CN112054164B - Method and device for adding binder for lithium ion battery - Google Patents
Method and device for adding binder for lithium ion battery Download PDFInfo
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- CN112054164B CN112054164B CN202010967943.7A CN202010967943A CN112054164B CN 112054164 B CN112054164 B CN 112054164B CN 202010967943 A CN202010967943 A CN 202010967943A CN 112054164 B CN112054164 B CN 112054164B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a method and a device for adding a binder for a lithium ion battery, which comprises the following steps: the method comprises the following steps: firstly, SSBR is dissolved in cyclohexane to prepare SSBR solution; step two: soaking a pole piece material belt of the battery into an SSBR solution, and drying the electrode by a wet method, wherein a solvent on the pole piece material belt is evaporated to leave a fine pore; step three: and filling the SSBR solution into the holes of the pole piece material belt in a roller filling mode, and slowly drying cyclohexane in the holes to gradually form a film to cover the surface of the pole piece material belt. According to the method and the device for adding the binder for the lithium ion battery, the distribution state of the binder in the electrode in the traditional mixing and adding method is changed, the porous characteristic of the electrode is facilitated, SSBR is filled into the holes of the electrode, the film is formed on the surface of particles, and the polymer is bonded in a winding and wrapping mode, so that the purposes of improving the battery performance and reducing the manufacturing abnormity are achieved.
Description
Technical Field
The invention belongs to the field of manufacturing of lithium ion battery pole pieces, and particularly relates to a method and a device for adding a binder for a lithium ion battery.
Background
Lithium ion batteries can be classified into capacity type and power type according to performance design, wherein the power type batteries require electrons to be rapidly transferred in electrodes due to high power output of the power type batteries. The high addition of conductive agent is a design feature of power cells. How to well bond the conductive agent with high addition amount between active material particles and between the active material and a current collector is an important subject of research on both material selection and manufacturing process of the power battery. Currently, SBR for lithium ion batteries is an emulsion polymerization product. In practical application, the ESBR emulsion, the active substance, the conductive agent and the solvent are mixed and then coated on a current collector, and then the electrode is manufactured through drying and rolling. When the conductive agent is designed with high addition, due to the limitation of an ESBR self-bonding mechanism, the conductive agent falls off and adheres to a rolling roller during electrode rolling, so that the rolling cannot be performed. Meanwhile, when the battery is charged and discharged at a high rate, the ESBR can respond to failure in the face of rapid and repeated expansion and contraction of the electrode, and particles are bonded and separated to cause the phenomena of high attenuation speed and short service life of the battery.
Disclosure of Invention
In view of the above, the present invention is directed to a method for adding a binder for a lithium ion battery, so as to solve the problem of roll sticking during rolling of a high-rate lithium ion battery electrode and improve the cycle life of a power battery.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for adding a binder for a lithium ion battery comprises the following steps:
the method comprises the following steps: firstly, SSBR is dissolved in cyclohexane to prepare SSBR solution;
step two: soaking a pole piece material belt of the battery into an SSBR solution, and drying the electrode by a wet method, wherein a solvent on the pole piece material belt is evaporated to leave a fine pore;
step three: and filling the SSBR solution into the holes of the pole piece material belt in a roller filling mode, and slowly drying cyclohexane in the holes to gradually form a film to cover the surface of the pole piece material belt.
Further, the parameters of the SSBR solution in the first step are that the solid content is 5 wt%, and the viscosity is in the range of 200cp-600 cp.
Compared with the prior art, the method for adding the binder for the lithium ion battery has the following advantages:
(1) according to the method for adding the binder for the lithium ion battery, disclosed by the invention, the distribution state of the binder in the electrode in the traditional mixing and adding method is changed, the porous characteristic of the electrode is facilitated, SSBR is filled into the holes of the electrode, the film is formed on the surface of particles, and the polymer is bonded in a winding and wrapping manner, so that the purposes of improving the battery performance and reducing the manufacturing abnormity are achieved.
