CN219104656U - Battery slurry sieving performance testing device - Google Patents

Abstract

The utility model belongs to the technical field of battery testing, and discloses a battery slurry sieving performance testing device which comprises a light source, a filter element, a filter container, a first detection element, a second detection element and a timer, wherein the light source is arranged on the filter element; the light source can emit light, the filter element is arranged on the light emitting side of the light source and is opposite to the light source, and the liquid to be measured can be poured into the filter element for filtering; the filter container is detachably arranged below the filter element along the first direction and is used for containing filtered liquid to be tested; the first detection piece is arranged at the bottom of the filter container along the first direction and is used for detecting the weight of the filter container; the second detection piece is arranged below the filtering container along the first direction and is used for detecting the light intensity of the light rays transmitted through the filtering piece; the timer is used for timing. The structure can improve the accuracy of the slurry filtering performance test and the test efficiency.

Description

Battery slurry sieving performance testing device

Technical Field

The utility model relates to the technical field of battery testing, in particular to a battery slurry sieving performance testing device.

Background

With the continuous development of new energy industry, the application and performance of the battery are also more and more concerned, and the key structure of the battery is positive and negative pole pieces, and the quality of the battery has a remarkable influence on the quality of the battery. In the manufacturing process of the anode and cathode pole pieces, impurities or solid materials in the slurry are not completely dispersed, so that the slurry contains solid aggregates or colloidal aggregates with larger volume, the quality of the slurry cannot meet the requirement, the anode and cathode slurry is required to be filtered to remove particles, the problem that the slurry cannot be filtered due to the blocking of a filter screen occurs in the slurry filtering production, the sieving performance of the slurry is required to be evaluated, the standard is lacking in the slurry filtering performance test at the present stage, and the test data has larger error and is difficult to become an ideal judgment standard for judging the slurry filtering performance.

Prior art, for example, early patent CN217156206U, discloses a device for evaluating the sieving performance of slurry, and the time required for the slurry to be tested to reach a preset volume after filtration is measured by using a timer, so that the filtering performance of the slurry can be quantitatively represented, meanwhile, the filter screen is fixed on the blanking member through the fixing member, and the fixing member can be directly released from the blanking member to be taken down when being replaced, so that the replacement time of the filter screen is reduced, and the device is convenient to clean and has high testing efficiency. However, since the slurry has viscosity, the slurry which finally participates in the test cannot be the same as the preset volume by taking out the preset volume for the test, which causes errors, and further, the test data have errors.

Therefore, there is a need to design a device for testing sieving performance of battery slurry to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a battery slurry sieving performance testing device which can improve the accuracy of slurry filtering performance testing and improve the testing efficiency.

To achieve the purpose, the utility model adopts the following technical scheme:

battery slurry sieving performance testing arrangement includes:

the light source can emit light;

the filter piece is arranged on the light-emitting side of the light source and is opposite to the light source, and the liquid to be measured can be poured into the filter piece for filtering;

the filtering container is arranged below the filtering piece along the first direction and is used for containing the filtered liquid to be tested;

a first detecting member provided at a bottom of the filter container along the first direction, the first detecting member being configured to detect a weight of the filter container;

a second detecting member disposed below the filter container in the first direction, the second detecting member being configured to detect a light intensity transmitted through the filter member; and

and the timer is used for timing.

Optionally, the filter element has a funnel-shaped structure, and a filter screen is arranged at the bottom of the filter element.

Optionally, the cross section of the filtering container is U-shaped, a side of the filtering piece facing the filtering piece is provided with an opening end face of the filtering container, and the shortest distance between the filtering screen and the first detecting piece along the first direction is smaller than the shortest distance between the opening end face of the filtering container and the first detecting piece along the first direction.

Optionally, the material of the filter element and the filter container is a corrosion resistant material.

Optionally, two first detecting pieces are provided, and the two first detecting pieces are respectively arranged at two sides of the bottom of the filtering container along a second direction, wherein the second direction is perpendicular to the first direction; the light passing through the filter element passes through the space between the two first detection elements and can be detected by the second detection elements.

Optionally, the first detecting element is a weight sensor.

Optionally, the second detecting element is a light intensity sensor.

Optionally, the light source is a uniform area light source.

