Battery pole piece manufacturing equipment, battery pole piece production control system and method

Abstract

The present invention provides a battery pole piece manufacturing equipment, a battery pole piece production control system and a method, which relate to the field of battery manufacturing technology. The measuring device contained in the battery pole piece manufacturing equipment is embedded at the outlet of the coating slit of the coating die head; it includes: a first transducer, a second transducer and a third transducer; the first transducer is an ultrasonic element with transmitting and receiving functions, the first transducer transmits and receives a first ultrasonic wave vertically to the coating slit, and determines the fluid surface density of the battery pole piece in the coating slit according to the time difference between transmitting and receiving. The second transducer is an ultrasonic element with a transmitting function, and the third transducer is an ultrasonic element with a receiving function; the flow rate of the fluid in the coating slit is determined according to the time difference between the sending and receiving of the second ultrasonic wave. By arranging a plurality of transducers at the die head of the coating die head, the measurement of the fluid surface density and the fluid flow rate of the battery pole piece can be realized in real time and accurately, thereby greatly reducing the length of the uncontrollable area.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a battery pole piece manufacturing device, a battery pole piece production control system and a method. Background Art

[0002] In the current lithium battery production process, when preparing electrode sheets, a slot extrusion coater is generally used to coat the battery slurry; the uniformity of the coating area directly affects the performance of the lithium battery. In order to determine whether the coating area is uniform, it is necessary to measure the wet film on the electrode sheet after coating, and then enter the oven to measure the dry film after drying. The measurement process mainly measures the coating through X-rays and β-rays.

[0003] Since there is a long distance between the wet film measurement and the extrusion coating outlet, and the pole piece's tape speed is relatively fast, generally 20-80m / min, there is a certain lag in the judgment of the coating effect of the coating machine, which will lead to waste of coating when the spraying parameters are not good. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a battery pole piece manufacturing equipment, a battery pole piece production control system and a method. The battery pole piece manufacturing equipment utilizes its battery pole piece measuring equipment to realize the arrangement of multiple transducers at the die head of the coating die head. Through these transducers, the fluid surface density and fluid flow rate of the battery pole piece can be accurately measured in real time, thereby greatly reducing the length of the uncontrollable area.

[0005] In a first aspect, an embodiment of the present invention provides a battery pole piece manufacturing device, the battery pole piece manufacturing device comprises a battery pole piece measuring device, the battery pole piece measuring device is embedded at the exit of the coating slit of the coating die head; the battery pole piece measuring device comprises: a first transducer, a second transducer and a third transducer;

[0006] The first transducer is an ultrasonic element with transmitting and receiving functions, and is vertically arranged on the upper side or the lower side of the coating slit. The first transducer transmits a first ultrasonic wave vertically to the coating slit, and determines the surface density of the fluid of the battery electrode in the coating slit according to the time difference of the received first ultrasonic wave.

[0007] The second transducer is an ultrasonic element with a transmitting function, and the third transducer is an ultrasonic element with a receiving function; the second transducer and the third transducer are arranged on the same side of the coating slit, and after the second transducer transmits a second ultrasonic wave to the fluid of the battery electrode in the coating slit, the second ultrasonic wave is reflected to the third transducer, and the flow rate of the fluid in the coating slit is determined based on the time difference of the received second ultrasonic wave.

[0008] In one embodiment, the battery pole piece measuring device is located at the protruding lip of the coating die head and is located in the direction of fluid flow in the coating slit;

[0009] The first transducer, the second transducer and the third transducer are embedded in the body of the coating die head, and the installation positions of the first transducer, the second transducer and the third transducer are all flush with the wall surface of the coating slit.

[0010] In one embodiment, the first transducer is disposed upstream of the second transducer and the third transducer.

[0011] In one embodiment, the first transducer is disposed downstream of the second transducer and the third transducer.

[0012] In one embodiment, the first transducer uses the following formula when calculating the surface density of the fluid in the coating slit:

[0013] ;

[0014] in, is the surface density of the fluid; is the air density; is the propagation speed of the first ultrasonic wave in the air; is the propagation frequency of the first ultrasonic wave in the fluid; is the sound wave intensity attenuation rate after the first ultrasonic wave penetrates the fluid.

