CN211097677U - Get rid of device of lithium cell thick liquids bubble - Google Patents
Get rid of device of lithium cell thick liquids bubble Download PDFInfo
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- CN211097677U CN211097677U CN201921614780.3U CN201921614780U CN211097677U CN 211097677 U CN211097677 U CN 211097677U CN 201921614780 U CN201921614780 U CN 201921614780U CN 211097677 U CN211097677 U CN 211097677U
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Abstract
The utility model discloses a device for removing slurry bubbles of a lithium battery, which comprises a slurry storage tank (1) and a peristaltic pump (5); the top of the slurry storage tank is provided with a motor (22) and a vacuum pump (15); the air inlet of the vacuum pump is communicated with the inside of the slurry storage tank; an output shaft at the bottom of the motor is connected with the top of the stirring rod (20); a plurality of stirring paddles (21) are distributed on the stirring rod; one end of a peristaltic pump tube (46) of the peristaltic pump is communicated with the lower part of the left side of the slurry storage tank, and the other end of the peristaltic pump tube is communicated with the left side of the hollow transparent detection interface container (10); the right side of the detection interface container is communicated with the inner space of the slurry storage tank through a return pipeline (45). The utility model discloses a get rid of device of lithium battery slurry bubble can effectively get rid of the bubble in the battery slurry, can also carry out effectual management and control to the bubble content in the battery slurry simultaneously, observes the bubble and gets rid of actual effect, guarantees the battery slurry quality.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a get rid of device of lithium cell thick liquids bubble.
Background
At present, lithium ion batteries have the advantages of high specific energy, many recycling times, long storage time and the like, are widely applied to portable electronic equipment such as mobile phones, digital video cameras and portable computers, and are also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the performance requirements on the lithium ion batteries are higher and higher.
The battery slurry is a very important link in the production process of manufacturing the lithium ion battery and is the core of the lithium ion battery manufacturing. And coating, rolling and shearing the slurry on the pole piece foil to prepare a pole piece, and transferring the pole piece to a subsequent winding workshop to further finish the subsequent manufacturing of the finished battery. The quality of the lithium battery is directly determined by the quality of the slurry, so that the consistency and the stability of the slurry are very critical.
The existing removal mode of bubbles in battery slurry is poor in removal effect, incomplete bubble removal risk exists, the phenomenon of foil leakage of slurry with bubbles in the coating production process can occur, the yield is reduced, the cost is increased, and battery safety accidents are caused seriously.
The foil leakage phenomenon refers to a phenomenon that a current collector (aluminum foil or copper foil) of a pole piece is exposed because no slurry exists at a position which should be covered by positive slurry or negative slurry in the coating production process of the positive pole piece or the negative pole piece.
In addition, the existing method for removing the bubbles in the battery slurry only stays at the stage of removing the bubbles by using different methods, and a clear evaluation and feedback on the bubble removal effect are not performed. Different batches of slurry have differences in their properties (such as viscosity of the slurry), and the use of the same de-bubbling process to remove bubbles can cause fluctuation of the bubble content in the slurry, which can not ensure the actual removal effect, and also risks incomplete removal of bubbles.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a get rid of device of lithium cell thick liquids bubble to the technical defect that prior art exists.
Therefore, the utility model provides a device for removing the slurry bubbles of the lithium battery, wherein a motor and a vacuum pump are arranged at the top of a slurry storage tank;
the air inlet of the vacuum pump is communicated with the inside of the slurry storage tank;
the output shaft at the bottom of the motor is connected with the tops of the vertically distributed stirring rods in the slurry storage tank;
a plurality of stirring paddles are distributed on the stirring rod;
the peristaltic pump is positioned outside the slurry storage tank;
one end of a peristaltic pump pipe arranged on the peristaltic pump is communicated with the lower part of the left side of the slurry storage tank, and the other end of the peristaltic pump pipe is communicated with the left side of the hollow transparent detection interface container;
the right side of the detection interface container is communicated with the inner space of the slurry storage tank through a hollow backflow pipeline.
Wherein, the image acquisition equipment is arranged right above the detection interface container.
Wherein, the stirring paddle is fixedly connected with the stirring rod by screws.
The vacuum pump is communicated with one end of a hollow connecting pipeline, and the other end of the connecting pipeline penetrates through the top shell of the slurry storage tank and is communicated with the upper space inside the slurry storage tank.
