阅读说明：本技术 用于电池生产的极片加工工艺 (Pole piece processing technology for battery production ) 是由 钱车华 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种用于电池生产的极片加工工艺,a.浆料制备:先将活物质、导电剂等粉末物质预混合；混合完了之后加入粘结剂,进行混合搅拌,逐步加入溶剂进行混合、分散,最后加入溶剂稀释调节到涂布所需要的粘度；b.浆料涂覆:涂辊转动带动浆料,通过调整刮刀间隙来调节浆料转移量,并利用背辊或涂辊的转动将浆料转移到基材上；c.极片辊压:两面涂敷颗粒涂层的极片被送入两辊的间隙中,在轧辊线载荷作用下涂层被压实,从辊缝出来后,极片发生弹性回弹导致厚度增加,在极片辊压时,通过轧辊清理设备对轧辊进行粉尘清理；d.极片分切:根据电池的型号将极片分切成所需的宽度；e.极片干燥:最后将极片输送至干燥箱内进行烘干处理。(The invention discloses a pole piece processing technology for battery production, which comprises a, preparing slurry, namely premixing powder substances such as active substances, conductive agents and the like; after mixing, adding the binder, mixing and stirring, gradually adding the solvent for mixing and dispersing, and finally adding the solvent for dilution and adjusting to the viscosity required by coating; b. coating the slurry, namely, rotating the coating roller to drive the slurry, adjusting the slurry transfer amount by adjusting the gap of a scraper, and transferring the slurry onto a base material by utilizing the rotation of a back roller or the coating roller; c. rolling the pole pieces, namely feeding the pole pieces coated with the particle coatings on the two sides into a gap between two rollers, compacting the coatings under the action of the linear load of the rollers, enabling the pole pieces to elastically rebound after coming out of the roller gap to increase the thickness, and cleaning dust of the rollers by using roller cleaning equipment when the pole pieces are rolled; d. cutting the pole piece, namely cutting the pole piece into required widths according to the model of the battery; e. and (5) drying the pole piece, namely conveying the pole piece into a drying box for drying treatment.)

1. A pole piece processing technology for battery production is characterized in that:

a. preparing slurry, namely premixing powder substances such as active substances, conductive agents and the like at a certain speed; after mixing, adding a binder, mixing and stirring, gradually adding a solvent for mixing and dispersing, and finally adding a certain amount of solvent for dilution and adjustment to the viscosity required by coating;

b. coating the slurry, namely, rotating the coating roller to drive the slurry, adjusting the slurry transfer amount by adjusting the gap of a scraper, and transferring the slurry onto a base material by utilizing the rotation of a back roller or the coating roller;

c. rolling the pole pieces, namely feeding the pole pieces coated with the particle coatings on the two sides into a gap between two rollers, compacting the coatings under the action of the linear load of the rollers, enabling the pole pieces to elastically rebound after coming out of the roller gap to increase the thickness, and cleaning dust of the rollers by using roller cleaning equipment when the pole pieces are rolled;

d. cutting the pole piece, namely cutting the pole piece into required widths according to the model of the battery;

e. drying the pole piece, namely conveying the pole piece into a drying box for drying treatment;

the roller cleaning equipment comprises a first cleaning barrel (11), a second cleaning barrel (12) and a third cleaning barrel (13) which are used for cleaning dust on a roller, a control barrel (2) which is used for controlling the rotation of the first cleaning barrel (11), the second cleaning barrel (12) and the third cleaning barrel (13), and a dust removal device which is used for removing the dust on the first cleaning barrel (11), the second cleaning barrel (12) and the third cleaning barrel (13) respectively, wherein the first cleaning barrel (11), the second cleaning barrel (12) and the third cleaning barrel (13) are communicated with the control barrel (2) through two connecting pipes (21), the connecting pipes (21) are movably connected with the first cleaning barrel (11), the second cleaning barrel (12) and the third cleaning barrel (13) respectively, and a first driving part (22) which is used for sucking the dust is arranged in the control barrel (2); when the roll is rolling the pole piece, first clearance section of thick bamboo (11) contact with the roll, when the roll rotates, first clearance section of thick bamboo (11) rotates along with it, first driving piece starts, the dust on the roll is sucked, make the dust get into in the control cylinder (2), when first clearance section of thick bamboo (11) reach the dust removal limit, control cylinder (2) rotate, make second clearance section of thick bamboo (12) contact with the roll, carry out dust removal treatment to the roll, and first clearance section of thick bamboo (11) then rotate to dust collector and handle, get rid of the dust on the first clearance section of thick bamboo (11) through dust collector, make first clearance section of thick bamboo (11) can continue to the roll clearance.