Optionally, the device for testing sieving performance of battery slurry further comprises a fixing piece, wherein an opening is formed in a side wall of the fixing piece, which is close to one end of the light source; the filter container, the first detecting member and the second detecting member are all arranged in the fixing member, and the filter member is connected with the side wall.

Optionally, the dimension of the opening in the second direction is larger than the dimension of the bottom of the filter element in the second direction, and the second direction is perpendicular to the first direction.

The utility model has the beneficial effects that:

the utility model provides a battery slurry sieving performance testing device, which is characterized in that the light intensity of light rays of a filtering piece is detected by arranging a second detecting piece, the light intensity of the filtering piece before and after slurry filtering is compared to obtain the filtering rate of the slurry, the time for filtering a certain weight of slurry is calculated, the filtering rate of the slurry is obtained by the ratio of the weight to the time, the filtering performance of the slurry is evaluated by the filtering rate and the filtering rate, the accurate test of the filtering performance of the slurry can be realized, and the testing precision and the testing efficiency are improved.

Drawings

Fig. 1 is a schematic structural cross-section of a battery slurry sieving performance testing device according to an embodiment of the present utility model.

In the figure:

10. a light source; 11. a light emitting side; 20. a filter; 21. a filter screen; 30. a filtration vessel; 31. an open end face of the filter container; 40. a first detecting member; 50. a second detecting member; 60. a fixing member; 61. a sidewall; 62. an opening.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present embodiment provides a battery paste sieving performance testing apparatus, as shown in fig. 1, which includes a light source 10, a filter 20, a filter container 30, a first detecting member 40, a second detecting member 50, and a timer. The structure can improve the accuracy of the slurry filtering performance test and the test efficiency. In this embodiment, the first direction is the Y direction in fig. 1, the second direction is the X direction in fig. 1, and the X direction is perpendicular to the Y direction.

Specifically, the light source 10 emits light, the filter 20 is disposed on the light emitting side 11 of the light source 10 and opposite to the light source 10, the filter 20 is used for filtering a liquid to be measured (the liquid to be measured in this embodiment is slurry, hereinafter described as slurry), the filter container 30 is detachably disposed below the filter 20 along the Y direction, and the filter container 30 is used for collecting the filtered slurry; the first detecting member 40 is disposed at the bottom of the filter container 30 in the Y direction, and the second detecting member 50 is disposed below the filter container 30 in the Y direction; the first detecting member 40 is capable of weighing the filter capsule 30; the second detecting member 50 is for detecting the intensity of the light transmitted through the filter member 20; the timer is used for timing.

Through the above structure, when the slurry filtering test is performed, the slurry is not poured first, the filtering container 30 is taken out, the light source 10 is turned on, at this time, the second detecting member 50 can detect the light intensity of the light transmitted by the current filtering member 20, and the slurry is poured into the filtering member 20 for filtering after the filtering container 30 is placed. The weight of the filter container 30 is detected to a first preset weight value by the first detecting member 40, the timer starts to count until the weight of the filter container 30 reaches a second preset weight value, and the timer stops, at this time, the filter member 20 is rinsed by deionized water, so that the slurry on the filter member 20 is filtered.

It should be noted that, the first preset weight value and the second preset weight value in the present application may be set according to actual needs.

After the filter element 20 is completely filtered, the filter container 30 is taken out, the light intensity of the light transmitted by the filter element 20 at the moment is detected and recorded by the second detecting element 50, the filtering rate can be obtained through the comparison of the front and back light intensities, namely, the filtering performance test of the slurry is carried out through the size of the shading area on the front and back filter element 20, and the filtering rate can be obtained through the ratio of the filtering weight difference value to the time. According to the battery slurry sieving performance testing device, through the operation, namely by adopting calculation of light intensity, accurate testing of slurry filtering performance can be achieved, and testing precision and testing efficiency are improved.

Alternatively, the power of the light source 10 is constant, so that the light source 10 is consistent. Preferably, the light source 10 is a uniform area light source, so that the light intensity irradiated on each place of the filter 20 is uniform, thereby ensuring the testing accuracy of the second detecting member 50.

In this embodiment, as shown in fig. 1, the filter 20 has a funnel-shaped structure. The filter screen 21 is arranged at the bottom of the filter element 20, and the filter element 20 is funnel-shaped, so that slurry can be placed in the filter element 20, and then is filtered slowly through the filter screen 21 at the bottom, so that the slurry cannot flow out, the operation times are reduced, and time and labor are saved.

