CN115945812A - A bubble removal mechanism and bubble removal method for cell cutting spray - Google Patents

Abstract

The invention discloses a bubble removing mechanism for cutting and spraying a battery piece, which comprises a water outlet channel, a water inlet channel, a cover plate and a fixing plate, wherein a section of hydrophobic vent pipe is connected between the water outlet channel and the water inlet channel, the cover plate and the fixing plate are arranged on the outer side of the hydrophobic vent pipe, a closed cavity is formed on the outer side of the hydrophobic vent pipe, and an air exhaust channel is connected on the closed cavity. The drainage permeability tube is made of a permeable and impermeable material, the inside and the outside of the sealed cavity are kept in a near vacuum state through the external vacuumizing equipment of the air exhaust channel, and gas in the water supply pipeline is pumped out through the drainage permeability tube, so that poor splitting of the battery piece caused by gathering of small bubbles into large bubbles is avoided, and the problem that spraying bubbles cannot be completely eliminated in the prior art is solved.

Description

A bubble removal mechanism and bubble removal method for cell cutting spray

technical field

The invention relates to the field of cell cutting, in particular to a bubble removal mechanism and method for cell cutting spray.

Background technique

In the production of battery slices, in order to reduce the loss of battery slices, the existing method uses the combination of thermal cracking laser and spray cooling to complete the cracking of the battery slices; in the document of patent application number CN201880031469.8, a A cell cutting method, the method is to use laser slotting, heating and cooling cutting method.

In order to ensure the cracking effect of the battery sheet, the stability of the sprayed cooling water is extremely high. It is required that the water mist should not be interrupted during the spraying process, and there should be no disturbance, and the water pressure and air pressure should be stable; but in actual production, due to the nozzle Exposure to the outside air will always generate tiny air bubbles in the water channel of the nozzle (the bubbles will be generated more frequently when the nozzle is switched on and off frequently), these bubbles will eventually move to the upper pipe of the nozzle due to being lighter than water, and eventually Gathered into large air bubbles, the large air bubbles are sent out with the water flow, which eventually leads to uneven cracking of the cells and damage to the cells.

Contents of the invention

The purpose of the present invention is to solve the shortcomings in the prior art, and propose a cell cutting spray bubble removal mechanism and bubble removal method.

In order to achieve the above object, the present invention adopts the following technical scheme: including a water outlet channel, a water inlet channel, a cover plate and a fixing plate, a section of hydrophobic ventilation pipe is connected between the water outlet channel and the water inlet channel, and the cover plate and the fixed The plate is installed on the outside of the hydrophobic ventilation pipe, and forms a closed cavity on the outside of the hydrophobic ventilation pipe, and the closed cavity is connected with a suction channel.

Preferably, the hydrophobic ventilation tube is made of ePTEF.

Preferably, the cover plate is sealingly connected with the fixing plate.

Preferably, the water outlet channel is connected with the spray head, and the water inlet channel is connected with the water supply mechanism.

Preferably, an air extraction device is connected to the output end of the air extraction channel, and the air extraction device is kept in a normally open state.

Preferably, the distance between the hydrophobic ventilation pipe and the nozzle is less than 500mm.

Preferably, the pumping channel is airtightly connected with the airtight cavity.

Preferably, the outer surfaces of the hydrophobic ventilation pipes are all in contact with the closed cavity.

Preferably, the inner wall of the sealed cavity is treated with anti-corrosion treatment.

A method for removing air bubbles of a cell cutting spray air bubble removal mechanism, comprising the following steps:

In the first step, the hydrophobic ventilation pipe is arranged between the water outlet channel and the water inlet channel, and then the cover plate and the fixing plate are installed on the outside of the hydrophobic ventilation pipe, and a cover plate is formed on the outside of the hydrophobic ventilation pipe. A closed cavity wrapped with the fixed plate, and an air extraction channel is connected to the outside of the closed cavity;

In the second step, the water inlet channel is connected to a pure water supply system, the water outlet channel is connected to a spray nozzle, and the air extraction channel is connected to a vacuum system;

In the third step, the valve is opened to maintain normal communication between the water inlet channel and the water outlet channel, and the vacuum pumping system is activated and kept open to form a vacuum environment in the sealed cavity.