2. The pole piece processing technology for battery production according to claim 1, characterized in that: the binder is SBR latex, wherein the SBR content is 10%.

3. The pole piece processing technology for battery production according to claim 1, characterized in that: the binder is SBR latex, wherein the SBR content is 60 percent.

4. The pole piece processing technology for battery production according to claim 1, characterized in that: the active material is a mixture of Ni (OH)2 and CoO and additives, wherein the content of Ni (OH)2 is more than 90%.

5. The pole piece processing technology for battery production according to claim 1, characterized in that: the drying time of the pole piece in the drying oven is three hours.

6. The pole piece processing technology for battery production according to claim 1, characterized in that: the temperature in the drying box is 180 ℃.

7. The pole piece processing technology for battery production according to claim 1, characterized in that: the outer circumferential surfaces of the first cleaning cylinder (11), the second cleaning cylinder (12) and the third cleaning cylinder (13) are all sleeved with cleaning pieces (14), a plurality of vent holes (111) are arranged on the first cleaning cylinder (11), the second cleaning cylinder (12) and the third cleaning cylinder (13), two ends of the first cleaning cylinder (11), the second cleaning cylinder (12) and the third cleaning cylinder (13) are respectively provided with an insertion hole (112) for inserting the connecting pipe (21), the connecting pipe (21) is provided with a first limit part (211) and a second limit part (212) which are respectively arranged at two sides of the jack (112), a spherical sealing piece (23) for opening and closing the connecting pipe (21) and a sealing groove (231) matched with the spherical sealing piece (23) are arranged at the connecting part of the connecting pipe (21) and the control cylinder (2), a fixing frame (213) for blocking the spherical closing piece (23) is arranged on the connecting pipe (21); when the pole piece is rolled by the roller, the cleaning piece (14) on the first cleaning barrel (11) is in contact with the roller, the rotation of the roller drives the cleaning piece (14) to rotate, the first cleaning barrel (11) can rotate between the connecting pipes through the connection of the connecting pipes (21), at the moment, the first driving piece (22) is started, so that dust on the roller can be sucked through the suction of the first driving piece (22) when the cleaning piece (14) rotates, the spherical sealing piece (23) falls on the fixing frame (213) and keeps opening the connecting pipe (21) when the first cleaning barrel (11) is in contact with the roller, at the moment, the second cleaning barrel (12) and the third cleaning barrel (13) are located above the first cleaning barrel (11) and are in an inverted state, at the moment, the spherical sealing piece (23) falls into the sealing groove (231) and seals the connecting pipe (21).

8. The pole piece processing technology for battery production according to claim 7, characterized in that: dust collector includes dust cover (31), is used for driving dust cover (31) second driving piece (32) that goes up and down to move, is used for controlling first clearance section of thick bamboo (11), second clearance section of thick bamboo (12) and third clearance section of thick bamboo (13) pivoted rotatory roller (33) and is used for sucking third driving piece (34) of dust, be equipped with a plurality of convex parts (331) on rotatory roller (33), the tip of rotatory roller (33) is equipped with and is used for driving rotatory roller (33) pivoted fourth driving piece (35), be equipped with on dust cover (31) with clearance piece (14) matched with suction chamber (311) and dust storage room (312), the bottom in suction chamber (311) is equipped with a plurality of dust absorption holes (313), dust storage room (312) are linked together with suction chamber (311) through a pipeline (314), dust cover (31) are including being used for wrapping up first clearance section of thick bamboo (11), A curved portion (316) of the second cleaning cylinder (12) and the third cleaning cylinder (13) and an extension portion (317) for accommodating the rotating roller (33); when the first cleaning barrel (11) is turned over to the upper side, the second driving piece (32) drives the dust cover (31) to move downwards, so that the dust cover (31) covers the cleaning piece (14), then the fourth driving piece (35) controls the rotating roller (33) to rotate, the rotating roller (33) drives the cleaning piece (14) to rotate through the convex portion (331), when the cleaning piece (14) rotates, the dust suction cavity (311) which is in contact with the cleaning piece (14) sucks dust and scrapes the surface of the cleaning piece (14) to a certain degree, and the third driving piece (34) sucks the dust into the dust storage chamber (312).

Technical Field

The invention belongs to the technical field of battery pole piece processing, and particularly relates to a pole piece processing technology for battery production.

Background

In the rolling process of the lithium battery pole piece for the electric automobile, high compaction density and compression rate are needed in the compression roller operation process, so that dust and material particles are easy to adhere to the upper compression roller and the lower compression roller of the rolling machine in the rolling process, and the machined product is marked or even damaged.

