinc paste, and directly affect the injection of zinc paste on the production line, affecting production efficiency. The dosage of zinc paste binder accounts for a large proportion of the battery, and the optimization of its cost is of great significance for enhancing the market competitiveness of the battery. The zinc paste binder in alkaline manganese batteries contains two components, one is carbomer, and the other is sodium polyacrylate. Due to the similarity of their chemical structures, conventional methods cannot separately distinguish the respective contents of the two binders. The utility model proposes a device for measuring the content of zinc paste binder in alkaline manganese batteries to separately measure the respective contents of the two binders in the battery zinc paste. Summary of the Utility Model

[0003] In order to overcome the above defects in the prior art, the utility model provides a device for measuring the content of zinc paste binder in alkaline manganese batteries. By using a KOH solution with a specific pH value, a gel layer with several times the expansion can be effectively formed from sodium polyacrylate in the zinc paste. By comparing the difference in the volume of the gel layer, the interference of zinc powder can be excluded, and the content of sodium polyacrylate in the zinc paste in the battery can be accurately quantified. Through a carbon-sulfur analyzer, the total carbon content can be accurately measured, and then according to the result of sodium polyacrylate, the content of carbomer in the zinc paste in the battery can be accurately measured.

[0004] Technical Solution

[0005] A device for measuring the content of zinc paste binder in alkaline manganese batteries includes a bottom plate. A box body is arranged on the upper side of the bottom plate. An ultrasonic chamber is arranged on the upper side inside the box body. A sealing plate is arranged at the bottom of the ultrasonic chamber. A vacuum chamber is arranged on the lower side of the sealing plate. Several first containers are arranged in the ultrasonic chamber. An ultrasonic generator is arranged on the inner wall of the ultrasonic chamber. The bottom plate is arranged on the lower side of the vacuum chamber. A heating plate is arranged on the lower side of the bottom plate. A second container is placed on the upper side of the bottom plate.

[0006] Furthermore, a first mounting plate is fixedly arranged on the outer wall of the box body. A storage box is placed on the first mounting plate. A pump body is arranged in the storage box. A pipeline is connected to the pump body.

[0007] Further, a hose is connected to the pipeline, and the other end of the hose is connected to a straw for sucking the liquid in the first container.

[0008] Further, scale values are also provided on the first container.

[0009] Further, a second mounting plate is fixedly provided on the outer wall of the box body, and a carbon-sulfur analyzer is provided on the second mounting plate.

[0010] Further, a limiting clamping plate for fixing the first container is provided on the sealing plate, and a top cover is provided on the upper side of the ultrasonic chamber.

[0011] Further, an electronic scale is also provided on the bottom plate.

[0012] Further, a side door is provided on the side wall of the vacuum chamber.

[0013] Further, the vacuum chamber is connected to a vacuum latex tube, and the vacuum latex tube is connected to a diaphragm pump.

[0014] Further, a vacuum gauge is also connected to the vacuum chamber.

[0015] Beneficial effects

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] By using a KOH solution with a specific pH value, a gel layer that expands several times can be effectively formed on the polyacrylic acid in the zinc paste. By comparing the difference in the volume of the gel layer, the interference of zinc powder can be excluded, and the content of sodium polyacrylate in the zinc paste in the battery can be accurately quantified; through the carbon-sulfur analyzer, the total carbon content can be accurately measured, and based on the result of sodium polyacrylate, the content of carbomer in the zinc paste in the battery can be accurately measured. Description of the drawings

[0018] Figure 1 It is a schematic structural diagram of a device for measuring the content of zinc paste binder in an alkaline manganese battery according to the present utility model.

