Battery pole piece drying method and system based on variable frequency microwave

Abstract

The application belongs to the technical field of battery manufacturing, and discloses a battery pole piece drying method and system based on variable frequency microwave, which comprises the following steps: placing the battery pole piece to be dried in a pretreatment chamber and adjusting the initial temperature of the battery pole piece; using a variable frequency microwave generator to emit microwave signals of a first preset frequency range; during the drying process, spraying hot air of a second preset temperature range to the surface of the battery pole piece, the flow rate of the hot air being in a preset flow rate range, and monitoring the surface humidity of the battery pole piece in real time, and automatically adjusting the frequency of microwave radiation and the temperature of the air flow; after the drying is completed, transferring the battery pole piece to a cooling chamber, and using cooling air flow to rapidly reduce the temperature of the battery pole piece to room temperature. By using the embodiment of the application, the advantages of microwave technology can be fully utilized, the frequency and air flow temperature are dynamically adjusted, the drying process is monitored in real time, and the best drying effect of the battery pole piece under uniform and rapid conditions is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of drying, in particular to a battery pole piece drying method and system based on variable frequency microwave. BACKGROUND

[0002] With the rapid development of electric vehicles and energy storage technology, the requirements for battery performance are increasingly high. Battery pole pieces, as the core components of batteries, their drying process is crucial to the electrochemical performance and service life of the battery. In the drying process, the pole pieces need to remove the solvent in the coating material to ensure their high energy density and stability. However, traditional drying methods have many shortcomings, which restrict the efficiency and product quality of battery manufacturing.

[0003] Firstly, traditional drying methods mostly use hot air or infrared drying, which usually relies on convection and radiation heating. Due to the low efficiency of heat transfer, the drying time is long, and the non-uniformity of temperature easily leads to damage to the battery pole pieces, performance degradation, and even safety problems. In addition, it is difficult for traditional methods to monitor and adjust the temperature and humidity in real time during the drying process, resulting in unstable drying effect and affecting the overall performance of the battery. SUMMARY

[0004] The purpose of the present application is to provide a battery pole piece drying method and system based on variable frequency microwave to solve the shortcomings in the prior art, which can fully utilize the advantages of microwave technology, dynamically adjust the frequency and air temperature, monitor the drying process in real time, and ensure that the battery pole pieces reach the best drying effect under uniform and fast conditions.

[0005] One embodiment of the present application provides a battery pole piece drying method based on variable frequency microwave, the method comprising:

[0006] Placing the battery pole pieces to be dried in a pretreatment chamber and adjusting the initial temperature of the battery pole pieces;

[0007] Using a variable frequency microwave generator to emit microwave signals of a first preset frequency range, wherein the frequency of the microwave signals is modulated at a frequency of a second preset frequency range during the drying process;

[0008] During the drying process, hot air of a second preset temperature range is sprayed onto the surface of the battery pole pieces, the flow rate of the hot air is a preset flow rate range, and the surface humidity of the battery pole pieces is monitored in real time, and the frequency of microwave radiation and the temperature of the air flow are automatically adjusted;

[0009] After the drying is completed, the battery pole pieces are transferred to a cooling chamber, and a cooling air flow is used to rapidly reduce the temperature of the battery pole pieces to room temperature.

[0010] Optionally, the step of placing the battery pole piece to be dried in the pre-treatment chamber and adjusting the initial temperature of the battery pole piece comprises:

[0011] The battery pole piece to be dried is placed in layers in the pre-treatment chamber, and a multi-frequency temperature control technology is used to apply different temperatures to each layer to achieve a temperature gradient of the battery pole piece and promote uniform distribution of moisture and subsequent drying effect, wherein the first layer is 30°C, the second layer is 35°C, and the third layer is 40°C.

[0012] Optionally, the step of using a variable frequency microwave generator to emit a microwave signal in a first preset frequency range, wherein the frequency of the microwave signal is modulated at a frequency in a second preset frequency range during the drying process, comprises:

[0013] The variable frequency microwave generator is used to emit a microwave signal in a first preset frequency range of 300MHz to 3GHz, and the frequency of the microwave signal is modulated at a frequency in a second preset frequency range of 0.1Hz to 10Hz during the drying process, and a phase modulation technology is used to make the microwave act on the battery pole piece at different phases and frequencies in different time periods to form a complex drying field to achieve deep evaporation of the internal moisture of the battery pole piece.

[0014] Optionally, the step of spraying hot air in a second preset temperature range to the surface of the battery pole piece during the drying process, wherein the flow rate of the hot air is in a preset flow rate range, comprises:

[0015] During the drying process, hot air in a second preset temperature range of 40°C to 60°C is sprayed to the surface of the battery pole piece, and the preset flow rate range of the hot air is 1m / s to 5m / s, and the temperature and humidity of the surface of the battery pole piece are monitored in real time to ensure that the airflow forms a vortex on the surface of the battery pole piece to enhance the heat exchange efficiency.