[0015] In one embodiment, the second transducer and the third transducer use the following formula to calibrate the propagation speed of the second ultrasonic wave in the fluid during the process of calculating the flow rate of the fluid in the coating slit:

[0016] ;

[0017] in, ; ; ; d is the distance between the second transducer and the third transducer; h is the depth of the fluid; L is the propagation distance of the second ultrasonic wave from the second transducer to the third transducer; c is the propagation speed of the second ultrasonic wave in the fluid; v is the flow rate of the fluid; is the emission angle of the second ultrasonic wave.

[0018] In a second aspect, an embodiment of the present invention provides a battery pole piece production control system, the battery pole piece production control system comprising: a coating die head, a substrate, an adjustment mechanism, an oven, and the battery pole piece manufacturing equipment mentioned in the first aspect; wherein the battery pole piece manufacturing equipment comprises a battery pole piece measuring device, and the battery pole piece measuring device is embedded at the outlet of the coating slit of the coating die head;

[0019] The substrate is used to receive the fluid coating of the battery pole piece;

[0020] The oven is arranged in the upstream conveying direction of the substrate;

[0021] The coating die is arranged in the downstream conveying direction of the substrate;

[0022] The regulating mechanism is arranged at the coating slit of the coating die head and is used for controlling the coating rate of the fluid coating in the coating slit.

[0023] In one embodiment, the coating die head is provided with a host computer interface; the host computer interface is respectively connected to the data output ends of the first transducer, the second transducer and the third transducer in the battery electrode piece measuring device.

[0024] In one embodiment, the battery pole piece production control system further includes: a host computer;

[0025] The output end of the host computer is connected to the control end of the regulating mechanism;

[0026] The input end of the host computer is connected to the host computer interface.

[0027] In a third aspect, an embodiment of the present invention provides a battery pole piece production control method, which is applied to the battery pole piece production control system mentioned in the second aspect; the method comprises:

[0028] When the measurement instruction is detected, the output parameters of the battery electrode measuring device in the battery electrode production control system are obtained in real time;

[0029] Obtaining the fluid surface density and fluid flow rate of the battery electrode in the output parameters, and determining the control parameters of the regulating mechanism according to the fluid surface density and the fluid flow rate;

[0030] The coating rate of the fluid coating in the coating slot is controlled based on the control parameters.

[0031] In a fourth aspect, an embodiment of the present invention further provides an electronic device, comprising a processor and a memory, wherein the memory stores computer executable instructions that can be executed by the processor, and the processor executes the computer executable instructions to implement the steps of the battery electrode production control method provided in the third aspect.

[0032] In a fifth aspect, an embodiment of the present invention further provides a storage medium storing computer executable instructions. When the computer executable instructions are called and executed by a processor, the computer executable instructions prompt the processor to implement the steps of the battery electrode production control method provided in the third aspect.

[0033] The embodiments of the present invention provide a battery pole piece manufacturing device, a battery pole piece production control system and a method, wherein the battery pole piece manufacturing device includes a battery pole piece measuring device, wherein the battery pole piece measuring device is embedded at the outlet of the coating slit of the coating die head; the battery pole piece measuring device includes: a first transducer, a second transducer and a third transducer. The first transducer is an ultrasonic element with transmitting and receiving functions, and the first transducer is vertically arranged on the upper side or the lower side of the coating slit. The first transducer vertically transmits a first ultrasonic wave to the coating slit, and determines the surface density of the fluid of the battery pole piece in the coating slit according to the time difference of the received first ultrasonic wave. The second transducer is an ultrasonic element with a transmitting function, and the third transducer is an ultrasonic element with a receiving function; the second transducer and the third transducer are arranged on the same side of the coating slit, and after the second transducer transmits a second ultrasonic wave to the fluid of the battery pole piece in the coating slit, the second ultrasonic wave is reflected to the third transducer, and the flow rate of the fluid in the coating slit is determined according to the time difference of the received second ultrasonic wave. The device is equipped with multiple transducers at the die head of the coating die, through which the fluid surface density and fluid flow rate of the battery electrode can be accurately measured in real time, thereby greatly reducing the length of the uncontrollable area.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic diagram of the structure of a battery pole piece manufacturing device provided by an embodiment of the present invention;