The hydrophobic venting tube is made of a kind of breathable and impermeable material, and the vacuum equipment is connected externally through the air pumping channel to maintain a near vacuum state inside and outside the closed cavity, and the gas in the water delivery pipe is pumped out through the hydrophobic venting tube, thereby preventing small bubbles from converging into large bubbles Afterwards, the cracking of the battery sheet is poor, which solves the problem that the spray bubbles cannot be completely eliminated in the prior art.

Description of drawings

Fig. 1 is the structural representation of the air bubble removal mechanism that the present invention proposes;

Fig. 2 is an internal exploded view of the air bubble removal mechanism proposed by the present invention.

illustration:

1. Water outlet channel; 2. Air pumping channel; 3. Water inlet channel; 4. Cover plate; 5. Fixed plate; 6. Hydrophobic ventilation pipe.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, and therefore should not be construed as limiting the present invention; the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance, and unless otherwise Clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a Electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Referring to Figures 1-2, an embodiment provided by the present invention includes a water outlet channel 1, a water inlet channel 3, a cover plate 4 and a fixing plate 5, and a section of hydrophobic ventilation pipe 6 is connected between the water outlet channel 1 and the water inlet channel 3 , the cover plate 4 and the fixing plate 5 are installed on the outside of the hydrophobic ventilation pipe 6, and a closed cavity is formed on the outside of the hydrophobic ventilation pipe 6, and the air suction channel 2 is connected to the closed cavity.

Further, the hydrophobic ventilation pipe 6 is made of ePTEF.

Through this technical solution, the hydrophobic ventilation tube 6 is a material that can pass through gas but impermeable to water flow. Through the hydrophobic ventilation tube 6, air bubbles can be discharged from the tube wall, so that they will not be enriched into large bubbles and eventually lead to spray NG; In order to achieve this effect, the ePTEF material hollow fiber ventilation tube is used in this embodiment, and in other embodiments, a tube body made of a material with the same function can also be used.

Further, the cover plate 4 is sealingly connected with the fixing plate 5 .

Through this technical solution, the connection between the cover plate 4 and the fixing plate 5 needs to ensure that the closed cavity inside it is a sealed structure.

Further, the water outlet channel 1 is connected with the nozzle, and the water inlet channel 3 is connected with the water supply mechanism.

Through this technical solution, the mechanism is installed on the upper end of the spray nozzle to remove the large and small air bubbles moving up from the nozzle, and can also deal with the air bubbles moving with the cooling water.

Further, the output end of the air extraction channel 2 is connected with a vacuum system, and the vacuum system is kept in a normally open state.

Through this technical solution, the vacuum system can be realized with an air pumping device. Through the air pumping channel 2, the closed cavity is kept in a near-vacuum negative pressure state, and the large and small air bubbles in the water delivery system are released from the hydrophobic ventilation pipe 6. The pipe wall overflows, thereby removing the large and small air bubbles in the cooling water, and almost completely eliminating the influence of air bubbles on spray stability.

Further, the distance between the hydrophobic ventilation pipe 6 and the spray nozzle is less than 500mm.

Through this technical scheme, the hydrophobic venting pipe 6 should not be designed to be too far apart from the nozzles, and the influence of the water supply system of the hydrophobic venting pipe 6 should also be considered to avoid that the nozzles are too far apart, making it difficult for the air bubbles to move up to the position of the hydrophobic venting pipe 6 and to avoid excessively spaced nozzles. affect the stability of water flow.

Further, the pumping channel 2 is sealed and connected with the airtight cavity.

Further, the outer surfaces of the hydrophobic ventilation pipe 6 are all in contact with the closed cavity.

Through this technical solution, the outer surface of the hydrophobic ventilation tube 6 is completely exposed in the closed cavity, which increases the contact area and makes the gas permeation effect better.

Further, the inner wall of the sealed cavity is treated for anti-corrosion.

Through this technical solution, the anti-corrosion treatment ensures the service life of the bubble removal mechanism.