Wherein, the bottom of thick liquids storage tank is provided with the feed inlet.
Wherein, the detection interface container is a hollow and cuboid glass container.
Wherein, under the detection interface container, a strong light source is arranged, and the strong light source comprises a plurality of L ED light sources.
By above the utility model provides a technical scheme is visible, compares with prior art, the utility model provides a get rid of device of lithium cell thick liquids bubble, it can effectively get rid of the bubble in the battery thick liquids, guarantees the quality of battery thick liquids, has the significance of important production practice.
Furthermore, the utility model provides a get rid of device of lithium battery slurry bubble can also carry out effectual management and control to the bubble content in the battery slurry, observes the actual effect of getting rid of that obtains the bubble, further guarantees the quality of battery slurry to improve battery sheet foil and carry out thick liquids coated stability, and then improve the yields of battery sheet and the whole security performance of battery.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for removing bubbles from slurry of a lithium battery provided by the present invention;
fig. 2 is a schematic structural diagram of an embodiment of an apparatus for removing bubbles from slurry of a lithium battery provided by the present invention;
fig. 3 is a schematic diagram of a CCD vision inspection system included in an embodiment of the apparatus for removing bubbles from lithium battery slurry provided by the present invention.
Detailed Description
In order to make the technical field of the present invention better understand, the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 and 2, the utility model provides a device for removing bubbles in lithium battery slurry, which comprises a hollow slurry storage tank 1 and a peristaltic pump 5;
the top of the slurry storage tank 1 is provided with a motor 22 and a vacuum pump 15;
an air inlet of the vacuum pump 15 is communicated with the inside of the slurry storage tank 1 and is used for vacuumizing the inside of the slurry storage tank 1, so that the bubble removing effect is realized;
an output shaft at the bottom of the motor 22 is connected with the tops of the stirring rods (20) which are positioned in the slurry storage tank (1) and vertically distributed; the method specifically comprises the following steps: an output shaft at the bottom of the motor 22 penetrates through a through hole reserved at the top of the slurry storage tank 1 (a sealing ring is arranged between the through hole and the output shaft to ensure the sealing effect), and then is connected with the top of the stirring rods 20 which are vertically distributed (specifically, a coupler can be used);
a plurality of stirring paddles 21 are distributed on the stirring rod 20;
the peristaltic pump 5 is positioned at the outer side of the slurry storage tank 1 (specifically, the peristaltic pump can be fixedly connected with the slurry storage tank 1 through a bracket, such as a screw connection);
one end of a peristaltic pump pipe (namely a material conveying pipeline) 46 of the peristaltic pump 5 is communicated with the lower part of the left side of the slurry storage tank 1, and the other end of the peristaltic pump pipe is communicated with the left side of the hollow transparent detection interface container 10;
the right side of the detection interface container 10 is communicated with the inner space of the slurry storage tank 1 through a hollow backflow pipeline 45;
directly above the inspection interface container 10, an image capturing device 40 (which can be fixed by an existing common holder) is provided.
The utility model discloses in, on specifically realizing, use screw fixed connection between stirring rake 21 and puddler 20.
The utility model discloses in, on specifically realizing, be linked together with slurry storage tank 1 is inside about vacuum pump 15's air inlet, concrete structure is: the vacuum pump 15 is connected to one end of a hollow connecting pipe, and the other end of the connecting pipe penetrates through the top casing of the slurry storage tank 1 and is connected to the upper space inside the slurry storage tank 1 (does not extend into the slurry).
The utility model discloses in, in the concrete realization, the preferred storage tank of stainless steel of thick liquids storage tank 1.
The utility model discloses in, on specifically realizing, the bottom of thick liquids storage tank 1 is provided with feed inlet 30, and this feed inlet is linked together with outside thick liquids delivery pump (for existing equipment).
The utility model discloses in, on specifically realizing, the highest point of the highest stirring rake 21 of distribution position on puddler 20, the distance apart from the jar body bottom of thick liquids storage tank 1 equals the total high 1/4 of the internal portion of jar.