The invention also aims to provide a binder adding device for a lithium ion battery, which is used for solving the roller sticking problem during rolling of the high-rate lithium ion battery electrode and prolonging the cycle life of the power type battery.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a binder adding device for a lithium ion battery comprises a storage tank, a controller, a filling groove, a guide wheel, a filling wheel II, a drying oven, a driving guide wheel, a cyclohexane concentration detector, a temperature sensor and a controller II, wherein one end of the storage tank is connected to a feeding port of the filling groove through a feeding pump, a stirring paddle, a storage tank liquid level sensor and an audible and visual alarm are arranged in the storage tank, the stirring paddle is connected to a stirring motor, the liquid level sensor is arranged above the inner wall of the filling groove, the guide wheel, the filling wheel I and the filling wheel II are sequentially arranged in the filling groove from the feeding direction, the drying oven and the driving guide wheel are arranged at the next station of the filling groove, the cyclohexane concentration detector and the alarm are arranged in the drying oven, the temperature sensor is arranged at the outlet of the drying oven, the driving guide wheel is driven by a driving wheel driving motor and is used for driving a pole piece material belt to move, alarm, action wheel driving motor, cyclohexane concentration detector and temperature sensor equal signal connection to No. two controllers, agitator motor, storage tank level sensor, audible-visual annunciator, pay-off pump and level sensor equal signal connection to a controller, No. two fill wheel one end and be connected to No. two motors, a fill wheel one end and be connected to a motor, a motor and No. two motors respectively signal connection to a controller.
Furthermore, the stirring motor, the first motor, the second motor and the driving wheel driving motor are all servo motors, the stirring motor, the first motor and the second motor are respectively connected to the first controller through a driver signal, the driving wheel driving motor is connected to the second controller through a driving driver signal, and the models of the first motor, the second motor, the driving wheel driving motor, the stirring motor, the driver and the driving driver are Mitsubishi MR-J4 series; the first controller and the second controller are PLC of Mitsubishi RQ series.
Further, the feeding pump is a diaphragm pump, a rotor pump or a screw pump.
Furthermore, the outer diameters of the guide wheel, the first filling wheel and the second filling wheel are the same, and the centers of the guide wheel, the first filling wheel and the second filling wheel are located at the same horizontal height.
Furthermore, the outer diameter ranges of the guide wheel, the first filling wheel and the second filling wheel are all phi 200 mm-phi 1000 mm.
Further, the linear speeds of the first filling wheel and the second filling wheel are consistent, and the linear speed of the second filling wheel is greater than the tape moving speed of the pole piece material tape.
Furthermore, the filling angle between the first filling wheel and the pole piece material belt is A, and the angle range of A is 20-60 degrees.
Furthermore, the filling angle between the second filling wheel and the pole piece material belt is B, and the angle range of B is 20-60 degrees.
Compared with the prior art, the binder adding device for the lithium ion battery has the following advantages:
(1) the binder adding device for the lithium ion battery is beneficial to the characteristic of wrapping and winding force among SSBR high-molecular chains, and the SSBR is added into the lithium ion battery, so that the problem of the adhesion of a high-addition-quantity conductive agent and active substance particles in a high-rate charge-discharge power battery is solved.
(2) According to the binder adding device for the lithium ion battery, the rotating linear speed of the filling wheel is slightly larger than the traveling speed of the pole piece material belt, so that the filling efficiency is improved.
(3) The binder adding device for the lithium ion battery is simple in structure of the arranged filling groove, and when the filling efficiency is low, the binder is added step by step in a multi-stage filling wheel mode, so that the filling wheels are conveniently added.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a binder adding apparatus for a lithium ion battery according to an embodiment of the present invention;
fig. 2 is a first schematic block diagram of a binder adding device for a lithium ion battery according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of a second device for adding an adhesive for a lithium ion battery according to an embodiment of the present invention.
