CN109840382B - Pump speed calculating method and device of extrusion coating machine and storage medium - Google Patents
Pump speed calculating method and device of extrusion coating machine and storage medium Download PDFInfo
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Abstract
The invention discloses a method, a device and a storage medium for calculating the pump speed of an extrusion coater, wherein the method for calculating the pump speed of the extrusion coater comprises the following steps: acquiring slurry and coating related parameters; determining a relation q2=kq1+c satisfied by a first slurry ejection amount Q1 of the slurry transfer pump and a second slurry ejection amount Q2 of the coating device according to the slurry parameters and the coating parameters; and calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is directly proportional to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K. Through confirming the relation between the first ejection amount of slurry delivery pump and the second ejection amount of coating device to and calculate extrusion coater pump speed according to slurry parameter and the coating parameter who obtains, convenient and fast, and can save raw and other materials, the cost is practiced thrift.
Description
Technical Field
The embodiment of the invention relates to extrusion coating technology, in particular to a method and a device for calculating the pump speed of an extrusion coater and a storage medium.
Background
At present, the lithium ion battery is widely applied to various fields such as various digital products, power automobiles, unmanned aerial vehicles, energy storage and the like. The coating of the electrode is a key ring in lithium battery production, and extrusion coating is widely used in lithium ion battery coating production due to higher coating precision.
In extrusion coating technology, the output of the slurry is controlled by a screw pump, the pump speed of which determines the coating weight of the electrode. At present, the target pump speed of the screw pump needs to be tested repeatedly in an actual extrusion coating system for a plurality of times, and finally the target pump speed matched with the weight of the target electrode is obtained.
However, the prior art approaches to achieving the target pump speed are slow and waste raw materials, increasing costs.
Disclosure of Invention
The invention provides a method, a device and a storage medium for calculating the pump speed of an extrusion coating machine, so as to realize the rapid determination of the pump speed of a screw pump, reduce the loss of raw materials and save the production cost.
In a first aspect, an embodiment of the present invention provides a method for calculating a pump speed of an extrusion coater, where the extrusion coater includes a slurry transfer pump and a coating device, and the slurry transfer pump is communicated with the coating device; the method for calculating the pump speed of the extrusion coater comprises the following steps:
acquiring slurry and coating related parameters;
determining a relation q2=kq1+c satisfied by a first slurry ejection amount Q1 of the slurry transfer pump and a second slurry ejection amount Q2 of the coating device according to the slurry parameters and the coating parameters;
and calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is directly proportional to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K.
Wherein the slurry parameters comprise slurry density, slurry solid content and slurry discharge volume of single action of a slurry conveying pump;
the coating parameters comprise coating length percentage, target coating surface density, coating running speed of a coating device and coating width; the coating running speed of the coating device is the coating speed of the coating device along the first direction; the coating width is the coating width of the coating device along the second direction, and the first direction is perpendicular to the second direction;
the first slurry ejection amount is also proportional to the slurry density, the coating length percentage, and the slurry ejection volume of a single action of the slurry transfer pump, and the second slurry ejection amount is proportional to the target coating surface density, the coating width, the coating travel speed of the coating device, and the coating length percentage.
Wherein determining, according to the slurry parameters and the coating parameters, a relationship q2=kq1+c that the first slurry discharge amount Q1 of the slurry transfer pump and the second slurry discharge amount Q2 of the coating device satisfy, includes:
and performing curve fitting on the relation between the first slurry discharge amount Q1 and the second slurry discharge amount Q2 according to the slurry density, the slurry solid content and the slurry discharge volume of single action of the slurry conveying pump and according to the coating length percentage, the target coating surface density, the coating running speed of the coating device and the coating width so as to obtain coefficients K and C.
Wherein, the pump speed of the extrusion coater is adopted by the following formula:
n＝(ρ m Lvα/W t ％-C)/(Kaρα)；
wherein n represents the pump speed of the extrusion coater; ρ m Representing a target coating surface density; l represents the coating width; v represents the coating running speed of the coating device; alpha represents the coating percentage; w (W) t % represents the slurry solids content; a represents the slurry discharge volume of a single action of the slurry transfer pump; ρ represents the slurry density.