[0019] Reference numerals in the drawings

[0020] Bottom plate 1, vacuum latex tube 2, diaphragm pump 3, heating plate 4, second container 5, bottom plate 6, side door 7, electronic scale 8, pump body 9, first mounting plate 10, storage box 11, pipeline 12, hose 13, top cover 14, straw 15, limiting clamping plate 16, sealing plate 17, ultrasonic chamber 18, first container 19, scale value 20, ultrasonic generator 21, box body 22, carbon-sulfur analyzer 23, second mounting plate 24, vacuum chamber 25. Detailed implementation manners

[0021] To better illustrate and explain the content of the present utility model, the following will be described in conjunction with the accompanying drawings and implementation examples:

[0022] There is Figure 1 As shown, the present utility model discloses a device for measuring the content of zinc paste binder in an alkaline manganese battery, including a bottom plate 1. On the upper side of the bottom plate 1, there is a box body 22. Inside the upper side of the box body 22, there is an ultrasonic chamber 18. At the bottom of the ultrasonic chamber 18, there is a sealing plate 17. Below the sealing plate 17, there is a vacuum chamber 25. Inside the ultrasonic chamber 18, there are several first containers 19. On the inner wall of the ultrasonic chamber 18, there is an ultrasonic generator 21. Below the vacuum chamber 25, there is a bottom plate 6. Below the bottom plate 6, there is a heating plate 4. On the upper side of the bottom plate 6, a second container 5 is placed.

[0023] Furthermore, on the outer wall of the box body 22, there is a first mounting plate 10 fixedly installed. On the first mounting plate 10, there is a storage box 11. Inside the storage box 11, there is a pump body 9. The pump body 9 is connected with a pipeline 12.

[0024] Furthermore, the pipeline 12 is connected with a flexible hose 13. The other end of the flexible hose 13 is connected with a straw 15 for sucking the liquid in the first container 19.

[0025] Furthermore, the first container 19 is also provided with a scale value 20.

[0026] Furthermore, on the outer wall of the box body 22, there is also a second mounting plate 24 fixedly installed. On the second mounting plate 24, there is a carbon sulfur analyzer 23.

[0027] Furthermore, on the sealing plate 17, there is a limiting clamping plate 16 for fixing the first container 19. On the upper side of the ultrasonic chamber 18, there is a top cover 14.

[0028] Furthermore, on the bottom plate 1, there is also an electronic scale 8.

[0029] Furthermore, on the side wall of the vacuum chamber 25, there is a side door 7.

[0030] Furthermore, the vacuum chamber 25 is connected with a vacuum latex tube 2. The vacuum latex tube 2 is connected with a diaphragm pump 3.

[0031] Furthermore, the vacuum chamber 25 is also connected with a vacuum gauge (not shown).

[0032] Specifically, three first containers 19 are selected, denoted as A, B, and C respectively. Three batteries a, b, and c with different contents of zinc paste binder are selected. Among them, the contents of sodium polyacrylate in the zinc paste of a and b are d% and e% respectively, and c is a battery with an unknown content of zinc paste binder;

[0033] Dissect batteries a, b, and c respectively, and take out the zinc paste m of the same mass and place them in A, B, and C respectively;

[0034] Add the same volume of KOH solution with a content of 40% - 49% to A, B, and C respectively. Turn on the ultrasonic generator 21, after ultrasonic treatment for 5 minutes, let it stand. Start the pump body 9, and suck out most of the solution through the suction pipe 15. Keep the solution 1 ml above the zinc paste, and repeat this operation twice;

[0035] In addition, prepare a KOH solution (pH is 10 - 12), add an equal amount to A, B, and C. Turn on the ultrasonic generator 21, after ultrasonic treatment for 5 minutes, let it stand. Suck out most of the solution through the suction pipe 15. Keep the solution 1 ml above the gel layer, and repeat this operation twice;

[0036] Add the same volume of KOH solution (pH is 10 - 12) again, add an equal amount to A, B, and C. Turn on the ultrasonic generator 21, after ultrasonic treatment for 5 minutes, let it stand. Observe the height of the gel layer formed in A, B, and C, record the height value through the scale value 20, and then calculate the volume of the gel layer according to the inner diameter of the first container 19. Record the values as Va, Vb, and Vc respectively;

[0037] For the zinc paste of the same mass, the following relationship exists between the volume of the formed gel layer and the content of sodium polyacrylate:

[0038]

[0039] Deduce the content of sodium polyacrylate in the zinc paste of battery c:

[0040] Dissect battery c again, take out the zinc paste m on the second container 5, weigh the second container 5 with the electronic scale 8, and get the mass as m1. Then place the second container 5 in the vacuum chamber 25, close the side door 7, and start the diaphragm pump 3 to pump vacuum until the vacuum gauge index is -0.08 Mpa;

[0041] At the same time, start the heating plate 4 to heat the vacuum chamber 25 to 50 °C and keep it for 4 hours;

[0042] Turn off the heating, let it cool to room temperature, restore to normal pressure, take out the zinc paste in the second container 5, and weigh it again, and record it as m1 - 1 respectively.