[0038] Figure 2 A schematic diagram of the structure of another battery pole piece manufacturing device provided by an embodiment of the present invention;

[0039] Figure 3 A positional relationship diagram of a battery pole piece measuring device and a coating die head in a battery pole piece manufacturing device provided in an embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the position of a transducer in a battery pole piece manufacturing device provided by an embodiment of the present invention;

[0041] Figure 5 A schematic diagram of a formula for calculating the flow rate of a fluid in a coating slit in a battery electrode manufacturing device provided in an embodiment of the present invention;

[0042] Figure 6 A schematic diagram of the structure of a battery pole piece production control system provided by an embodiment of the present invention;

[0043] Figure 7 A schematic diagram of the structure of a coating die head in a battery pole piece production control system provided by an embodiment of the present invention;

[0044] Figure 8 A flow chart of a battery electrode production control method provided by an embodiment of the present invention

[0045] Fig. 9 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0046] icon:

[0047] 10-first transducer; 20-second transducer; 30-third transducer; 10a-first ultrasonic wave; 23-second ultrasonic wave;

[0048] 50a-coating die head; 50b-substrate; 50c-oven; 50d-adjustment mechanism; 50e-battery pole piece measuring device; 50f-host computer interface; 50g-host computer;

[0049] 3A-lip; 3B-upper coating slit; 3C-lower coating slit; 3D-upper feed port; 3E-upper cavity; 3F-lower feed port; 3G-lower cavity;

[0050] 101 - processor; 102 - memory; 103 - bus; 104 - communication interface. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in combination with the embodiments below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In the current lithium battery production process, when preparing electrode sheets, a slot extrusion coater is generally used to coat the battery slurry; the uniformity of the coating area directly affects the performance of the lithium battery. In order to determine whether the coating area is uniform, it is necessary to measure the wet film on the electrode sheet after coating, and then enter the oven to measure the dry film after drying. The measurement process mainly measures the coating through X-rays and β-rays.

[0053] Since there is a long distance between the wet film measurement and the outlet of the extrusion coating, and the pole piece's belt speed is relatively fast, generally at 80m / min, there is a certain lag in the determination of the coating effect of the coating machine, which will lead to waste of coating when the spraying parameters are not good. Based on this, the present invention provides a battery pole piece manufacturing device, a battery pole piece production control system and a method, wherein a plurality of transducers are arranged at the die head of the coating die head, and these transducers can realize the real-time and accurate measurement of the fluid surface density and fluid flow rate of the battery pole piece, thereby greatly reducing the length of the uncontrollable area.

[0054] To facilitate understanding of this embodiment, a battery pole piece manufacturing device disclosed in an embodiment of the present invention is first described in detail. The battery pole piece manufacturing device includes a battery pole piece measuring device. The battery pole piece measuring manufacturing device is as follows: Figure 1 As shown, the battery pole piece measuring device is embedded at the outlet of the coating slit of the coating die head, and includes: a first transducer 10, a second transducer 20 and a third transducer 30;

[0055] The first transducer 10 is an ultrasonic element with transmitting and receiving functions. The first transducer 10 is vertically arranged on the upper side or the lower side of the coating slit. The first transducer 10 vertically transmits a first ultrasonic wave 10a to the coating slit, and determines the surface density of the fluid of the battery electrode in the coating slit according to the time difference of the received first ultrasonic wave 10a.

[0056] The second transducer 20 is an ultrasonic element with a transmitting function, and the third transducer 30 is an ultrasonic element with a receiving function; the second transducer 20 and the third transducer 30 are arranged on the same side of the coating slit, and after the second transducer 20 transmits the second ultrasonic wave 23 to the fluid of the battery electrode in the coating slit, the second ultrasonic wave 23 is reflected to the third transducer 30, and the flow rate of the fluid in the coating slit is determined according to the time difference of the received second ultrasonic wave 23.