Wherein, the slurry transfer pump is a screw pump, and the coating device is a coating die head.
Wherein the volume of the slurry discharged by the single action of the slurry transfer pump is the volume of the slurry discharged per rotation of the screw pump.
The coating percentage is the ratio of the length of a coating slurry area to the sum of the length of the coating slurry area and the length of a blank area, the length of the coating slurry area is the total length of the coating slurry coated on the substrate by the coating device along the first direction, and the length of the blank area is the length of the blank area of the substrate along the first direction.
In a second aspect, an embodiment of the present invention further provides a device for calculating a pump speed of an extrusion coater, where the extrusion coater includes a slurry transfer pump and a coating device, and the slurry transfer pump is communicated with the coating device; the extrusion coater pump speed calculation device includes:
the acquisition module is used for acquiring the slurry and the coating related parameters;
a relation determining module, configured to determine, according to the slurry parameter and the coating parameter, a relation q2=kq1+c that the first slurry discharge amount Q1 of the slurry transfer pump and the second slurry discharge amount Q2 of the coating device satisfy;
and the pump speed calculating module is used for calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is in direct proportion to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K.
The pump speed module is specifically used for: the pump speed of the extrusion coater was calculated using the following formula:
n＝(ρ m Lvα/W t ％-C)/(Kaρα)；
wherein n represents the pump speed of the extrusion coater; ρ m Representing a target coating surface density; l represents the coating width; v represents the coating running speed of the coating device; alpha represents the coating percentage; w (W) t % represents the slurry solids content; a represents the slurry discharge volume of a single action of the slurry transfer pump; ρ represents the slurry density.
In a third aspect, an embodiment of the present invention further provides a computer readable storage medium having stored thereon a computer program, wherein the program when executed by a processor implements the extrusion coater pump speed calculation method provided in the first aspect.
The invention provides a method, a device and a storage medium for calculating the pump speed of an extrusion coater, wherein the method for calculating the pump speed of the extrusion coater comprises the following steps: acquiring slurry and coating related parameters; determining a relation q2=kq1+c satisfied by a first slurry ejection amount Q1 of the slurry transfer pump and a second slurry ejection amount Q2 of the coating device according to the slurry parameters and the coating parameters; and calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is directly proportional to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K. Through confirming the relation between the first ejection amount of slurry delivery pump and the second ejection amount of coating device to and calculate extrusion coater pump speed according to slurry parameter and the coating parameter who obtains, convenient and fast, and can save raw and other materials, the cost is practiced thrift.
Drawings
FIG. 1 is a flowchart of a method for calculating a pump speed of an extrusion coater according to an embodiment of the present invention;
FIG. 2 is a schematic view of a part of a structure of an extrusion coater according to an embodiment of the present invention;
FIG. 3 is a flowchart of another method for calculating the pump speed of an extrusion coater according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of a pole piece substrate provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram of a pump speed calculating device of an extrusion coater according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Fig. 1 is a flowchart of a method for calculating a pump speed of an extrusion coater according to an embodiment of the present invention, and fig. 2 is a schematic view of a part of a structure of an extrusion coater according to an embodiment of the present invention, and the method may be performed by a device for calculating a pump speed of an extrusion coater according to any embodiment of the present invention, referring to fig. 1 and fig. 2, wherein the extrusion coater includes a slurry transfer pump 210 and a coating device 220, and an arrow direction in fig. 2 represents a slurry flow direction, and the slurry transfer pump 210 is communicated with the coating device 220; the method for calculating the pump speed of the extrusion coating machine comprises the following steps:
step 110, acquiring slurry and coating related parameters;
the extrusion coater generally includes a slurry storage device (not shown), a slurry transfer pump 210, a coating device 220, and a pipe line communicating between the slurry storage device and the slurry transfer pump 210, a pipe line communicating between the slurry transfer pump 210 and the coating device 220, and a pipe line communicating between the coating device 220 and the slurry storage device, wherein valves for controlling the pipe line communication and interception may be included in each pipe line. Extrusion coater cloth is widely used for coating production of lithium ion batteries, and can be particularly used for coating electrodes of lithium ion batteries. The applied paste has different parameters depending on the needs of the actual battery electrode, for example, paste related parameters, such as paste density, may be different for the positive and negative electrodes. Similarly, coating related parameters, such as coating percentage, may be different depending on the needs of the actual battery electrode. The pump speed of the extrusion coater determines the coating weight of the electrode, and the slurry parameters and coating parameters affect the coating weight of the electrode as well, and in order to calculate the pump speed of the slurry transfer pump 210 from the target coating weight, it is necessary to obtain parameters related to the slurry and coating.