Description of reference numerals:
1-a material storage tank; 2-a feeding pump; 3-a controller; 4-a liquid level sensor; 5-filling the groove; 6-a guide wheel; 7-a filling wheel; 8-filling wheel II; 9-pole piece material belt; 10-a feeding port; 11-baking oven; 12-a driving guide wheel; 13-cyclohexane concentration detector; 14-a temperature sensor; 15-controller number two.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The noun explains:
SBR: styrene butadiene rubber;
ESBR: emulsion polymerized styrene butadiene rubber;
SSBR: solution polymerized styrene butadiene rubber.
A method for adding a binder for a lithium ion battery mainly comprises the following steps:
the method comprises the following steps: firstly, SSBR is dissolved in cyclohexane to prepare SSBR solution;
step two: soaking a pole piece material belt of the battery into an SSBR solution, and drying the electrode by a wet method, wherein a solvent on the pole piece material belt is evaporated to leave a fine pore;
step three: filling an SSBR solution into the holes of the pole piece material belt in a roller filling mode, and slowly drying cyclohexane in the holes to gradually form a film on the surface of the pole piece material belt; the function of binding active substance particles and a conductive agent is achieved.
The preparation of the SSBR solution adopts a conventional solution preparation method and common stirring equipment. The conventional solution preparation method is to add the solute into the solvent and stir the solution to dissolve the solute. The common stirring equipment is a planetary high-speed stirrer or other equipment with a stirring function.
When the equipment is a planetary high-speed stirrer, the stirring linear speed is preferably more than 5m/s, and the speed is adjustable. The device has the temperature control function, the temperature of the liquid in the stirring tank is controlled to be less than 40 ℃ by cooling water circulation, and the vacuum degree in the tank can be kept to be less than-80 Kpa. After stirring, the viscosity and solids content were measured. Preferably, a SSBR solution having a solids content of 5% by weight and a viscosity of 200cp to 600cp (NDJ-5S No. 1 rotor 6rpm, 25. + -. 5 ℃) is used. The SSBR powder may be added manually or by a screw feeder. When cyclohexane is added, the automatic feeding system in the prior art is suggested to be used for feeding, the low vacuum degree in the stirring tank can be utilized, the negative pressure suction mode is used for feeding, and manual operation is avoided.
A binder adding device for a lithium ion battery is shown in figures 1 to 3 and comprises a storage tank 1, a feeding pump 2, a first controller 3, a liquid level sensor 4, a filling tank 5, a guide wheel 6, a first filling wheel 7, a second filling wheel 8, a pole piece material belt 9, a feeding port 10, an oven 11, a driving guide wheel 12, a cyclohexane concentration detector 13, a temperature sensor 14 and a second controller 15, wherein one end of the storage tank 1 is connected to the feeding port 10 of the filling tank 5 through the feeding pump 2, a stirring paddle, a storage tank liquid level sensor and an audible and visual alarm are arranged in the storage tank 1, the stirring paddle is connected to a stirring motor, the liquid level sensor 4 is arranged above the inner wall of the filling tank 5, the guide wheel 6, the first filling wheel 7 and the second filling wheel 8 are sequentially arranged in the filling tank 5 from the feeding direction, the oven 11 and the driving guide wheel 12 are arranged at the next station of the filling tank 5, oven 11 internally mounted cyclohexane concentration detection appearance 13 and alarm, oven 11's exit installation temperature sensor 14, initiative leading wheel 12 is driven by action wheel driving motor, the alarm, action wheel driving motor, cyclohexane concentration detection appearance 13 and temperature sensor 14 equal signal connection to No. two controllers 15, agitator motor, storage tank level sensor, audible-visual annunciator, the equal signal connection of charge pump 2 and level sensor 4 is to controller 3, No. two 8 one ends of filling wheel are connected to the motor No. two, by motor drive No. two, on the same reason, filling wheel 7 is by motor drive No. one, motor and No. two motor respectively signal connection to controller 3.