[0057] Specifically, the first transducer 10, the second transducer 20 and the third transducer 30 can be compactly arranged at the coating slit outlet of the coating die head. Since the distance between the transducers is short, the above process can be quickly and accurately achieved in the process of measuring the fluid surface density and fluid flow rate of the battery pole piece. Since the traditional dry film thickness measurement and wet film thickness measurement methods need to waste a section of fluid coating in and out of the oven, this embodiment can perfectly solve the above problem and reduce the length of the uncontrollable area.

[0058] exist Figure 1 In the embodiment, the first transducer 10 is arranged upstream of the second transducer 20 and the third transducer 30. Figure 2 As shown in the structural diagram of another battery electrode manufacturing device, in one embodiment, the first transducer 10 is arranged downstream of the second transducer 20 and the third transducer 30. Although the transmission direction of the fluid is different, Figure 2 and Figure 1 The measurements of fluid surface density and fluid flow rate are consistent in the literature and will not be repeated here.

[0059] like Figure 3 As shown in the positional relationship diagram of a battery pole piece measuring device and a coating die head, in one embodiment, the battery pole piece measuring device is located at the protruding lip 3A of the coating die head and is located in the direction of fluid flow in the coating slit, as shown in FIG. Figure 3 As shown. The coating die head is provided with two coating slits, namely, the upper coating slit 3B and the lower coating slit 3C. The upper coating slit 3B is used to transmit the material in the upper feed port 3D, and the material is collected in the upper cavity 3E; the lower coating slit 3C is used to transmit the material in the lower feed port 3F, and the material is collected in the lower cavity 3G. The transmission amount of the material is adjusted by the adjustment mechanism 50d.

[0060] The specific location of the transducer is as follows: Figure 4 As shown in the enlarged view; the first transducer 10, the second transducer 20 and the third transducer 30 are embedded in the body of the coating die head, and the installation positions of the first transducer 10, the second transducer 20 and the third transducer 30 are flush with the wall of the coating slit. Figure 4 The first transducer 10, the second transducer 20 and the third transducer 30 are arranged in a side wall of the upper coating slit. The lower coating slit is also provided with three environmental devices, which will not be described in detail.

[0061] In one embodiment, the first transducer 10 uses the following formula when calculating the surface density of the fluid in the coating slit:

[0062] ;

[0063] in, is the surface density of the fluid; is the air density; is the propagation speed of the first ultrasonic wave in the air; is the propagation frequency of the first ultrasonic wave in the fluid; is the sound wave intensity attenuation rate after the first ultrasonic wave penetrates the fluid.

[0064] The transmission method can be used to perform ultrasonic testing on the surface density of the battery electrode surface. When the first ultrasonic wave penetrates the fluid medium, the intensity of the penetrated sound wave is attenuated compared to the incident sound wave. The attenuation ratio has a certain functional relationship with the surface density of the medium. In layman's terms, the surface density of the medium can be inferred from the attenuation of the intensity of the penetrating sound wave, thereby achieving quantitative analysis of the surface density of the electrode.

[0065] In one embodiment, the second transducer 20 and the third transducer 30 use the following formula in the process of calculating the flow rate of the fluid in the coating slit:

[0066]

[0067] in, ; ; ; d is the distance between the second transducer and the third transducer; h is the depth of the fluid; L is the propagation distance of the second ultrasonic wave from the second transducer to the third transducer; c is the propagation speed of the second ultrasonic wave in the fluid; v is the flow rate of the fluid; is the emission angle of the second ultrasonic wave.

[0068] The principle diagram of this formula is as follows Figure 5 As shown in the figure, let the speed of the second ultrasonic wave in the static fluid be c, and the flow velocity of the fluid be v. Let the distance between the second transducer and the third transducer be d, and the depth of the fluid be h. When transmitting downstream from p1 to p2, the propagation time t1 of the second ultrasonic wave is When the second ultrasonic wave is transmitted from p2 to p1 in the reverse flow, the propagation time t2 of the second ultrasonic wave is ; Generally, c>>v, assuming that the supersonic speed of the second ultrasonic wave in the stationary fluid is c, and the fluid flow speed is v, then the time difference is ,in .