Step 120, determining a relationship q2=kq1+c satisfied by the first slurry discharge amount Q1 of the slurry transfer pump 210 and the second slurry discharge amount Q2 of the coating device 220 according to the slurry parameters and the coating parameters;
due to factors such as filtration retention, coating port leakage and head-to-tail and edge thinning of the coating device 220, the first slurry discharge amount Q1 of the slurry transfer pump 210 and the second slurry discharge amount Q2 of the coating device 220 are not in equal relation but in a certain coefficient relation, specifically satisfying the relation q2=kq1+c. Wherein, the first slurry ejection amount Q1 is related to the slurry parameter, the coating parameter and the pump speed, and the first slurry ejection amount Q1 has corresponding equivalent relation with the specific slurry parameter, the coating parameter and the pump speed; the second slurry discharge amount Q2 is related to the slurry parameter and the coating parameter, and the second slurry discharge amount Q2 has an equivalent relation to the specific slurry parameter and the coating parameter.
The coefficient K and the coefficient C in the above-described relational expression can be determined from the slurry parameters and the coating parameters. Alternatively, a curve fitting method, such as a least squares method, is used to obtain the coefficients K and C.
Step 130, calculating the pump speed of the slurry transfer pump 210 according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is directly proportional to the pump speed of the slurry transfer pump 210, and the pump speed of the slurry transfer pump 210 is inversely related to the coefficient K.
The pump speed of the slurry transfer pump 210 can be obtained by substituting the slurry parameters and the coating parameters related to the first slurry discharge amount Q1, the slurry parameters and the coating parameters related to the second slurry discharge amount Q2, and the coefficients K and C calculated in step 120 into the relational expression q2=kq1+c. By adopting the pump speed calculating method, the pump speed of the slurry conveying pump 210 of the extrusion coater can be calculated quickly, and the aim pump speed can be obtained without repeated attempts before coating the electrode like the prior art, thereby being convenient and quick and saving raw materials.
The method for calculating the pump speed of the extrusion coating machine provided by the embodiment of the invention comprises the following steps: acquiring slurry and coating related parameters; determining a relation q2=kq1+c satisfied by a first slurry ejection amount Q1 of the slurry transfer pump and a second slurry ejection amount Q2 of the coating device according to the slurry parameters and the coating parameters; and calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is directly proportional to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K. Through confirming the relation between the first ejection amount of slurry delivery pump and the second ejection amount of coating device to and calculate extrusion coater pump speed according to slurry parameter and the coating parameter who obtains, convenient and fast, and can save raw and other materials, the cost is practiced thrift.
Fig. 3 is a flowchart of another method for calculating the pump speed of the extrusion coating machine according to the embodiment of the present invention, which is based on the method for calculating the pump speed of the extrusion coating machine according to the embodiment, and further provides an alternative method for calculating the pump speed of the extrusion coating machine.