[0016] Optionally, the step of transferring the battery pole piece to a cooling chamber after the drying is completed and rapidly reducing the temperature of the battery pole piece to room temperature by using a cooling airflow, comprises:

[0017] After the drying is completed, the battery pole piece is transferred to a cooling chamber, and a segmented cooling technology is used to rapidly reduce the surface temperature of the battery pole piece to 60°C by using a high-efficiency cooling airflow.

[0018] The surface temperature of the battery pole piece is gradually reduced to room temperature, wherein the temperature and flow rate of the cooling airflow are dynamically adjusted according to the real-time temperature change of the battery pole piece to prevent material deformation or performance degradation caused by sudden temperature drop.

[0019] Another embodiment of the present application provides a battery pole piece drying system based on variable frequency microwave, which comprises:

[0020] An adjusting module is configured to place the battery pole piece to be dried in a pretreatment chamber and adjust an initial temperature of the battery pole piece;

[0021] An emitting module is configured to emit a microwave signal of a first preset frequency range by using a variable frequency microwave generator, wherein the frequency of the microwave signal is modulated at a frequency of a second preset frequency range during the drying process;

[0022] A spraying module is configured to spray hot air of a second preset temperature range to the surface of the battery pole piece during the drying process, the flow rate of the hot air is in a preset flow rate range, and the surface humidity of the battery pole piece is monitored in real time, and the frequency of the microwave radiation and the temperature of the air flow are automatically adjusted;

[0023] A cooling module is configured to transfer the battery pole piece to a cooling chamber after the drying is completed, and rapidly reduce the temperature of the battery pole piece to room temperature by using a cooling air flow.

[0024] Another embodiment of the present application provides a storage medium, wherein a computer program is stored in the storage medium, and the computer program is configured to execute the method described in any one of the above embodiments when running.

[0025] Another embodiment of the present application provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to execute the method described in any one of the above embodiments.

[0026] Compared with the prior art, the battery pole piece drying method based on variable frequency microwave provided by the present application places the battery pole piece to be dried in a pretreatment chamber and adjusts an initial temperature of the battery pole piece, emits a microwave signal of a first preset frequency range by using a variable frequency microwave generator, wherein the frequency of the microwave signal is modulated at a frequency of a second preset frequency range during the drying process, sprays hot air of a second preset temperature range to the surface of the battery pole piece during the drying process, the flow rate of the hot air is in a preset flow rate range, and the surface humidity of the battery pole piece is monitored in real time, and the frequency of the microwave radiation and the temperature of the air flow are automatically adjusted, and the battery pole piece is transferred to a cooling chamber after the drying is completed, and the temperature of the battery pole piece is rapidly reduced to room temperature by using a cooling air flow, so that the superiority of the microwave technology can be fully utilized, the frequency and the air flow temperature are dynamically adjusted, the drying process is monitored in real time, and the battery pole piece can reach the best drying effect under the conditions of uniformity and rapidness. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A hardware structure block diagram of a computer terminal of the battery pole piece drying method based on variable frequency microwave provided by the embodiment of the present application is provided.

[0028] Figure 2A flowchart of a battery pole piece drying method based on variable frequency microwave provided by an embodiment of the present application is shown in the figure.

[0029] Figure 3 A structural diagram of a battery pole piece drying system based on variable frequency microwave provided by an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0030] The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be explained as a limitation of the present application.

[0031] The embodiment of the present application first provides a battery pole piece drying method based on variable frequency microwave, which can be applied to electronic devices, such as computer terminals, specifically, common computers, etc.

[0032] The following will be described in detail by taking a computer terminal as an example. Figure 1 A hardware structural diagram of a computer terminal of a battery pole piece drying method based on variable frequency microwave provided by an embodiment of the present application is shown in the figure. Figure 1 As shown in the figure, the computer device includes a processor, a memory and a network interface connected through a system bus, wherein the memory can include a non-volatile storage medium and an internal memory.

[0033] The non-volatile storage medium can store an operating system and a computer program. The computer program includes program instructions, which, when executed, can make the processor execute any kind of battery pole piece drying method based on variable frequency microwave.

[0034] The processor is used to provide computing and control capabilities to support the operation of the entire computer device.

[0035] The internal memory provides an environment for the running of the computer program in the non-volatile storage medium, which, when executed by the processor, can make the processor execute any kind of battery pole piece drying method based on variable frequency microwave.