[0069] In the above calibration process, c is an unknown quantity, and other parameters are known quantities, so the final sound velocity c of the second ultrasonic wave in the fluid is obtained. After c is calculated, it is substituted into , at this time, v in the formula is an unknown quantity, and the other parameters are all known quantities, thereby obtaining the propagation speed of the second ultrasonic wave in the fluid.

[0070] It can be seen from the battery pole piece manufacturing equipment in the above embodiment that the battery pole piece manufacturing equipment utilizes its built-in battery pole piece measuring equipment and sets multiple transducers at the die head of the coating die head. Through these transducers, the fluid surface density and fluid flow rate of the battery pole piece can be measured accurately in real time, thereby greatly reducing the length of the uncontrollable area.

[0071] The embodiment of the present invention provides a battery electrode production control system, such as Figure 6 As shown, the battery pole piece production control system includes: a coating die 50a, a substrate 50b, an oven 50c, an adjustment mechanism 50d and the battery pole piece manufacturing equipment mentioned in the above embodiment, and the battery pole piece manufacturing equipment includes a battery pole piece measuring device 50e; wherein the battery pole piece measuring device 50e is embedded at the outlet of the coating slit of the coating die 50a.

[0072] The substrate 50b is used to receive the fluid coating of the battery pole piece;

[0073] The oven 50c is disposed in the upstream conveying direction of the substrate 50b;

[0074] The coating die 50a is disposed in the downstream transmission direction of the substrate 50b;

[0075] The regulating mechanism 50d is disposed at the coating slit of the coating die 50a, and is used to control the coating rate of the fluid coating in the coating slit.

[0076] Since the battery pole piece measuring device 50e is compactly arranged at the coating slit outlet of the coating die head, the distance between the multiple transducers inside it is short, and the above process can be quickly and accurately achieved in the process of measuring the fluid surface density and fluid flow rate of the battery pole piece. Since the traditional dry film thickness measurement and wet film thickness measurement methods need to waste a section of fluid coating in and out of the oven, this embodiment can perfectly solve the above problem and achieve the reduction of the length of the uncontrollable area.

[0077] The structural schematic diagram of the coating die 50a is as follows Figure 7 As shown, the coating die includes an upper die 7A, a middle die and a lower die, a feed port is arranged at the upper die position, the upper die and other die heads form a coating lip 3A, which serves as the outlet of the coating slit, and an adjustment mechanism 50d is arranged in the upper die for adjusting the coating rate of the fluid coating flowing out from the upper layer feed port 3D.

[0078] In one embodiment, the coating die head is provided with a host computer interface 50f; the host computer interface 50f is respectively connected to the data output ends of the first transducer, the second transducer and the third transducer in the battery electrode measuring device 50e.

[0079] The host computer interface 50f is a preset interface of the coating die head, one end of which is connected to the transducer in the battery pole piece measuring device 50e; and the other end of the host computer interface 50f is finally connected to the host computer. The host computer interface 50f is used to upload the fluid flow rate and surface density parameters measured by the battery pole piece measuring device 50e to the host computer, and is used in the subsequent control process.

[0080] Specifically, in one embodiment, the battery pole piece production control system further includes: a host computer 50g;

[0081] The output end of the host computer 50g is connected to the control end of the substrate 50b; the input end of the host computer 50g is connected to the host computer interface 50f.

[0082] In layman's terms, the host computer interface 50f uploads the fluid flow rate and surface density parameters measured by the battery electrode measuring device 50e to the host computer 50g. The host computer 50g performs real-time analysis on the coating condition of the fluid coating based on the fluid flow rate and surface density parameters. When the coating effect does not meet the preset requirements, the host computer 50g generates relevant control instructions according to the coating effect, and sends the control instructions to the control end of the substrate 50b, thereby controlling the speed of the substrate 50b, and then adjusting the spraying process of the coating machine to meet the required coating effect, thereby realizing an automated control process.