The stirring motor, the first motor, the second motor and the driving wheel driving motor are all servo motors, the stirring motor, the first motor and the second motor are respectively connected to the first controller 3 through a driver signal, the driving wheel driving motor is connected to the second controller 15 through a driving driver signal, and the models of the first motor, the second motor, the driving wheel driving motor, the stirring motor, the driver and the driving driver are Mitsubishi MR-J4 series; the first controller 3 and the second controller 15 are all PLC of Mitsubishi RQ series.
Preferably, oven 11 is a CT-C series hot air circulation oven. The alarm and the audible and visual alarm are the same in type and can be common audible and visual alarms. Preferably, the temperature sensor 14 is an infrared thermometer, and the model of the infrared thermometer is SCIT-1SC/SCIT-2SC, and the infrared thermometer is used for testing the temperature of the surface of the pole piece material belt 9. Preferably, the model of the cyclohexane concentration detector 13 is PTM 600-6. The detector of this model is from taking alarming function. In actual production, other types of cyclohexane concentration detectors with alarm function can be adopted.
The feeding pump 2 can be a diaphragm pump, a rotor pump or a screw pump, preferably, the feeding pump 2 is a KB acid and alkali resistant self-priming pump. Preferably, the liquid level sensor 4 and the storage tank liquid level sensor are floating ball type liquid level sensors.
The guide wheel 6, the first filling wheel 7 and the second filling wheel 8 are the same in outer diameter, the outer diameter ranges from phi 200mm to phi 1000mm, and the centers of the three wheels are at the same horizontal height. The linear speeds of the first filling wheel 7 and the second filling wheel 8 are consistent, and the linear speed of the second filling wheel 8 is greater than the tape moving speed of the pole piece material tape 9. Preferably, the material of the filling tank 5, the guide wheel 6, the first filling wheel 7 and the second filling wheel 8 is SUS304, i.e., stainless steel 304.
The application process of the binder adding device for the lithium ion battery comprises the following steps:
(1) the SSBR solution that will modulate slowly stores in storage tank 1, controller 3 passes through agitator motor control stirring rake and slowly rotates, preferably, the stirring linear velocity is 5m/s, storage tank level sensor gives controller 3 with the liquid level real-time transfer that detects, controller 3 compares the data of gathering with the threshold value of settlement, judge whether the liquid level exceeds the setting value, when controller 3 judges that the SSBR solution of pouring exceeds the settlement height, controller 3 control audible-visual annunciator reports to the police, audible-visual annunciator reports to the police after, the staff obtains the signal that the SSBR solution exceeds standard, then just not put into the SSBR solution in wanting storage tank 1.
(2) The SSBR solution is delivered into a filling tank 5 through a delivery pump 2, and a liquid level sensor 4 is arranged at the upper end of the filling tank 5.
(3) The material is supplied to the filling groove 5 through the material storage tank 1, the feeding pump 2, the liquid level sensor 4 and the PLC control system 3, and the liquid level height of the SSBR liquid in the filling groove 5 is ensured. The liquid level is 10mm-100mm higher than the top of the filling wheel 7 and the filling wheel 8.
(4) Pole pieces to be added with the SSBR are immersed into the filling groove 5 in the form of a pole piece material belt 9 through external traction, guide equipment and the like, and the pole piece material belt 9 penetrates through the filling groove 5 in the belt-passing direction shown in figure 1.
(5) The linear speed of the first filling wheel 7 and the second filling wheel 8 is matched with the tape travelling speed of the pole piece material tape 9.
(6) The pole piece material belt 9 is immersed into the SSBR solution filled in the slot 5, and the SSBR solution is immersed from the pores on the surface of the pole piece material belt 9. The styrene-butadiene emulsion is gradually filled into the pores through a first filling wheel 7 and a second filling wheel 8 respectively. This scheme uses the one-level filling wheel filling mode, and when filling efficiency was low, can adopt the multistage filling wheel mode to add step by step.