[0036] The network interface is used for network communication, such as sending assigned tasks, etc. Those skilled in the art can understand that Figure 1 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or less components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0037] It should be appreciated that the processor can be a central processing unit (CPU), the processor can also be other general-purpose processors, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, etc. Among them, the general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0038] Referring to Figure 2 Embodiments of the present application provide a battery pole piece drying method based on variable frequency microwave, which can include the following steps:

[0039] S201, placing the battery pole piece to be dried in a pretreatment chamber, adjusting the initial temperature of the battery pole piece;

[0040] In this step, the process of placing the battery pole piece to be dried in the pretreatment chamber is crucial. By placing the battery pole piece in a specific temperature-controlled environment, the initial temperature can be effectively adjusted. At this time, the operator will select the appropriate pretreatment temperature according to the material properties and humidity of the battery pole piece. In this process, multi-point temperature control equipment is usually used to accurately control the temperature in the chamber to prepare for the subsequent drying process. Through temperature control technology, it can avoid uneven distribution of moisture in the battery pole piece before drying due to uneven environmental temperature, so as to ensure the efficiency and uniformity of the subsequent drying process.

[0041] The implementation of this step helps to create the best pretreatment conditions for the drying of the battery pole piece. By adjusting the initial temperature, the water in the battery pole piece can be effectively and uniformly distributed, thereby improving the efficiency and uniformity of the subsequent drying stage. If the temperature of the battery pole piece is not uniform before entering the drying link, it may lead to incomplete drying or local overheating, thereby affecting the overall performance and service life of the battery pole piece. Therefore, the initial temperature adjustment provided by the pretreatment chamber is not only an important prerequisite for achieving the drying effect, but also a basis for ensuring the quality of the final product.

[0042] Specifically, the battery pole piece to be dried can be placed in layers in the pretreatment chamber, and multi-band temperature control technology can be used to apply different temperatures to each layer to achieve a temperature gradient of the battery pole piece, promote uniform distribution of moisture and subsequent drying effect, wherein the first layer is 30°C, the second layer is 35°C, and the third layer is 40°C.

[0043] This step significantly improves the drying efficiency and uniformity of the battery electrode sheet by employing a layered temperature control technique, ensuring that each layer of the battery electrode sheet is dried efficiently within the appropriate temperature range. By setting different temperature layers, uniform distribution of moisture is promoted, which helps to reduce moisture migration and accumulation during the drying process, thereby reducing the risk of uneven drying quality of the battery electrode sheet. Without this critical initial adjustment step, the battery electrode sheet may experience significant temperature and humidity differences during the drying process, ultimately leading to a decrease in the quality of the finished product, affecting the overall performance and lifespan of the battery. Therefore, this step lays a solid foundation for the subsequent drying of the battery electrode sheet.

[0044] In implementing this step, the layered scheme of the battery electrode sheet must first be scientifically and reasonably designed. By placing the battery electrode sheet in layers in the pretreatment chamber, different temperatures can be set for different layers of the battery electrode sheet. During this process, multi-band temperature control technology is applied to ensure that the temperature of each layer is set reasonably and accurately. For example, the first layer is set to 30°C, the second layer to 35°C, and the third layer to 40°C. The benefit of such layered management is that the battery electrode sheet in the lower layer, which is closer to the bottom, may be less affected by temperature, while the gradually increasing temperature setting helps to quickly and uniformly increase its humidity and promote water evaporation.

[0045] In order to effectively monitor the temperature of each layer, it is crucial to properly layout the temperature sensors. Each layer can be equipped with corresponding temperature sensors, which are connected to the central control system to provide real-time feedback of temperature data for each layer. These sensors will help operators to promptly detect temperature changes, and if the temperature of a certain layer deviates, the system can immediately adjust the heating intensity of that layer to ensure that the drying process of the entire battery electrode sheet remains uniform.

[0046] In addition, the battery electrode sheet placed in layers also helps to create a convection effect in terms of air flow and heat exchange. The temperature difference between each layer will promote the circulation of air, thereby improving the efficiency of heat conduction and allowing moisture to be released more quickly from the inside of the battery electrode sheet. This temperature gradient not only speeds up the drying process, but also prevents damage to the material caused by overheating, further ensuring the overall performance of the battery electrode sheet.

[0047] S202, using a variable frequency microwave generator, emitting a microwave signal of a first preset frequency range, wherein the frequency of the microwave signal is modulated at a frequency of a second preset frequency range during the drying process;

[0048] In this step, the main function of the variable frequency microwave generator is to emit microwave signals in a specific frequency range, acting on the battery sheet to be dried in the form of a seed signal. The frequency of these microwave signals is set in the range of 300MHz to 3GHz, covering a variety of frequencies suitable for deep water evaporation. This design takes into account the characteristics and moisture content of the battery sheet material, and through microwave excitation of internal water molecules, it rapidly vibrates to increase the evaporation rate of water. In actual operation, the microwave generator can adjust the drying effect in real time by modulating the frequency, so that the microwave radiation can adapt to the changes in the moisture content of the battery sheet, ensuring the flexibility and effectiveness of the drying process.