The prior publication No. CN102773261B discloses a battery pole piece film binding machine and a roll surface cleaning device thereof, which can automatically clean the adhered matter on the roll surface of a roll in time and reliably, avoid the situation that manual cleaning is not in place, keep the roll surface clean in real time, ensure the rolling quality of pole pieces and reduce the labor cost in the production process; however, when the device cleans the roller, the roller surface is scraped to cause damage to the roller surface, the rolling quality of the roller to the pole piece is affected, partial dirt is easy to adhere to the scraper, the scraper is cleaned after shutdown, and a lot of time is wasted.

Disclosure of Invention

The invention provides a pole piece processing technology for battery production, which can avoid damaging a roller and does not need to be stopped for cleaning, in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a pole piece processing technology for battery production comprises a, preparing slurry, premixing powder materials such as active materials, conductive agents and the like at a certain speed; after mixing, adding a binder, mixing and stirring, gradually adding a solvent for mixing and dispersing, and finally adding a certain amount of solvent for dilution and adjustment to the viscosity required by coating; b. coating the slurry, namely, rotating the coating roller to drive the slurry, adjusting the slurry transfer amount by adjusting the gap of a scraper, and transferring the slurry onto a base material by utilizing the rotation of a back roller or the coating roller; c. rolling the pole pieces, namely feeding the pole pieces coated with the particle coatings on the two sides into a gap between two rollers, compacting the coatings under the action of the linear load of the rollers, enabling the pole pieces to elastically rebound after coming out of the roller gap to increase the thickness, and cleaning dust of the rollers by using roller cleaning equipment when the pole pieces are rolled; d. cutting the pole piece, namely cutting the pole piece into required widths according to the model of the battery; e. drying the pole piece, namely conveying the pole piece into a drying box for drying treatment;

the roller cleaning equipment comprises a first cleaning barrel, a second cleaning barrel and a third cleaning barrel for cleaning dust on a roller, a control barrel for controlling the first cleaning barrel, the second cleaning barrel and the third cleaning barrel to rotate, and a dust removing device for removing the dust on the first cleaning barrel, the second cleaning barrel and the third cleaning barrel respectively, wherein the first cleaning barrel, the second cleaning barrel and the third cleaning barrel are communicated with the control barrel respectively through two connecting pipes which are movably connected with the first cleaning barrel, the second cleaning barrel and the third cleaning barrel respectively, and a first driving piece for sucking the dust is arranged in the control barrel; when the pole piece is rolled, the first cleaning barrel is contacted with the roller, when the roller rotates, the first cleaning barrel rotates along with the roller, the first driving piece is started to suck dust on the roller, so that the dust enters the control barrel, when the first cleaning barrel reaches the dust removal limit, the control barrel rotates, so that the second cleaning barrel is contacted with the roller to perform dust removal treatment on the roller, the first cleaning barrel rotates to the dust removal device to remove the dust on the first cleaning barrel through the dust removal device, so that the first cleaning barrel can continue to clean the roller, through the arrangement of the structure, when the roller rolls the pole piece, the effect of removing the dust can be realized through the first cleaning barrel, the second cleaning barrel and the third cleaning barrel, the production quality of the pole piece is prevented from being influenced by the dust remaining on the roller, and the pollution to the working environment is avoided, and harm staff's healthy, avoid simultaneously causing the damage to the roll, and need not the clearance of shutting down, and can clear up the clearance piece automatically, guarantee to remove dust disposal's continuation to the roll.

The binder is SBR latex, wherein the SBR content is 10%; through the setting of above-mentioned binder, can reduce the consistency of binder, improve the mixing efficiency with the thick liquid.

The binder is SBR latex, wherein the SBR content is 60%; through the setting of above-mentioned binder, can increase the viscosity of binder, improve the viscosity of thick liquid, improve thick liquid and subside stability.

The active material is a mixture of Ni (OH)2 and CoO and additives, wherein the content of Ni (OH)2 is more than 90%; by the above arrangement of the active material, the mixing efficiency of the slurry can be increased.

The drying time of the pole piece in the drying box is three hours; this time length setting can increase the drying quality of pole piece, strengthens the stoving effect.

The temperature in the drying box is 180 ℃; to the setting of this temperature, can improve the drying efficiency to the pole piece, shorten the stoving time to the pole piece.