(7) The pole piece material belt 9 is arranged at the first filling wheel 7 and used for filling pores in the active material on the side of the first filling wheel 7. The rotating direction of the first filling wheel 7 is consistent with the tape moving direction of the pole piece material tape 9. The rotating linear speed of the first filling wheel 7 is slightly larger than the traveling speed of the pole piece material belt 9, the filling efficiency is improved, and the filling angle A is optimal at 20-60 degrees.
(8) The pole piece material belt 9 is arranged at the second filling wheel 8 and used for filling pores in the active material on the second filling wheel 8 side. The rotating direction of the second filling wheel 8 is consistent with the tape moving direction of the pole piece material tape 9. The rotating linear speed of the second filling wheel 8 is slightly greater than the traveling speed of the pole piece material belt, the filling effect is improved, and the filling angle B is optimal at 20-60 degrees.
(9) The filled pole piece material belt 9 is drawn into an oven 11 through a driving guide wheel 12;
in the drying process, the temperature of the drying oven 11 is required to be set to be less than or equal to 90 ℃, a cyclohexane concentration detector 13 and the cyclohexane concentration detector 13 are arranged in the drying oven 11, collected concentration data are transmitted to the second controller 15 in real time, when the second controller 15 detects that the concentration of cyclohexane exceeds a set threshold value, the second controller 15 controls the driving wheel driving motor to stop rotating, and meanwhile, an alarm is used for giving an alarm;
an infrared thermometer 14 is arranged at an outlet of the oven 11, the temperature of the surface of the pole piece material belt 9 is detected, the temperature of the surface of the pole piece material belt 9 at the outlet of the oven 11 is required to be less than or equal to 50 ℃, the infrared thermometer 14 transmits acquired data to a second controller 15 in real time, the second controller 15 judges whether the temperature exceeds a threshold value according to the acquired setting, when the second controller 15 judges that the temperature of the surface of the pole piece material belt 9 exceeds 50 ℃, the second controller 15 controls the temperature of the oven 11 to be reduced, and simultaneously controls the driving wheel to drive the motor to stop rotating;
the concentration of cyclohexane, the surface temperature of the pole piece material belt 9 at the outlet, the speed of the driving wheel and the temperature of the oven are adjusted in a linkage manner through a second controller 15. The length of the oven 11 is prepared by matching the traveling speed of the pole piece material belt 9 and the solvent evaporation speed. Preferably, the scheme uses a 3-meter oven 11, the temperature is controlled in three sections, and the speed of the driving guide wheel 12 is 1-2 m/min.
(10) And (5) conveying the dried pole piece material belt 9 to the next process.
When the scheme is used, independent storehouse management, ventilation, fire protection, concentration detection alarm and the like are performed. The cyclohexane needs to be recovered after being dried and evaporated, and is not directly discharged into the atmosphere.
The designed addition amount of the SSBR can be realized by matching the porosity of the pole piece to be added, the concentration of the SSBR solution and the filling efficiency. The following method is recommended for achieving the design addition: firstly, measuring the drying porosity of the pole piece material belt 9 to be added and the filling efficiency of the filling device, and calculating the concentration of the SSBR solution to be prepared according to the porosity, the filling efficiency and the designed addition. Preferably, the pole piece material belt 9 has a porosity of 55%, a filling effect of 98%, and an SSBR addition amount of 0.5 wt%, and a 5% SSBR solution is used.
The adding method is favorable for the principle that when the electrode is dried, the SSBR solution is filled into the pores through a filling device after the solvent is evaporated, the solvent is slowly evaporated in the pores, and the SSBR gradually forms a film on the walls of the pores (the surfaces of particles of an adherend).