[0083] It can be seen from the battery pole piece production control system in the above embodiment that the battery pole piece production control system is equipped with multiple transducers at the die head of the coating die head through the built-in battery pole piece manufacturing equipment. Through these transducers, the fluid surface density and fluid flow rate of the battery pole piece can be measured accurately in real time, thereby greatly reducing the length of the uncontrollable area, and realizing the automatic feedback control of the coating machine spraying process. Since the flow rate and surface density of the fluid can be measured, the mass flow rate of the fluid can also be measured. Combined with the fully automatic closed-loop control of the membrane head, the measurement and control of the membrane head and the membrane head body can be realized as a trinity, thereby greatly reducing or even eliminating the length of the uncontrollable area of ​​coating.

[0084] The embodiment of the present invention provides a battery pole piece production control method, which is applied to the battery pole piece production control system mentioned in the above embodiment; the method is as follows Figure 8 As shown, including:

[0085] Step S801, when a measurement instruction is detected, the speed parameter of the substrate in the battery pole piece production control system and the output parameter of the battery pole piece measuring device are obtained in real time;

[0086] Step S802, obtaining the fluid surface density and fluid flow rate of the battery electrode in the output parameters, and determining the control parameters of the regulating mechanism according to the fluid surface density and the fluid flow rate;

[0087] Step S803, controlling the coating rate of the fluid coating in the coating slit based on the control parameters.

[0088] Specifically, when the measurement instruction is detected, the speed parameter of the substrate in the battery pole piece production control system is first obtained as a reference value; at the same time, the output parameter of the battery pole piece measurement device is obtained as the data to be processed. Then the fluid surface density and fluid flow rate of the battery pole piece in the output parameters are obtained, and the coating condition of the fluid coating is analyzed in real time according to the fluid flow rate and surface density parameters. When the coating effect does not meet the preset requirements, relevant control instructions are generated according to the coating effect so that the substrate can reach the target speed. Specifically, the target speed of the substrate can be determined by the speed parameters of the current reference value, as well as the fluid surface density and fluid flow rate, and then the control instruction of the substrate is generated based on the target speed, and the control instruction is used to control the substrate to operate at the target speed to adjust the spraying process of the coating machine so that it meets the required coating effect, thereby realizing an automated control process.

[0089] It can be seen from the battery electrode production control method in the above embodiment that the battery electrode production control method can utilize the battery electrode measuring equipment it contains to set multiple transducers at the die head of the coating die during the process of controlling the battery electrode manufacturing equipment for production control. These transducers can be used to accurately measure the fluid surface density and fluid flow rate of the battery electrode in real time, thereby greatly reducing the length of the uncontrollable area and realizing automated feedback control of the coating process of the coating machine.

[0090] This embodiment also provides an electronic device. The structural diagram of the electronic device is as follows: Fig. 9 As shown, the device includes a processor 101 and a memory 102; wherein the memory 102 is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor to implement the steps of the above-mentioned battery electrode production control method.

[0091] Fig. 9 The electronic device shown further includes a bus 103 and a communication interface 104 , and the processor 101 , the communication interface 104 and the memory 102 are connected via the bus 103 .

[0092] The memory 102 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage. The bus 103 may be an ISA bus, a PCI bus, or an EISA bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 9Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0093] The communication interface 104 is used to connect to at least one user terminal and other network units through a network interface, and send the encapsulated IPv4 message or IPv4 message to the user terminal through the network interface.

[0094] The processor 101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 101. The above processor 101 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present disclosure can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present disclosure can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module may be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 102, and the processor 101 reads the information in the memory 102 and completes the steps of the method of the above embodiment in combination with its hardware.

[0095] An embodiment of the present invention further provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the ultrasonic data denoising method in the above embodiment are executed.