[0049] By emitting microwave signals with a frequency range of 300MHz to 3GHz and modulating during the drying process, the evaporation efficiency of water in the battery sheet can be significantly improved, ensuring the uniformity and depth of the drying process. This frequency modulation helps generate different electromagnetic fields, forming a complex drying field inside the battery sheet to effectively penetrate and excite internal water molecules. This method has significant advantages over traditional drying methods, reducing drying time and preventing quality problems caused by uneven moisture, thereby improving the production efficiency and product quality of the battery sheet, ultimately laying the foundation for improving battery performance.

[0050] Specifically, a variable frequency microwave generator can be used to emit microwave signals with a first preset frequency range of 300MHz to 3GHz. The frequency of the microwave signal is modulated at a second preset frequency range of 0.1Hz to 10Hz during the drying process, and combined with phase modulation technology, the microwave acts on the battery sheet at different phases and frequencies in different time periods, forming a complex drying field to achieve deep evaporation of internal water in the battery sheet.

[0051] The implementation of this step not only ensures effective deep water evaporation of the battery sheet, but also greatly improves drying efficiency and uniformity. By modulating the frequency and phase of the variable frequency microwave generator during the drying process, it can be targeted to each part of the battery sheet, effectively reducing the problem of heat accumulation and excessive water during the drying process. This advanced drying method can significantly shorten the drying time compared to traditional techniques, improve product quality, and ultimately help improve the overall performance and market competitiveness of the battery.

[0052] In the implementation of this step, first of all, it is necessary to emit microwave signals with a frequency range of 300MHz to 3GHz through a variable frequency microwave generator. This process involves connecting the transmitting device with the control system, ensuring that the frequency and power of the transmission can be accurately adjusted. The variable frequency microwave generator has high flexibility, which can adjust the frequency of the transmission in real time, ensuring that the signal remains within the specified frequency range during the drying process. The core of this process is to emit microwave signals of different frequencies according to the moisture content of the battery pole piece, so as to effectively evaporate water at different levels.

[0053] Next, the modulation of the microwave signal will use a second preset frequency range of 0.1Hz to 10Hz. By periodically adjusting the frequency, the water molecules inside the battery pole piece can obtain different energy at different time frequencies, which can further accelerate the evaporation of water. During this process, the operator needs to monitor the output state of the microwave generator to ensure that the switching of each frequency has good real-time performance and stability. Combined with phase modulation technology, the device will control the phase of the microwave signal to form an alternating drying field, thereby improving the penetration and evaporation of water inside the battery pole piece.

[0054] Finally, the microwave signal realizes the evaporation of deep water by applying different phases and frequencies to the battery pole piece. In this step, the different phases and frequencies of the microwave signal form a complex drying field, ensuring that water can be fully released at various levels, thereby avoiding the uneven drying problem existing in traditional drying methods. The operator can further adjust the microwave signal parameters by monitoring the temperature and humidity data of the battery pole piece in real time to ensure the efficiency and uniformity of the drying process.

[0055] S203, during the drying process, hot air with a second preset temperature range is sprayed onto the surface of the battery pole piece, the flow rate of the hot air is within a preset flow rate range, and the surface humidity of the battery pole piece is monitored in real time, and the frequency of microwave radiation and the temperature of the air flow are automatically adjusted;

[0056] During the drying process, by spraying hot air with a second preset temperature range onto the surface of the battery pole piece, the operator can effectively increase the surface temperature of the battery pole piece, thereby promoting the evaporation of water. The flow rate of the hot air needs to be maintained within the preset flow rate range to ensure that the air flow can uniformly cover the surface of the battery pole piece, avoiding the occurrence of local overheating or overcooling. At the same time, real-time monitoring of the surface humidity of the battery pole piece is the key to ensuring the drying effect. Through the humidity sensor, the humidity data of the surface of the battery pole piece can be continuously obtained, and then the frequency of microwave radiation and the temperature of the air flow are automatically adjusted. Such a feedback mechanism enables the microwave drying process to adapt to the dynamically changing drying environment, thereby improving the drying efficiency and uniformity.

[0057] The implementation of this step can effectively improve the efficiency and quality of the drying process. By spraying hot air, the evaporation of water on the surface of the battery plate can be accelerated, and the retention of water in the interior of the plate can be prevented. By monitoring the humidity in real time and automatically adjusting the frequency of microwave radiation and the temperature of the air flow, it can be ensured that the battery plate is always in the most suitable drying state throughout the drying process. This dynamic adjustment mechanism makes the entire drying process more intelligent, not only improving the drying efficiency, but also significantly reducing the performance degradation of the battery caused by uneven drying, ultimately laying a good foundation for the efficient operation of the battery.