Cleaning pieces are sleeved on the outer circumferential surfaces of the first cleaning barrel, the second cleaning barrel and the third cleaning barrel, a plurality of vent holes are formed in the first cleaning barrel, the second cleaning barrel and the third cleaning barrel, jacks for inserting connecting pipes are formed in two ends of the first cleaning barrel, the second cleaning barrel and the third cleaning barrel respectively, first limiting parts and second limiting parts which are arranged on two sides of the jacks respectively are arranged on the connecting pipes, spherical sealing pieces used for opening and closing the connecting pipes and sealing grooves matched with the spherical sealing pieces are formed in the connecting positions of the connecting pipes and the control barrel, and fixing frames used for blocking the spherical sealing pieces are arranged on the connecting pipes; when the pole piece is rolled by the roller, the cleaning piece on the first cleaning barrel is in contact with the roller, the rotation of the roller drives the cleaning piece to rotate, the first cleaning barrel is connected with the roller through the connecting pipe and can rotate between the connecting pipes, at the moment, the first driving piece is started, so that dust on the roller can be sucked by the suction of the first driving piece when the cleaning piece rotates, when the first cleaning barrel is in contact with the roller, the spherical sealing piece falls on the fixing frame and keeps opening the connecting pipe, at the moment, the second cleaning barrel and the third cleaning barrel are positioned above the first cleaning barrel and are in an inverted state, at the moment, the spherical sealing piece falls into the sealing groove, and the connecting pipe is sealed; through the setting of above-mentioned structure, make above-mentioned roll carry out the dust clearance through the clearance piece, avoid causing the damage and influence the processingquality of pole piece to the roll, and the setting of first spacing portion and the spacing portion of second, make the clearance piece can realize the effect of rotary type clearance, increase the cleaning area that can clear up of clearance piece, increase the time interval of changing the clearance piece, reduce and change required time, and the setting of spherical closing member, can open and close control to the connecting pipe, so that reduce the passageway of ventilating, reduce the output of first driving piece, improve the suction performance to the dust.

The dust removal device comprises a dust cover, a second driving piece for driving the dust cover to move up and down, a rotating roller for controlling the first cleaning barrel, the second cleaning barrel and the third cleaning barrel to rotate, and a third driving piece for sucking dust, wherein a plurality of convex parts are arranged on the rotating roller, a fourth driving piece for driving the rotating roller to rotate is arranged at the end part of the rotating roller, a dust suction cavity and a dust storage chamber which are matched with the cleaning pieces are arranged on the dust cover, a plurality of dust suction holes are formed in the bottom of the dust suction cavity, the dust storage chamber is connected with the dust suction cavity through a conveying pipeline, and the dust cover comprises a bending part for wrapping the first cleaning barrel, the second cleaning barrel and the third cleaning barrel and an extending part for accommodating the rotating roller; when the first cleaning barrel is turned over to the upper side, the second driving piece drives the dust cover to move downwards, so that the dust cover covers the cleaning piece, then the fourth driving piece controls the rotating roller to rotate, the rotating roller drives the cleaning piece to rotate through the convex part, when the cleaning piece rotates, the dust suction cavity in contact with the cleaning piece sucks dust and scrapes the surface of the cleaning piece to a certain extent, and the third driving piece sucks the dust into the dust storage chamber; through the setting of above-mentioned dust cover, can avoid flying everywhere of dust to raise, avoid flying of dust and pollute operational environment, improve the suction thoroughness to the dust, and the aforesaid sets up to the convex part of rotatory roller, can carry out the top of certain degree to the clearance piece and move for the clearance piece carries out slight shake, so that remove remaining dust on the clearance piece, strengthen the dust removal effect to the clearance piece.

The invention has the following advantages: this a pole piece processing technology for battery production is through the setting of above-mentioned structure for battery pole piece when carrying out the roll-in, the roll can carry out the processing of continuous stable dust of getting rid of through clearance piece, avoid the adhesion of dust on the roll, and can avoid causing the damage to the surface of roll when the clearance, simultaneously, need not to shut down alright clear up and change with clearing up the piece, guarantee the continuation to the roll clearance, avoid shutting down the interrupt and waste time, the machining efficiency to the pole piece has been improved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a first perspective sectional view of fig. 1.

Fig. 3 is an enlarged view of a structure at a in fig. 2.

Fig. 4 is an enlarged view of a structure at B in fig. 2.

Fig. 5 is an enlarged view of a structure at C in fig. 2.

Fig. 6 is an enlarged view of the structure at D in fig. 2.

Fig. 7 is a second perspective sectional view of fig. 1.

Fig. 8 is an enlarged view of a structure at E in fig. 7.

Detailed Description