It should be noted that the peristaltic pump tube (i.e. the material conveying pipe) 46 is a matching component of the peristaltic pump 5 itself, the pipe has a corrosion-resistant characteristic, and the pipe is a split structure, the peristaltic pump is made of a soft material, the material of the pipe is generally specially processed silicone rubber, fluororubber, teflon, rubber, plastic, synthetic material, etc., the material of the pipe is hard material outside the peristaltic pump, and the material of the pipe is stainless steel or glass, etc., and the pipe is not much expressed in the existing common structure.
In the utility model, in the concrete implementation, the distance from the bottom end of the peristaltic pump pipe (namely, the conveying pipeline) 46 to the bottom of the slurry storage tank 1 is 1/8 of the total height of the tank;
the distance from the bottom end of the return pipe 45 to the bottom of the slurry storage tank 1 is 1/6, and the peristaltic pump pipe (i.e., the feed delivery pipe) 46 and the return pipe 45 are tightly attached to the pipe wall of the slurry storage tank 1.
In a specific implementation of the present invention, the detection interface container 10 is preferably a hollow, rectangular parallelepiped-shaped glass container.
The utility model discloses in, in the concrete realization, under detecting interface container 10, be provided with highlight light source 50, this highlight light source 50 can include a plurality of L ED light sources.
In the present invention, in particular implementation, image capture device 40 may include an existing Charge Coupled Device (CCD) camera。
It should be noted that, to the utility model discloses, can pass through image acquisition equipment 40, come to take a picture (for example 100 photos are taken per second) to the thick liquids that detect in the interface container 10, then analyze the photo, in a plurality of photos of taking in the preset time (for example 30 seconds), when the photo of the bubble that has appeared, then control vacuum pump 15 and keep the on-state (when stirring thick liquids, the default state of vacuum pump 15 is the on-state), continue to carry out the evacuation operation in constantly to thick liquids storage tank 1, carry out the operation of getting rid of bubble 25 in the thick liquids, if the photo that does not appear to have the bubble, then control closes vacuum pump 15, stop the bubble and get rid of the operation.
The utility model discloses, specifically realize on, both can be through staff's eyes, come the analysis in the many photos of shooting in the time of predetermineeing, whether there is the bubble, then manual control vacuum pump's switch can also set up CCD visual detection system and programmable controller P L C through supporting, realize automatic analysis and control.
In a specific implementation, referring to fig. 2, the image capturing device 40 may be an existing CCD vision inspection system;
the CCD visual detection system is used for photographing the slurry in the detection interface container 10 (for example, 100 photos are photographed per second), analyzing the photos, and sending a starting control signal to the industrial personal computer of the programmable controller when the photos with bubbles appear in a plurality of photos photographed within a preset time (for example, 30 seconds), or sending a closing control signal to the industrial personal computer 35 of the programmable controller when the photos with bubbles do not appear;
and the industrial personal computer 35 is respectively connected with the CCD visual detection system and the vacuum pump 15 and is used for controlling the vacuum pump 15 to be started when a starting control signal sent by the CCD visual detection system is received (when the slurry is stirred, the default state of the vacuum pump 15 is the starting state, the vacuumizing operation is continuously carried out on the slurry storage tank 1, and the removal operation of the bubbles 25 in the slurry is carried out), and controlling the vacuum pump 15 to be closed when a closing control signal sent by the CCD visual detection system is received, so that the removal operation of the bubbles 25 is stopped.
It should be noted that, in particular, in implementation, the CCD vision detection system includes a camera, a vision detection industrial personal computer and a data acquisition card;
the camera is used for photographing the slurry in the detection interface container 10 and then transmitting the photographed slurry to the acquisition card;
the acquisition card is connected with the camera and used for acquiring and quantizing the picture signals into digital signals, then compressing and encoding the digital signals into a digital video sequence and sending the digital video sequence to the visual detection industrial personal computer;
the visual detection industrial personal computer is used for processing and storing the pictures shot by the camera; slurry bubble detection software is installed on the visual detection industrial personal computer and is used for image processing to identify bubbles in the slurry, process the shot picture to form a corresponding signal and transmit feedback;
the camera can be a Basler brand and 200W area array color camera for shooting the picture of the slurry, and a supersonic-speed 8mm type lens can be arranged on the camera. Meanwhile, a supersonic brand light source can be configured to enhance the shooting effect.