Further, as shown in fig. 1, the cross section of the filter container 30 (in this embodiment, the cross section of the filter container 30 is a cross section along the XY plane) is U-shaped, and a side of the filter container 30 facing the filter element 20 has a filter container opening end surface 31, and the shortest distance between the filter screen 21 and the first detecting element 40 along the Y direction is smaller than the shortest distance between the filter container opening end surface 31 and the first detecting element 40 along the Y direction. The above arrangement prevents slurry from splashing out of the filter vessel 30 during the filtering process so that slurry can only enter the filter vessel 30 after passing through the filter element 20.

Optionally, the materials of filter element 20 and filter vessel 30 are both corrosion resistant materials, avoiding corrosion of filter element 20 and filter vessel 30 by the corrosive materials within the slurry. Preferably, the filter member 20 is made of a material having good light transmittance so that the second detecting member 50 can detect light intensity well.

In this embodiment, as shown in fig. 1, the number of the first detecting members 40 is two, and the two first detecting members 40 are respectively disposed at two sides of the bottom of the filtering container 30 in the X direction; the light transmitted through the filter element 20 passes through the space between the two first detecting elements 40 and can be detected by the second detecting element 50.

Specifically, the light source 10 has a first projection in the Y direction, the filter 20 has a second projection in the Y direction, the two first detecting members 40 have a third projection in the Y direction, and the second detecting member 50 has a fourth projection in the Y direction; the third projection and the second projection are completely non-overlapping, the second projection completely covers the first projection, and the fourth projection completely covers the second projection. Thus, the first detecting element 40 can not shade the light intensity in the filter element 20, so that the second detecting element 50 is ensured to work well, and the testing value is accurate.

Optionally, the first detecting member 40 is a weight sensor, which meets the above requirements, and has a simple structure and low cost.

Further, the second detecting element 50 is a light intensity sensor, which meets the requirements, and has simple structure, low cost and high accuracy.

In this embodiment, as shown in fig. 1, the device for testing the sieving performance of battery slurry further includes a fixing member 60, and the fixing member 60 is provided with an opening 62 on a sidewall 61 near one end of the light source 10, and the filtering container 30, the first detecting member 40 and the second detecting member 50 are all disposed in the fixing member 60. Specifically, the second detecting element 50 is disposed at the bottom of the fixing element 60 along the Y direction, the first detecting element 40 is disposed above the second detecting element 50 and fixed to the inner wall of the fixing element 60 along the X direction, and the first detecting element 40 is further abutted against the filtering container 30, and the filtering container 30 is disposed on the first detecting element 40, so as to facilitate the taking and placing of the filtering container 30. And the filter member 20 is disposed above the filter container 30 and coupled to the sidewall 61 of the fixing member 60.

Alternatively, the fixing member 60 is a hollow structure or a frame structure, and those skilled in the art can select the fixing member according to actual needs, which is not particularly limited herein.

Further, the size of the opening 62 along the X direction is greater than the size of the bottom of the filter 20 along the X direction (i.e. the size of the filter 21 along the X direction), so the side wall 61 can not shade the light 11 emitted from the light source 10, thereby ensuring that the second detecting element 50 works well and the test value is accurate. Specifically, the side wall 61 has a fifth projection in the Y direction; the fifth projection and the second projection do not overlap at all; by the arrangement, the side wall 61 can be prevented from shielding the light source 10 from irradiating the filter element 20, and the second detection element 50 is good in working state and accurate in test value.

Preferably, as shown in fig. 1, the filter 20 is detachably connected to the side wall 61 of the fixing member 60, so that the battery paste sieving performance testing apparatus can be replaced if the filter 20 is damaged after a period of use, to ensure the testing accuracy of the battery paste sieving performance testing apparatus. Specifically, in the present embodiment, the filter 20 and the side wall 61 are connected by bolts to achieve detachable connection of the two.