[0096] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0097] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0098] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0099] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that can be executed by a processor. Based on this understanding, the technical solution of the present invention can essentially or in other words, the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0100] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A battery pole piece manufacturing device, characterized in that: The battery pole piece manufacturing equipment comprises a battery pole piece measuring device, and the battery pole piece measuring device is embedded at the outlet of the coating slit of the coating die head; The battery pole piece measuring device comprises: a first transducer, a second transducer and a third transducer; Wherein, the first transducer is an ultrasonic element with transmitting and receiving functions, and the first transducer is vertically arranged on the upper side or the lower side of the coating slit, and the first transducer vertically transmits a first ultrasonic wave to the coating slit, and determines the surface density of the fluid of the battery electrode in the coating slit according to the time difference of the received first ultrasonic wave; The second transducer is an ultrasonic element with a transmitting function, and the third transducer is an ultrasonic element with a receiving function; the second transducer and the third transducer are arranged on the same side of the coating slit, and after the second transducer transmits a second ultrasonic wave to the fluid of the battery electrode in the coating slit, the second ultrasonic wave is reflected to the third transducer, and the flow rate of the fluid in the coating slit is determined according to the time difference of the received second ultrasonic wave; The first transducer uses the following formula to calculate the surface density of the fluid in the coating slit: ； in, is the surface density of the fluid; is the air density; is the propagation speed of the first ultrasonic wave in the air; is the propagation frequency of the first ultrasonic wave in the fluid; is the sound wave intensity attenuation rate after the first ultrasonic wave penetrates the fluid.

2. The battery pole piece manufacturing equipment according to claim 1, characterized in that: The battery pole piece measuring device is located at the protruding lip of the coating die head and in the direction of fluid flow in the coating slit; The first transducer, the second transducer and the third transducer are embedded in the body of the coating die head, and the installation positions of the first transducer, the second transducer and the third transducer are all flush with the wall surface of the coating slit.

3. The battery pole piece manufacturing equipment according to claim 1, characterized in that: The first transducer is disposed upstream of the second transducer and the third transducer.

4. The battery pole piece manufacturing equipment according to claim 1, characterized in that: The first transducer is disposed downstream of the second transducer and the third transducer.

5. The battery pole piece manufacturing equipment according to claim 1, characterized in that: In the process of calculating the flow velocity of the fluid in the coating slit, the second transducer and the third transducer use the following formula to calibrate the propagation velocity of the second ultrasonic wave in the fluid: ； in, ; ; ; d is the distance between the second transducer and the third transducer; h is the depth of the fluid; L is the propagation distance of the second ultrasonic wave between the second transducer and the third transducer; c is the propagation speed of the second ultrasonic wave in the fluid; v is the flow rate of the fluid; is the emission angle of the second ultrasonic wave.

6. A battery pole piece production control system, characterized in that: The system comprises: a coating die, a substrate, an adjustment mechanism, an oven, and a battery pole piece manufacturing device according to any one of claims 1 to 5; wherein the battery pole piece manufacturing device comprises a battery pole piece measuring device, and the battery pole piece measuring device is embedded at the outlet of the coating slit of the coating die; The substrate is used to receive the fluid coating of the battery pole piece; The oven is arranged in the upstream conveying direction of the substrate; The coating die head is arranged in the downstream transmission direction of the substrate; The regulating mechanism is arranged at the coating slit of the coating die head, and is used for controlling the coating rate of the fluid coating in the coating slit.

7. The battery pole piece production control system according to claim 6, characterized in that: The coating die head is provided with a host computer interface; the host computer interface is respectively connected to the data output ends of the first transducer, the second transducer and the third transducer in the battery electrode piece measuring device.

8. The battery pole piece production control system according to claim 7, characterized in that: The system also includes: a host computer; The output end of the host computer is connected to the control end of the regulating mechanism; The input end of the host computer is connected to the host computer interface.

9. A battery pole piece production control method, characterized in that: The method is applied to the battery pole piece production control system according to any one of claims 6 to 8 above; the method comprises: When a measurement instruction is detected, the output parameters of the battery electrode measuring device in the battery electrode production control system are obtained in real time; Acquiring the fluid surface density and fluid flow rate of the substrate in the output parameters, and determining the control parameters of the regulating mechanism according to the fluid surface density and the fluid flow rate; The coating rate of the fluid coating in the coating slit is controlled based on the control parameters.

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