The slurry parameters comprise slurry density, slurry solid content and slurry discharge volume of single action of a slurry conveying pump;
fig. 4 is a schematic view of a pole piece substrate according to an embodiment of the present invention. The coating parameters comprise coating length percentage, target coating surface density, coating running speed of a coating device and coating width; the coating running speed of the coating device is the coating speed of the coating device along the first direction x; the coating width is the coating width d of the coating device along the second direction y, and the first direction is perpendicular to the second direction;
the first slurry ejection amount is also proportional to the slurry density, the coating length percentage, and the slurry ejection volume of a single action of the slurry transfer pump, and the second slurry ejection amount is proportional to the target coating surface density, the coating width, the coating travel speed of the coating device, and the coating length percentage.
For example, when the slurry transfer pump is a screw pump, the slurry discharge volume of a single action of the slurry transfer pump may be the slurry discharge volume corresponding to one rotation of the screw pump.
Referring to fig. 4, the coating percentage is a ratio of a length of the coating paste region 410 to a sum of lengths of the coating paste region 410 and the blank region 420, the length of the coating paste region 410 is a total length of the coating paste applied on the substrate by the coating apparatus along the first direction x (for example, a pole piece substrate shown in fig. 4, the total length of the coating paste region 410 is a1+a2+a3), the length of the blank region 420 is a length of the substrate blank region 420 along the first direction x (for example, a pole piece substrate shown in fig. 4, the total length of the coating paste region 410 is b1+b2+b3+b4).
Referring to fig. 3, the method for calculating the pump speed of the extrusion coater according to the present embodiment includes:
step 310, obtaining slurry density, slurry solid content and slurry discharge volume of single action of a slurry conveying pump; the coating length percentage, the target coating surface density and the coating running speed and the coating width of a coating device are obtained;
step 320, performing curve fitting on the relation between the first slurry discharge amount Q1 and the second slurry discharge amount Q2 according to the slurry density, the slurry solid content, the slurry discharge volume of the single operation of the slurry transfer pump, and according to the coating length percentage, the target coating surface density, the coating running speed of the coating device, and the coating width, so as to obtain coefficients K and C.
Specifically, when curve fitting is performed, after the slurry density, the slurry solid content, the slurry discharge volume of a single operation of the slurry transfer pump, and the coating length percentage, the target coating surface density, the coating travel speed of the coating apparatus, and the coating width are obtained, a plurality of sets of values of the first slurry discharge amount Q1 and the second slurry discharge amount Q2 are obtained, and each set of values of the first slurry discharge amount Q1 and the second slurry discharge amount Q2 is respectively brought into the relational expression q2=kq1+c, and the values of the coefficient K and the coefficient C are obtained by the least square method.
Step 330, calculating the pump speed of the extrusion coater according to the slurry density, the slurry solid content, the slurry discharge volume of a single action of the slurry transfer pump, and according to the coating length percentage, the target coating surface density, the coating running speed of the coating device, the coating width, and coefficients K and C.
Optionally, step 130 and step 330 in the foregoing embodiment include: the pump speed of the extrusion coater was calculated using the following formula:
n＝(ρ m Lvα/W t ％-C)/(Kaρα)；
wherein n represents the pump speed of the extrusion coater; ρ m Representing a target coating surface density; l represents the coating width; v represents the coating running speed of the coating device; alpha represents the coating percentage; w (W) t % represents the slurry solids content; a represents the slurry discharge volume of a single action of the slurry transfer pump; ρ represents the slurry density.
The pump speed calculation formula can be derived from the proportional relationship between the first slurry discharge amount Q1 and the slurry density, the coating width, the coating travel speed of the coating device, and the coating length percentage, and the relationship q2=kq1+c satisfied by the first slurry discharge amount Q1 and the second slurry discharge amount Q2. By using the formula n= (ρ) m Lvα/W t The pump speed of the corresponding extrusion coater can be calculated according to the target surface density required by the pole piece,% -C)/(Kaρalpha), the target pump speed of the slurry conveying pump can be obtained quickly, the raw materials can be saved, and the cost is saved.
On the basis of the scheme, the slurry conveying pump is a screw pump, and the coating device is a coating die head.