[0058] In actual operation, first, a nozzle system is set up in the drying equipment, which can be evenly distributed on the surface of the battery plate to ensure that hot air can cover the entire plate. According to the actual temperature and humidity of the battery plate, the operator can set the temperature of the hot air between 40°C and 60°C, and the flow rate between 1m / s and 5m / s. A high-efficiency fan system is used to spray hot air in real time, while the angle and air volume of the nozzles are set to ensure that the airflow forms a vortex on the surface of the battery plate, improving heat exchange efficiency.

[0059] Second, cooperate with the humidity sensor to continuously monitor the humidity change on the surface of the battery plate. Through the feedback information of the sensor, the control system will adjust the working state of the two in real time. If the humidity is higher than the preset value, the system will automatically increase the frequency of microwave radiation and adjust the air temperature to promote the rapid evaporation of water; on the contrary, if the humidity is low, the system will reduce the microwave radiation intensity and air temperature to avoid damage to the battery plate.

[0060] Finally, the entire system also needs to be equipped with a data analysis module that can record the humidity and temperature data during each drying process. This not only can be used for subsequent optimization and adjustment of the drying process, but also can provide data support for battery production, helping production personnel to recognize the differences in different batches of battery plates during the drying process, so as to make targeted improvements to achieve better drying effect.

[0061] Specifically, during the drying process, hot air of a second preset temperature range is sprayed onto the surface of the battery plate, and the flow rate of the hot air is within a preset flow rate range. During the drying process, hot air with a second preset temperature range of 40°C to 60°C can be sprayed onto the surface of the battery plate, and the preset flow rate range of the hot air is 1m / s to 5m / s. The temperature and humidity on the surface of the battery plate are monitored in real time to ensure that the airflow forms a vortex on the surface of the battery plate, enhancing heat exchange efficiency.

[0062] During the drying process, the surface temperature of the battery electrode sheet can be effectively increased by spraying hot air, promoting the rapid evaporation of moisture. The temperature of the hot air is set between 40°C and 60°C, which is a moderate temperature range that can effectively support the evaporation of moisture without causing thermal damage to the battery electrode sheet. In addition, the flow rate of the hot air is required to be between 1m / s and 5m / s, which can ensure that the airflow fully covers the surface of the battery electrode sheet, improving the drying efficiency. By monitoring the surface temperature and humidity in real time, the system can automatically adjust under varying drying conditions, ensuring the continuity and consistency of the drying process.

[0063] The implementation of this step significantly improves the drying efficiency and product quality of the battery electrode sheet. Through appropriate hot air spraying, not only can the evaporation of moisture be accelerated, but also the material temperature can be adjusted to avoid material deformation or performance degradation caused by high temperature. In addition, the combination of real-time monitoring and automatic adjustment mechanism ensures the intelligentization of the entire drying process, helps to reduce human operation errors, and improves the reliability and consistency of production.

[0064] In the specific implementation of this step, first, install a uniformly distributed nozzle system in the drying equipment to ensure that hot air can be sprayed from different angles and directions onto the battery electrode sheet. The operator can set the temperature range of the hot air to be between 40°C and 60°C, and the flow rate to be between 1m / s and 5m / s based on the feedback of the equipment. High-efficiency fans should be selected and reasonable nozzle angles should be set to ensure that the airflow can uniformly cover the surface of the battery electrode sheet and form a vortex on the surface, improving the heat exchange efficiency.

[0065] Secondly, the installation of humidity detectors is crucial. The detector should monitor the humidity changes on the surface of the battery electrode sheet. While spraying hot air, the system receives humidity data in real time, and once it detects that the humidity is too high, it will automatically adjust the flow rate and temperature of the sprayed hot air, or adjust the microwave radiation frequency of the equipment accordingly, to ensure that the moisture can be quickly evaporated.

[0066] Finally, in order to further improve the drying effect, an advanced control system can combine machine learning algorithms to analyze historical drying process data and dynamically optimize the spraying parameters and microwave radiation settings. This system can predict the changes in drying effect under different conditions, thus providing a more intelligent management solution for production, ultimately ensuring the drying quality and consistency of the battery electrode sheet.

[0067] S204, after the drying is completed, the battery electrode sheet is transferred to the cooling chamber, and the temperature of the battery electrode sheet is rapidly reduced to room temperature by using cooling airflow.

[0068] After the drying process is completed, the battery pole piece is transferred to a cooling chamber, and a cooling gas stream is used to rapidly reduce the temperature of the battery pole piece to room temperature. This step is to ensure that the battery pole piece can smoothly transition to the subsequent processing link after drying. During the cooling process, the battery pole piece is cooled by uniform cooling gas stream, which can effectively reduce the thermal stress caused by large temperature difference, thereby avoiding material deformation and performance degradation. In addition, rapid cooling can also reduce the re-adsorption of moisture to some extent, ensuring the quality and stability of the battery pole piece.