Further, the battery paste sieving performance testing device further comprises a control mechanism, and the timer, the first detecting member 40 and the second detecting member 50 are all electrically connected to the control mechanism. Specifically, the control mechanism is a programmable logic controller (ProgrammableLogicController, PLC), not shown in the figure, the weight signal and the light intensity signal are transmitted to the PLC, the PLC controls the first detecting member 40 and the second detecting member 50 to detect, and controls the timer to be opened and run at the same time when the filtering starts, and the timer is closed when the weight value reaches a preset weight value. The control logic of the PLC is well known to those skilled in the art and will not be described in detail herein.

The following describes the operation of the battery paste sieving performance testing apparatus in this example.

Firstly, taking out the filter container 30 from the battery slurry sieving performance testing device, turning on the light source 10, and recording the light intensity Q1 through the second detection piece 50; the filter vessel 30 is then returned to the battery slurry sieving performance testing apparatus and slurry introduction into the filter element 20 is started;

then, the control mechanism controls the first detecting member 40 to start detecting the weight of the filtering container 30 until the weight is detected to reach a first preset weight value m1, the control mechanism controls the timer to start timing, and when the weight is detected to reach a second preset weight value m2, the timer stops counting and records the filtering time t; washing the filter element 20 with deionized water to accelerate the filtration of the slurry on the filter element 20;

thirdly, taking the filter container 30 out of the battery slurry sieving performance testing device, and controlling the second detecting piece 50 by the control mechanism to record the light intensity Q2;

finally, the filtration rate=q2/Q1 and the filtration rate= (m 2-m 1)/t are calculated, and the filtration effect of the slurry can be obtained through the filtration rate and the filtration rate.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The battery slurry sieving performance testing device is characterized by comprising:

a light source (10), the light source (10) being capable of emitting light;

the filter piece (20) is arranged on the light-emitting side (11) of the light source (10) and is opposite to the light source (10), and the liquid to be measured can be poured into the filter piece (20) for filtering;

the filter container (30) is detachably arranged below the filter element (20) along the first direction, and the filter container (30) is used for containing the filtered liquid to be tested;

a first detecting member (40) provided at the bottom of the filter container (30) along the first direction, the first detecting member (40) being configured to detect the weight of the filter container (30);

a second detecting member (50) disposed below the filter container (30) along the first direction, the second detecting member (50) being configured to detect a light intensity of the light transmitted through the filter member (20); and

a timer for counting time.

2. The battery paste sieving performance testing device according to claim 1, wherein the filter member (20) has a funnel-shaped structure, and a filter screen (21) is provided at the bottom of the filter member (20).

3. The battery paste sieving performance testing apparatus according to claim 2, wherein the cross section of the filter container (30) is U-shaped, a side of the filter container (30) facing the filter member (20) has a filter container opening end surface (31), and a shortest distance between the filter screen (21) and the first detecting member (40) in the first direction is smaller than a shortest distance between the filter container opening end surface (31) and the first detecting member (40) in the first direction.

4. The battery slurry sieving performance testing apparatus according to claim 1, wherein the materials of the filter member (20) and the filter container (30) are both corrosion-resistant materials.

5. The battery paste sieving performance testing device according to claim 1, wherein two first detecting pieces (40) are provided, and two first detecting pieces (40) are respectively provided at both sides of the bottom of the filter container (30) along a second direction, the second direction being perpendicular to the first direction; the light transmitted through the filter element (20) passes through the space between the two first detection elements (40) and can be detected by the second detection elements (50).

6. Battery paste sieving performance testing apparatus according to any of claims 1-5, wherein said first detection member (40) is a weight sensor.

7. The battery paste sieving performance testing apparatus as claimed in any one of claims 1 to 5, wherein the second detecting member (50) is a light intensity sensor.

8. The battery paste sieving performance testing apparatus according to any one of claims 1 to 5, wherein the light source (10) is a uniform surface light source.

9. The battery paste screening performance testing apparatus according to any one of claims 1 to 5, further comprising a fixing member (60), wherein an opening (62) is provided in a side wall (61) of the fixing member (60) near one end of the light source (10); the filter container (30), the first detection piece (40) and the second detection piece (50) are all arranged in the fixing piece (60), and the filter piece (20) is connected with the side wall (61).

10. The battery paste sieving performance testing apparatus of claim 9, wherein a dimension of said opening (62) in a second direction is greater than a dimension of a bottom of said filter member (20) in said second direction, said second direction being perpendicular to said first direction.

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