The screw pump has stable flow, small pressure pulsation, self-priming capability, low noise, high efficiency, long service life and reliable operation; the device has the outstanding advantages that vortex is not formed when the medium is conveyed, and the device is insensitive to the viscosity of the medium, so that the device can be suitable for conveying high-viscosity media such as slurry and the like. Alternatively, the volume of slurry discharged in a single action of the slurry transfer pump is the volume of slurry discharged per revolution of the screw pump.
The embodiment of the invention also provides a device for calculating the pump speed of the extrusion coating machine, and fig. 5 is a schematic structural diagram of the device for calculating the pump speed of the extrusion coating machine, which is provided by the embodiment of the invention, and can execute the method for calculating the pump speed of the extrusion coating machine, which is provided by any embodiment of the invention, wherein the extrusion coating machine comprises a slurry conveying pump and a coating device, and the slurry conveying pump is communicated with the coating device; referring to fig. 5, the extrusion coater pump speed calculating apparatus includes:
an acquisition module 510 for acquiring slurry and coating related parameters;
a relationship determining module 520, configured to determine, according to the slurry parameter and the coating parameter, a relationship q2=kq1+c that the first slurry discharge amount Q1 of the slurry transfer pump and the second slurry discharge amount Q2 of the coating device satisfy;
the pump speed calculating module 530 is configured to calculate a pump speed of the extrusion coater according to the slurry parameter, the coating parameter, and the coefficients K and C, wherein the first slurry ejection amount is proportional to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K.
Optionally, the pump speed module 530 is specifically configured to: the pump speed of the extrusion coater was calculated using the following formula:
n＝(ρ m Lvα/W t ％-C)/(Kaρα)；
wherein n represents the pump speed of the extrusion coater; ρ m Representing a target coating surface density; l represents the coating width; v represents the coating running speed of the coating device; alpha represents the coating percentage; w (W) t % represents the slurry solids content; a represents the slurry discharge volume of a single action of the slurry transfer pump; ρ represents the slurry density.
According to the extrusion coating machine pump speed calculating device provided by the embodiment of the invention, the slurry and coating related parameters are obtained through the obtaining module; the relation determining module determines a relation Q2 = KQ1+C which is satisfied by a first slurry ejection quantity Q1 of the slurry conveying pump and a second slurry ejection quantity Q2 of the coating device according to the slurry parameters and the coating parameters; the pump speed calculation module calculates the pump speed of the extrusion coater according to slurry parameters, coating parameters and coefficients K and C, wherein the first slurry ejection amount is in direct proportion to the pump speed of the extrusion coater, the pump speed of the extrusion coater is in negative correlation with the coefficient K, the pump speed of the extrusion coater is calculated conveniently and rapidly, raw materials can be saved, and the cost is saved.
Fig. 6 is a schematic structural diagram of an apparatus according to an embodiment of the present invention, as shown in fig. 6, where the apparatus includes:
one or more processors 610;
a storage 620, for storing one or more programs,
the one or more programs, when executed by the one or more processors 610, cause the one or more processors 610 to implement the extrusion coater pump speed calculation method provided by the above-described embodiments of the present invention.
The device may also include input means 630 and output means 640. The processor 610, memory, input means 630 and output means 640 in the device may be connected by a bus or otherwise, for example in fig. 6.
The storage 620 is a non-transitory computer readable storage medium, and may be used to store software programs, computer executable programs, and modules, such as program instructions/modules corresponding to a pump speed calculation method of an extrusion coater in an embodiment of the present invention (e.g., the acquisition module 510, the relationship determination module 520, and the pump speed calculation module 530 shown in fig. 5. The processor 610 executes the software programs, instructions, and modules stored in the storage 620 to perform various functional applications and data processing of the apparatus, that is, to implement a pump speed calculation method of an extrusion coater in an embodiment of the method, that is:
acquiring slurry and coating related parameters;
determining a relation q2=kq1+c satisfied by a first slurry ejection amount Q1 of the slurry transfer pump and a second slurry ejection amount Q2 of the coating device according to the slurry parameters and the coating parameters;
and calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is directly proportional to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K.