[0069] The implementation of this step is crucial to ensure the structural stability and performance of the battery pole piece. After high-temperature drying, the surface temperature of the battery pole piece may be significantly higher than the ambient temperature. If it is quickly transferred to a cooling chamber and cooled by a cooling gas stream, material fatigue can be effectively reduced, and deformation and performance degradation caused by sudden temperature drop can be avoided. This temperature control design not only helps to maintain the original physical and chemical properties of the battery pole piece, but also improves the smoothness of subsequent processing, ultimately protecting the overall performance of the battery.

[0070] Specifically, after the drying process is completed, the battery pole piece can be transferred to a cooling chamber, and a segmented cooling technique can be used to rapidly reduce the surface temperature of the battery pole piece to 60°C using a high-efficiency cooling gas stream.

[0071] This step is used to rapidly reduce the temperature of the battery pole piece to 60°C after high-temperature drying, preventing damage to the pole piece caused by sudden temperature drop. By introducing a cooling gas stream, the uniformity and effectiveness of the cooling process can be ensured, thereby avoiding material stress concentration and deformation caused by local temperature drop. At the same time, this process lays the foundation for the subsequent gradual cooling process, ensuring the stability of the battery pole piece during subsequent processing. By rapidly reducing the temperature of the battery pole piece to 60°C, material fatigue and deformation caused by temperature difference can be effectively reduced. Rapid cooling not only protects the microstructure of the material, but also provides a good starting point for the subsequent cooling program, ensuring the continuity and reliability of the battery pole piece on the entire production line, ultimately improving the overall quality and market competitiveness of the product.

[0072] After the drying process is completed, the treated battery pole piece needs to be carefully transferred to the pre-set cooling chamber. The design of the cooling chamber should ensure good air flow channel and effective temperature management to quickly and uniformly cool the battery pole piece. The cooling chamber should be equipped with high-efficiency cooling fans and temperature control devices to ensure uniform distribution of cooling gas stream on the surface of the battery pole piece. For example, the cooling chamber can use a local air flow adjustment system to adjust the angle and speed of the fan to ensure that the air flow can cover every corner of the battery pole piece.

[0073] Secondly, the temperature of the cooling air flow should be lower than the current temperature of the battery tab surface, and it is recommended to set it to a low temperature close to the ambient temperature, such as around 20°C. By spraying the cooling air flow at a moderate speed to the surface of the battery tab, the heat on its surface can be quickly taken away, reducing its temperature to 60°C. The air speed of the fan can be adjusted to be between 2m / s and 3m / s to ensure that the intensity of the cooling air flow can effectively dissipate heat, while not causing physical damage to the battery tab.

[0074] Finally, the surface temperature of the battery tab is detected in real time using temperature sensors, and once the temperature drops to 60°C, the system will send a signal indicating that it can enter the next cooling program. During this process, the greenhouse regulation system of the cooling chamber will continuously maintain a certain temperature and humidity environment to ensure that the battery tab will not be excessively dried and cause instability of the material performance while cooling.

[0075] Gradually reduce the surface temperature of the battery tab to room temperature, wherein the temperature and flow rate of the cooling air flow are dynamically adjusted according to the real-time temperature changes of the battery tab to prevent material deformation or performance degradation caused by sudden temperature drop.

[0076] The step of gradually reducing the surface temperature of the battery tab to room temperature is to ensure that the battery tab can smoothly transition to room temperature during the cooling process, avoiding thermal stress and material damage caused by sudden low temperature impact. By dynamically adjusting the temperature and flow rate of the cooling air flow, the cooling speed can be finely controlled according to the real-time temperature changes of the battery tab, keeping the material uniform throughout the cooling process. The implementation of this step helps to achieve uniform temperature reduction of the battery tab, ensuring the stability and consistency of the material, reducing the risk of deformation or performance degradation caused by temperature unevenness. By precisely controlling the cooling process, the microstructure of the battery tab is not damaged, providing optimal conditions for subsequent processing and use, greatly enhancing the performance and life of the battery.

[0077] After the temperature of the battery tab is reduced to 60°C, the system will start the gradual cooling program. At this time, the flow rate and temperature of the cooling air flow need to be further dynamically adjusted to ensure that the cooling process of the battery tab can proceed smoothly, avoiding thermal stress concentration caused by large temperature difference. Generally, the flow rate of the cooling air flow can be gradually reduced to 1m / s to 2m / s, and the temperature of the air flow can be adjusted to 18°C to 20°C. This can ensure that the surface temperature of the battery tab gradually approaches room temperature, forming a gentle cooling process.