[0043] Send the above zinc paste to the carbon and sulfur analyzer 23 for testing, test the carbon content, and the result is i%.

[0044] The following formula exists for the carbon content in the binder of the zinc paste:

[0045] For battery c, the carbon content in its zinc paste is:

[0046] The carbon content of the binder in the zinc paste consists of carbomer and sodium polyacrylate. The carbon contents contributed by the two components are inconsistent, and there is the following relationship. Let the carbomer content of battery c be L% respectively:

[0047] The theoretical carbon content of battery c: ic% = 0.383f% + 0.5L%

[0048] Derive the carbomer content:

[0049] Therefore, it is derived again that the contents of the two components of the battery zinc paste binder are:

[0050] The content of sodium polyacrylate:

[0051] The content of carbomer:

[0052] Select 40% - 49% KOH solution to soak and wash multiple times to remove insoluble solid impurities other than the zinc paste to prevent affecting the final volume reading;

[0053] Select KOH solution with a pH of 10 - 12 so that sodium polyacrylate has a sufficiently large swelling rate at this pH value to obtain an effective gel layer reading;

[0054] Select vacuum drying treatment to remove the moisture in the zinc paste and at the same time avoid the carbon in the zinc paste being affected by air and increasing.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the technical solutions of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. A device for measuring the binder content of zinc paste for alkaline manganese battery, characterized in that: The invention comprises a bottom plate (1), a box body (22) is arranged on the upper side of the bottom plate (1), an ultrasonic chamber (18) is arranged on the upper side of the box body (22), a sealing plate (17) is arranged at the bottom of the ultrasonic chamber (18), a vacuum chamber (25) is arranged on the lower side of the sealing plate (17), a plurality of first containers (19) are arranged in the ultrasonic chamber (18), an ultrasonic generator (21) is arranged on the inner wall of the ultrasonic chamber (18), a bottom plate is arranged on the lower side of the vacuum chamber (25), a heating plate (4) is arranged on the lower side of the bottom plate, and a second container (5) is placed on the upper side of the bottom plate.

2. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 1, characterized in that: A first mounting plate (10) is fixedly provided on the outer wall of the box body (22), a storage box (11) is placed on the first mounting plate (10), a pump body (9) is arranged in the storage box (11), and a pipeline (12) is connected to the pump body (9).

3. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 2, characterized in that: The pipeline (12) is connected to a hose (13), and the other end of the hose (13) is connected to a straw (15) for extracting liquid from the first container (19).

4. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 3, characterized in that: The first container (19) is also provided with scale values ​​(20).

5. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 4, characterized in that: A second mounting plate (24) is also fixedly provided on the outer wall of the box body (22), and a carbon-sulfur analyzer (23) is arranged on the second mounting plate (24).

6. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 5, characterized in that: A limiting clamp (16) for fixing the first container (19) is arranged on the sealing plate (17), and a top cover (14) is arranged on the upper side of the ultrasonic chamber (18).

7. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 6, characterized in that: An electronic scale (8) is also provided on the bottom plate (1).

8. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 7, characterized in that: A side door (7) is provided on the side wall of the vacuum chamber (25).

9. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 8, characterized in that: The vacuum chamber (25) is connected to a vacuum latex tube (2), and the vacuum latex tube (2) is connected to a diaphragm pump (3).

10. The device for measuring the binder content of zinc paste for alkaline manganese battery according to claim 9, characterized in that: The vacuum chamber (25) is also connected to a vacuum gauge.

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