The storage 620 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created according to the use of the device, etc. Further, the storage 620 may be a memory, which may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the storage 620 may optionally include storage 620 located remotely from the processor 610, such remote storage 620 being connectable to the terminal device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 630 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the apparatus. The output device 640 may include an output interface or the like.
The embodiment of the invention provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, realizes the method for calculating the pump speed of the extrusion coating machine, which is provided by the embodiment of the invention:
acquiring slurry and coating related parameters;
determining a relation q2=kq1+c satisfied by a first slurry ejection amount Q1 of the slurry transfer pump and a second slurry ejection amount Q2 of the coating device according to the slurry parameters and the coating parameters;
and calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is directly proportional to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or on a device provided by this embodiment. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (7)
1. A method for calculating the pump speed of an extrusion coater, which is characterized in that the extrusion coater comprises a slurry conveying pump and a coating device, wherein the slurry conveying pump is communicated with the coating device; the method for calculating the pump speed of the extrusion coater comprises the following steps:
acquiring slurry and coating related parameters; the slurry parameters comprise slurry density, slurry solid content and slurry discharge volume of single action of the slurry conveying pump; the coating parameters comprise coating length percentage, target coating surface density, coating running speed of a coating device and coating width; the coating running speed of the coating device is the coating speed of the coating device along the first direction; the coating width is the coating width of the coating device along a second direction, and the first direction is perpendicular to the second direction;
determining a relation q2=kq1+c satisfied by a first slurry ejection amount Q1 of the slurry transfer pump and a second slurry ejection amount Q2 of the coating device according to the slurry parameters and the coating parameters;
the first slurry ejection amount is also in direct proportion to the slurry density, the coating length percentage, the slurry ejection volume of single action of the slurry conveying pump and the slurry solid content, and the second slurry ejection amount is in direct proportion to the target coating surface density, the coating width, the coating running speed of the coating device and the coating length percentage;
obtaining values of a coefficient K and a coefficient C through curve fitting based on the slurry parameters and the coating parameters;
calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the pump speed of the extrusion coater is inversely related to the coefficient K;
the pump speed of the extrusion coater is as follows:
n＝(ρ m Lvα/W t ％-C)/(Kaρα)；
wherein n represents the pump speed of the extrusion coater; ρ m Representing a target coating surface density; l represents the coating width; v represents the coating running speed of the coating device; alpha represents the coating percentage; w (W) t % represents the slurry solids content; a represents the slurry discharge volume of a single action of the slurry transfer pump; ρ represents the slurry density.
2. The method according to claim 1, wherein determining a relation q2=kq1+c that the first paste ejection amount Q1 of the paste transfer pump satisfies with the second paste ejection amount Q2 of the coating device according to the paste parameters and the coating parameters, comprises:
and performing curve fitting on the relation between the first slurry discharge amount Q1 and the second slurry discharge amount Q2 according to the slurry density, the slurry solid content, the slurry discharge volume of single action of the slurry conveying pump, the coating length percentage, the target coating surface density, the coating running speed of a coating device and the coating width so as to obtain the coefficients K and C.
3. The method of calculating a pump speed of an extrusion coater according to claim 1, wherein the slurry transfer pump is a screw pump and the coating device is a coating die.
4. A method of calculating a pump speed of an extrusion coater according to claim 3 wherein the single action of the slurry transfer pump discharges a slurry volume of slurry per revolution of the screw pump.
5. The method of claim 1, wherein the coating percentage is a ratio of a coating paste zone length to a sum of the coating paste zone length and a blank zone length, the coating paste zone length being a total length of the coating paste applied by the coating device to the substrate in the first direction, the blank zone length being a length of the substrate blank zone in the first direction.