[0078] To achieve this dynamic adjustment, the control system should be equipped with high-precision temperature sensors to monitor the surface temperature of the battery pole piece in real time. When the temperature is detected to gradually decrease to 55°C, the system will automatically adjust the flow rate and temperature of the cooling air flow to prevent rapid cooling and ensure uniform temperature drop in each area. For example, if the temperature of a certain part drops too fast, the system will increase the temperature of the air flow in that part while reducing the flow rate to ensure the balance of the cooling process.

[0079] In addition, data recording and analysis during the cooling process are also important. The system can record data based on the temperature change of each cooling process to analyze which parameter settings are most effective and optimize subsequent cooling processes. For example, the device can record the temperature changes of different levels of battery pole pieces during the cooling process to room temperature, adjust the cooling method accordingly, and form an optimal cooling solution. This feedback mechanism not only improves cooling efficiency but also ensures the consistency and high quality of the battery pole pieces throughout the entire processing process.

[0080] Overall, through reasonable segmented cooling technology and intelligent dynamic adjustment mechanism, the surface temperature of the battery pole piece can be effectively reduced to room temperature, ultimately protecting the material performance while improving the production efficiency and quality of the entire battery.

[0081] It can be seen that the battery pole piece to be dried is placed in the pretreatment chamber, and the initial temperature of the battery pole piece is adjusted; a variable frequency microwave generator is used to emit microwave signals of a first preset frequency range, wherein the frequency of the microwave signals is modulated at a frequency of a second preset frequency range during the drying process; during the drying process, hot air of a second preset temperature range is sprayed onto the surface of the battery pole piece, the flow rate of the hot air is a preset flow rate range, and the surface humidity of the battery pole piece is monitored in real time to automatically adjust the frequency of microwave radiation and the temperature of the air flow; after the drying is completed, the battery pole piece is transferred to the cooling chamber, and the temperature of the battery pole piece is rapidly reduced to room temperature by using cooling air flow, so that the advantages of microwave technology can be fully utilized, the frequency and air flow temperature are dynamically adjusted, the drying process is monitored in real time, and the battery pole piece can achieve the best drying effect under uniform and rapid conditions.

[0082] Another embodiment of the present application provides a variable frequency microwave-based battery pole piece drying system, as shown in Figure 3 , the system can include:

[0083] The adjusting module 301 is used to place the battery pole piece to be dried in the pretreatment chamber and adjust the initial temperature of the battery pole piece.

[0084] The emitting module 302 is used to emit microwave signals of a first preset frequency range by using a variable frequency microwave generator, wherein the frequency of the microwave signals is modulated at a frequency of a second preset frequency range during the drying process.

[0085] a spraying module 303, configured to spray hot air at a second preset temperature range to surfaces of the battery pole pieces during the drying process, the hot air having a flow rate in a preset flow rate range, and to monitor surface humidity of the battery pole pieces in real time, and to automatically adjust the frequency of the microwave radiation and the temperature of the air flow;

[0086] a cooling module 304, configured to transfer the battery pole pieces to a cooling chamber after the drying is completed, and to rapidly reduce the temperature of the battery pole pieces to room temperature by using a cooling air flow.

[0087] It can be seen that the battery pole pieces to be dried are placed in the pretreatment chamber, and the initial temperature of the battery pole pieces is adjusted; a variable-frequency microwave generator is used to emit microwave signals at a first preset frequency range, wherein the frequency of the microwave signals is modulated at a frequency in a second preset frequency range during the drying process; hot air at a second preset temperature range is sprayed to surfaces of the battery pole pieces during the drying process, the hot air having a flow rate in a preset flow rate range, and the surface humidity of the battery pole pieces is monitored in real time, and the frequency of the microwave radiation and the temperature of the air flow are automatically adjusted; after the drying is completed, the battery pole pieces are transferred to a cooling chamber, and the temperature of the battery pole pieces is rapidly reduced to room temperature by using a cooling air flow, so that the advantages of the microwave technology can be fully utilized, the frequency and the air flow temperature are dynamically adjusted, the drying process is monitored in real time, and the battery pole pieces can reach the best drying effect under uniform and rapid conditions.

[0088] The embodiment of the present application also provides a storage medium, wherein the storage medium stores a computer program, and the computer program is set to execute the steps in any of the method embodiments.

[0089] Specifically, in the embodiment, the storage medium can be set to store a computer program for executing the following steps:

[0090] S201, placing battery pole pieces to be dried in a pretreatment chamber, and adjusting the initial temperature of the battery pole pieces;

[0091] S202, using a variable-frequency microwave generator to emit microwave signals at a first preset frequency range, wherein the frequency of the microwave signals is modulated at a frequency in a second preset frequency range during the drying process;

[0092] S203, spraying hot air at a second preset temperature range to surfaces of the battery pole pieces during the drying process, the hot air having a flow rate in a preset flow rate range, and monitoring surface humidity of the battery pole pieces in real time, and automatically adjusting the frequency of the microwave radiation and the temperature of the air flow;

[0093] S204, transferring the battery pole pieces to a cooling chamber after the drying is completed, and rapidly reducing the temperature of the battery pole pieces to room temperature by using a cooling air flow.