The visual detection industrial personal computer can be a Linghua brand industrial personal computer, for example, a CPU (Central processing Unit) is an I7 core, a 4 core and is provided with a 128G solid state disk (the storage hard disk is more than or equal to 4T).
And the visual detection industrial personal computer is connected with a display, and the display is used for displaying the shot picture and the processed result. The slurry bubble detection software is provided by supersonic speed company (Guangzhou supersonic speed automation technology, Inc.), has the functions of size measurement and quantity statistics, can process the shot picture to form a corresponding signal, and then transmits feedback.
The acquisition card can be a high-speed gigabit network card and is used for acquiring and quantizing picture signals into digital signals, and then compressing and encoding the digital signals into a digital video sequence.
Referring to fig. 3, the working principle diagram of the CCD vision inspection system is shown in fig. 3. Through CCD visual inspection system inspection, to a thick liquids test sample before the vacuum treatment, in the detection picture of the sample that obtains, the middle zone non-blank part of picture is thick liquids, and peripheral blank region is the bubble, and the bubble is great, process the utility model discloses a device handles the back, and in the detection picture of the thick liquids test sample that obtains, the bubble in the thick liquids is less, and the area is showing and is reducing.
In order to understand the technical solution of the present invention more clearly, the following description is provided for the specific working process of the apparatus for removing slurry bubbles from lithium batteries according to the present invention:
1. the method comprises the following steps that slurry enters a stainless steel slurry storage tank 1 from a feeding hole 30, a stirring rod 20 drives a stirring paddle 21 to rotate at a slow speed (5rpm) for stirring, when the liquid level of the slurry reaches the stirring paddle, the stirring is accelerated (10-20 rpm), and the feeding hole and the slurry storage tank 1 are of an integrated structure;
2. when the slurry is injected into the slurry storage tank 1 and reaches the corresponding liquid level, the material beating is stopped, and the vacuum pump 15 performs vacuum pumping. When the slurry is static, the slurry liquid level needs to reach 1/2 of the tank height of the slurry storage tank 1; the distance from the highest position of the stirring paddle 21 to the bottom of the tank body is 1/4 of the total height in the tank body; 2-8 stirring paddles are distributed on the stirring rod 20, and the stirring paddles and the stirring rod are fixed by screws; the stirring rod is driven to rotate by a motor 22; the vacuum pump 15 is connected to the slurry tank 1 through a pipe.
3. After the slurry feeding is finished, the peristaltic pump 5 starts to work (the peristaltic pump is located in the middle of the slurry storage tank 1, and is connected with the slurry storage tank 1 through a support outside the storage tank), the slurry is conveyed upwards through a peristaltic pump pipe (namely a conveying pipeline) 46 (the pipeline has the characteristic of corrosion resistance, is of a split structure, is made of a soft material in the peristaltic pump, is generally made of specially-treated silicon rubber, fluororubber, Teflon, rubber, plastic, synthetic materials and the like, is made of a hard material outside the peristaltic pump, is made of stainless steel or glass and the like), and enters the detection interface container 10 (the detection interface container is located above the storage tank, and is a cuboid-shaped glass container with the length of 5cm, the width of 5cm and the middle gap height of 0.5 mm);
wherein, peristaltic pump pipe (being the conveying pipeline) 46 bottom to thick liquids storage tank 1 tank bottom distance is 1/8 departments of jar total height, backflow pipeline 45) bottom to tank bottom distance is 1/6 of jar total height, and conveying pipeline and backflow pipeline all tightly attach on the pipe wall.
4 when the detection container 10 is full of the slurry, the image acquisition device 40 (such as a CCD camera or an existing CCD visual detection system) takes a picture of the slurry in the detection interface container 10 (100 pictures are taken per second) and analyzes the picture, and a strong light source 50 is arranged below the interface to irradiate the interface (the strong light source is a high-light L ED light source, the distance between the light source and the test plane is 3-10 cm, and the power of the light source is 1-10W.)
5. Analyzing the pictures, and if the pictures shot within 30s are analyzed to show bubbles (namely white dots exist in black slurry in the shot pictures), continuing to operate the vacuum pump 15, continuing to perform a defoaming removal effect on the slurry below in a vacuumizing manner, and maintaining the vacuum degree in the tank; when no bubble (namely all black slurry) is analyzed in the continuous 30-second shot pictures, the bubbles in the slurry are considered to be completely removed, the vacuum pump is turned off, the vacuumizing is stopped, and the bubble removing operation is finished.