6. A pump speed calculating device of an extrusion coater, which is characterized in that the extrusion coater comprises a slurry conveying pump and a coating device, wherein the slurry conveying pump is communicated with the coating device; the extrusion coater pump speed calculation device includes:
the acquisition module is used for acquiring the slurry and the coating related parameters; the slurry parameters comprise slurry density, slurry solid content and slurry discharge volume of single action of the slurry conveying pump; the coating parameters comprise coating length percentage, target coating surface density, coating running speed of a coating device and coating width; the coating running speed of the coating device is the coating speed of the coating device along the first direction; the coating width is the coating width of the coating device along a second direction, and the first direction is perpendicular to the second direction;
a relation determining module, configured to determine, according to a slurry parameter and a coating parameter, a relation q2=kq1+c that the first slurry discharge amount Q1 of the slurry transfer pump and the second slurry discharge amount Q2 of the coating device satisfy; the method is also used for obtaining the values of the coefficient K and the coefficient C through curve fitting based on the slurry parameters and the coating parameters; the first slurry ejection amount is also in direct proportion to the slurry density, the coating length percentage, the slurry ejection volume of single action of the slurry conveying pump and the slurry solid content, and the second slurry ejection amount is in direct proportion to the target coating surface density, the coating width, the coating running speed of the coating device and the coating length percentage;
the pump speed calculating module is used for calculating the pump speed of the extrusion coater according to the slurry parameters, the coating parameters and the coefficients K and C, wherein the first slurry ejection amount is in direct proportion to the pump speed of the extrusion coater, and the pump speed of the extrusion coater is inversely related to the coefficient K;
the pump speed module is specifically used for: the pump speed of the extrusion coater is as follows:
n＝(ρ m Lvα/W t ％-C)/(Kaρα)；
wherein n represents the pump speed of the extrusion coater; ρ m Representing a target coating surface density; l represents the coating width; v represents the coating running speed of the coating device; alpha represents the coating percentage; w (W) t % represents the slurry solids content; a represents the slurry discharge volume of a single action of the slurry transfer pump; ρ represents the slurry density.
7. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the extrusion coater pump speed calculation method according to any one of claims 1 to 5.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590463A (en) * | 2009-01-22 | 2009-12-02 | 深圳市浩能科技有限公司 | A kind of extrusion coater utilizes the device and the control method thereof of split flow pump control coating clearance |
| CN103551286A (en) * | 2013-11-15 | 2014-02-05 | 四川长虹电源有限责任公司 | Lithium battery coating feeding system and coating method thereof |
| CN103682256A (en) * | 2013-12-27 | 2014-03-26 | 山东精工电子科技有限公司 | Coating method for lithium titanate battery cathode piece |
| JP2017170311A (en) * | 2016-03-23 | 2017-09-28 | 日産自動車株式会社 | Slurry coating method |
| CN107952628A (en) * | 2016-10-17 | 2018-04-24 | 柯国平 | The coating control method and extrusion coater of extrusion coater |
| CN108763831A (en) * | 2018-06-25 | 2018-11-06 | 国家电网有限公司 | A kind of pump turbine PARAMETERS IN THE LINEAR MODEL discrimination method |
-
2019
- 2019-02-15 CN CN201910118811.4A patent/CN109840382B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590463A (en) * | 2009-01-22 | 2009-12-02 | 深圳市浩能科技有限公司 | A kind of extrusion coater utilizes the device and the control method thereof of split flow pump control coating clearance |
| CN103551286A (en) * | 2013-11-15 | 2014-02-05 | 四川长虹电源有限责任公司 | Lithium battery coating feeding system and coating method thereof |
| CN103682256A (en) * | 2013-12-27 | 2014-03-26 | 山东精工电子科技有限公司 | Coating method for lithium titanate battery cathode piece |
| JP2017170311A (en) * | 2016-03-23 | 2017-09-28 | 日産自動車株式会社 | Slurry coating method |
| CN107952628A (en) * | 2016-10-17 | 2018-04-24 | 柯国平 | The coating control method and extrusion coater of extrusion coater |
| CN108763831A (en) * | 2018-06-25 | 2018-11-06 | 国家电网有限公司 | A kind of pump turbine PARAMETERS IN THE LINEAR MODEL discrimination method |
Non-Patent Citations (1)
| Title |
|---|
| 动力锂电池极片挤压式涂布系统设计与实验研究;刘平文等;《机械工程师》;20180910(第09期);全文 * |
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