A method for removing air bubbles of a cell cutting spray air bubble removal mechanism, comprising the following steps:

In the first step, the hydrophobic ventilation tube 6 is arranged between the water outlet channel 1 and the water inlet channel 3, and then the cover plate 4 and the fixing plate 5 are installed on the outside of the hydrophobic ventilation tube 6, and a cover is formed on the outside of the hydrophobic ventilation tube 6. The airtight cavity wrapped by the plate 4 and the fixed plate 5, and the air extraction channel 2 is connected to the outside of the airtight cavity;

In the second step, the water inlet channel 3 is connected to the pure water supply system, the water outlet channel 1 is connected to the spray nozzle, and the air extraction channel 2 is connected to the vacuum system;

In the third step, the valve is opened to maintain the normal communication between the water inlet channel 3 and the water outlet channel 1, and the vacuum system is activated and kept open to form a vacuum environment in the sealed cavity.

Working principle: A bubble removal mechanism is installed on the upper end of the cooling water feeding nozzle. The bubble removal mechanism includes a hydrophobic ventilation tube 6 and a closed cavity arranged outside the hydrophobic ventilation tube 6. The hydrophobic ventilation tube 6 is made of a breathable and impermeable material Connect the vacuum equipment through the pumping channel 2 to maintain a near-vacuum state inside and outside the airtight cavity, and pump out the gas in the water delivery pipe through the hydrophobic venting tube 6, so as to avoid the poor cracking of the battery sheet after the small bubbles merge into large bubbles.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still It is possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present invention shall be included in the within the protection scope of the present invention.

Claims (10)

1. The utility model provides a bubble removal mechanism of battery piece cutting spraying, includes outlet channel (1), water inlet channel (3), apron (4) and fixed plate (5), its characterized in that: a section of hydrophobic vent pipe (6) is connected between the water outlet channel (1) and the water inlet channel (3), the cover plate (4) and the fixing plate (5) are installed on the outer side of the hydrophobic vent pipe (6), a closed cavity is formed on the outer side of the hydrophobic vent pipe (6), and the air exhaust channel (2) is connected to the closed cavity.

2. The bubble removing mechanism for battery piece cutting spray according to claim 1, wherein: the hydrophobic air permeability tube (6) is made of an ePTEF material.

3. The bubble removing mechanism for battery piece cutting spray according to claim 1, wherein: the cover plate (4) is connected with the fixing plate (5) in a sealing mode.

4. The bubble removing mechanism for battery piece cutting spray according to claim 1, wherein: the water outlet channel (1) is connected with the nozzle, and the water inlet channel (3) is connected with the water supply mechanism.

5. The bubble removing mechanism for battery piece cutting spray according to claim 1, wherein: the output end of the air pumping channel (2) is connected with a vacuum pumping system, and the vacuum pumping system is kept in a normally open state.

6. The mechanism of claim 1 for removing bubbles from a cutting spray of a battery plate, wherein: the distance between the hydrophobic vent pipe (6) and the spray nozzle is less than 500mm.

7. The bubble removing mechanism for battery piece cutting spray according to claim 1, wherein: the air pumping channel (2) is hermetically connected with the closed cavity.

8. The bubble removing mechanism for battery piece cutting spray according to claim 1, wherein: the outer surface of the hydrophobic vent pipe (6) is in contact with the closed cavity.

9. The bubble removing mechanism for battery piece cutting spray according to claim 1, wherein: and the inner wall of the sealed cavity is subjected to anti-corrosion treatment.

10. A bubble removing method of a battery piece cutting and spraying bubble removing mechanism is characterized in that: the method comprises the following steps:

firstly, arranging a hydrophobic vent pipe (6) between a water outlet channel (1) and a water inlet channel (3), then installing a cover plate (4) and a fixing plate (5) on the outer side of the hydrophobic vent pipe (6), forming a closed cavity wrapped by the cover plate (4) and the fixing plate (5) on the outer side of the hydrophobic vent pipe (6), and connecting an air suction channel (2) on the outer side of the closed cavity;

secondly, connecting the water inlet channel (3) with a pure water supply system, connecting the water outlet channel (1) with a spray nozzle, and connecting the air exhaust channel (2) with a vacuum-pumping system;

and thirdly, opening a valve, keeping the water inlet channel (3) and the water outlet channel (1) normally communicated, starting the vacuum pumping system, continuously keeping the vacuum pumping system in an opening state, and forming a vacuum environment in the closed cavity.

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