It should be noted that, when the image acquisition device 40 is an existing CCD vision detection system, the CCD vision detection system analyzes the pictures, if the pictures shot within 30 seconds are analyzed and then bubbles are displayed, (that is, white dots are present in black slurry in the shot pictures), a signal is fed back to the programmable controller industrial personal computer 35, the programmable controller industrial computer 35 controls the vacuum pump, so that the vacuum pump 15 continues to work, the removal effect of removing bubbles from the slurry below is continued by a vacuum pumping mode, and the vacuum degree in the tank is maintained; when the pictures shot for 30s continuously analyze that no bubble exists (namely all black pulp), the bubble in the pulp is considered to be completely removed, and the industrial personal computer 35 of the programmable controller controls the vacuum pump to stop vacuumizing and finish the bubble removing operation.
To sum up, compare with prior art, the utility model provides a pair of get rid of device of lithium cell thick liquids bubble, it can effectively get rid of the bubble in the battery thick liquids, guarantees the quality of battery thick liquids, has the meaning of great production practice.
And simultaneously, the utility model provides a get rid of device of lithium battery slurry bubble can also carry out effectual management and control to the bubble content in the battery slurry, observes the actual effect of getting rid of that obtains the bubble, further guarantees the quality of battery slurry to improve battery sheet foil and carry out thick liquids coated stability, and then improve the yields of battery sheet and the whole security performance of battery.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The device for removing the bubbles of the lithium battery slurry is characterized by comprising a hollow slurry storage tank (1) and a peristaltic pump (5);
the top of the slurry storage tank (1) is provided with a motor (22) and a vacuum pump (15);
the air inlet of the vacuum pump (15) is communicated with the inside of the slurry storage tank (1);
an output shaft at the bottom of the motor (22) is connected with the tops of the stirring rods (20) which are positioned in the slurry storage tank (1) and vertically distributed;
a plurality of stirring paddles (21) are distributed on the stirring rod (20);
the peristaltic pump (5) is positioned outside the slurry storage tank (1);
one end of a peristaltic pump tube (46) arranged on the peristaltic pump (5) is communicated with the lower part of the left side of the slurry storage tank (1), and the other end of the peristaltic pump tube is communicated with the left side of the hollow transparent detection interface container (10);
the right side of the detection interface container (10) is communicated with the inner space of the slurry storage tank (1) through a hollow backflow pipeline (45).
2. The apparatus for removing bubbles from slurry for lithium batteries according to claim 1, wherein an image capturing device (40) is disposed directly above the inspection interface container (10).
3. The apparatus for removing bubbles from slurry for lithium batteries according to claim 1, wherein the paddle (21) is fixedly connected to the stirring rod (20) by screws.
4. The apparatus for deaerating slurry for lithium battery as claimed in claim 1, wherein the vacuum pump (15) is connected to one end of a hollow connecting pipe, and the other end of the connecting pipe is connected to the upper space inside the slurry storage tank (1) after penetrating the top case of the slurry storage tank (1).
5. The apparatus for de-bubbling slurry for lithium batteries according to claim 1, wherein the slurry tank (1) is provided at its bottom with a feed inlet (30).
6. The apparatus for removing bubbles of slurry for lithium batteries according to any one of claims 1 to 5, wherein the detection interface container (10) is a hollow, rectangular parallelepiped-shaped glass container.
7. The apparatus for debubbling lithium battery slurry as claimed in claim 6, wherein a source of intense light (50) is provided directly below the detection interface container (10), the intense light source (50) comprising a plurality of L ED light sources.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921614780.3U CN211097677U (en) | 2019-09-26 | 2019-09-26 | Get rid of device of lithium cell thick liquids bubble |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921614780.3U CN211097677U (en) | 2019-09-26 | 2019-09-26 | Get rid of device of lithium cell thick liquids bubble |
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| CN211097677U true CN211097677U (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575685A (en) * | 2019-09-26 | 2019-12-17 | 力神电池（苏州）有限公司 | Get rid of device of lithium cell thick liquids bubble |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575685A (en) * | 2019-09-26 | 2019-12-17 | 力神电池（苏州）有限公司 | Get rid of device of lithium cell thick liquids bubble |
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