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method for adding a binder for a lithium ion battery is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: firstly, SSBR is dissolved in cyclohexane to prepare SSBR solution;
step two: soaking a pole piece material belt of the battery into an SSBR solution, and drying the electrode by a wet method, wherein a solvent on the pole piece material belt is evaporated to leave a fine pore;
step three: and filling the SSBR solution into the holes of the pole piece material belt in a roller filling mode, and slowly drying cyclohexane in the holes to gradually form a film to cover the surface of the pole piece material belt.
2. The method for adding the binder for the lithium ion battery according to claim 1, wherein: the parameters of the SSBR solution in the first step are that the solid content is 5wt percent, and the viscosity is in a range of 200cp-600 cp.
3. A binder adding device for a lithium ion battery is characterized in that: the automatic feeding device comprises a storage tank, a controller, a filling groove, a guide wheel, a filling wheel II, an oven, a driving guide wheel, a cyclohexane concentration detector, a temperature sensor and a controller, wherein one end of the storage tank is connected to a feeding port of the filling groove through a feeding pump, a stirring paddle, a storage tank liquid level sensor and an audible and visual alarm are installed in the storage tank, the stirring paddle is connected to a stirring motor, the liquid level sensor is installed above the inner wall of the filling groove, the guide wheel, the filling wheel I and the filling wheel II are sequentially installed in the filling groove from the feeding direction, the oven and the driving guide wheel are installed at the next station of the filling groove, the cyclohexane concentration detector and the alarm are installed in the oven, the temperature sensor is installed at the outlet of the oven, the driving guide wheel is driven by a driving wheel driving motor and is used for driving a pole piece material belt to move, and the alarm, a driving wheel driving motor, Cyclohexane concentration detector and temperature sensor equal signal connection to controller No. two, agitator motor, storage tank level sensor, audible-visual annunciator, feeding pump and level sensor equal signal connection to controller No. one, No. two fill wheel one end and be connected to the motor No. two, fill wheel one end and be connected to the motor No. one, motor No. one and motor No. two respectively signal connection to controller No. one.
4. The device for adding an adhesive for a lithium ion battery according to claim 3, characterized in that: the stirring motor, the first motor, the second motor and the driving wheel driving motor are all servo motors, the stirring motor, the first motor and the second motor are respectively connected to the first controller through a driver signal, the driving wheel driving motor is connected to the second controller through a driving driver signal, and the models of the first motor, the second motor, the driving wheel driving motor, the stirring motor, the driver and the driving driver are Mitsubishi MR-J4 series; the first controller and the second controller are PLC of Mitsubishi RQ series.
5. The device for adding an adhesive for a lithium ion battery according to claim 3, characterized in that: the feeding pump is a diaphragm pump, a rotor pump or a screw pump.
6. The device for adding an adhesive for a lithium ion battery according to claim 3, characterized in that: the guide wheel, the first filling wheel and the second filling wheel have the same outer diameter, and the centers of the guide wheel, the first filling wheel and the second filling wheel are positioned at the same horizontal height.
7. The device for adding an adhesive for a lithium ion battery according to claim 6, characterized in that: the outer diameter ranges of the guide wheel, the first filling wheel and the second filling wheel are all phi 200 mm-phi 1000 mm.
8. The device for adding an adhesive for a lithium ion battery according to claim 6, characterized in that: the linear speeds of the first filling wheel and the second filling wheel are consistent, and the linear speed of the second filling wheel is greater than the tape moving speed of the pole piece material tape.
9. The device for adding an adhesive for a lithium ion battery according to claim 3, characterized in that: the filling angle between the first filling wheel and the pole piece material belt is A, and the angle range of A is 20-60 degrees.
10. The device for adding an adhesive for a lithium ion battery according to claim 3, characterized in that: the filling angle between the second filling wheel and the pole piece material belt is B, and the angle range of B is 20-60 degrees.
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