[0094] It can be seen that the battery pole piece to be dried is placed in a pretreatment chamber, the initial temperature of the battery pole piece is adjusted, a variable-frequency microwave generator is used to emit a microwave signal of a first preset frequency range, the frequency of the microwave signal is modulated at a frequency of a second preset frequency range during the drying process, hot air of a second preset temperature range is sprayed to the surface of the battery pole piece during the drying process, the flow rate of the hot air is in a preset flow rate range, the surface humidity of the battery pole piece is monitored in real time, and the frequency of microwave radiation and the temperature of the air flow are automatically adjusted, after the drying is completed, the battery pole piece is transferred to a cooling chamber, and a cooling air flow is used to rapidly reduce the temperature of the battery pole piece to room temperature, so that the advantages of microwave technology can be fully utilized, the frequency and the air flow temperature are dynamically adjusted, the drying process is monitored in real time, and the battery pole piece can reach the best drying effect under uniform and rapid conditions.

[0095] The embodiment of the present application also provides an electronic device, including a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any of the above method embodiments.

[0096] Specifically, the above electronic device can further include a transmission device and an input / output device, wherein the transmission device is connected with the processor, and the input / output device is connected with the processor.

[0097] Specifically, in the embodiment, the processor can be configured to execute the following steps through the computer program:

[0098] S201, placing the battery pole piece to be dried in a pretreatment chamber, and adjusting the initial temperature of the battery pole piece;

[0099] S202, using a variable-frequency microwave generator to emit a microwave signal of a first preset frequency range, wherein the frequency of the microwave signal is modulated at a frequency of a second preset frequency range during the drying process;

[0100] S203, during the drying process, spraying hot air of a second preset temperature range to the surface of the battery pole piece, the flow rate of the hot air being in a preset flow rate range, and monitoring the surface humidity of the battery pole piece in real time, and automatically adjusting the frequency of microwave radiation and the temperature of the air flow;

[0101] S204, after the drying is completed, transferring the battery pole piece to a cooling chamber, and using a cooling air flow to rapidly reduce the temperature of the battery pole piece to room temperature.

[0102] It can be seen that the battery pole piece to be dried is placed in the pretreatment chamber, the initial temperature of the battery pole piece is adjusted, a variable frequency microwave generator is used to emit a microwave signal of a first preset frequency range, the frequency of the microwave signal is modulated at a frequency of a second preset frequency range during the drying process, hot air of a second preset temperature range is sprayed to the surface of the battery pole piece during the drying process, the flow rate of the hot air is a preset flow rate range, the surface humidity of the battery pole piece is monitored in real time, the frequency of the microwave radiation and the temperature of the air flow are automatically adjusted, after the drying is completed, the battery pole piece is transferred to the cooling chamber, and the temperature of the battery pole piece is rapidly reduced to room temperature by using a cooling air flow, so that the advantages of the microwave technology can be fully utilized, the frequency and the air flow temperature are dynamically adjusted, the drying process is monitored in real time, and the battery pole piece can reach the best drying effect under the conditions of uniformity and rapidness.

[0103] The above describes the structure, features and effects of the present application in detail according to the embodiments shown in the drawings, and the above description is only the preferred embodiments of the present application, but the present application is not limited to the embodiments shown in the drawings, any change or modification made according to the concept of the present application, or equivalent embodiments with equivalent changes, as long as they are within the scope of the present application, should be within the protection scope of the present application.

Claims

1. A variable frequency microwave based method of drying battery electrode sheet, characterized by, The method comprises: Placing the battery pole piece to be dried in the pretreatment chamber, adjusting the initial temperature of the battery pole piece, comprising: placing the battery pole piece to be dried in layers in the pretreatment chamber, using multi-band temperature control technology to apply different temperatures to each layer to achieve a temperature gradient of the battery pole piece, promoting uniform distribution of moisture and subsequent drying effect, wherein the first layer is 30°C, the second layer is 35°C, and the third layer is 40°C; Using a variable frequency microwave generator to emit a microwave signal in a first preset frequency range, wherein the frequency of the microwave signal is modulated at a frequency in a second preset frequency range during the drying process, comprising: using a variable frequency microwave generator to emit a microwave signal in a first preset frequency range of 300MHz to 3GHz, and the frequency of the microwave signal is modulated at a frequency in a second preset frequency range of 0.1Hz to 10Hz during the drying process, and combined with phase modulation technology, the microwave acts on the battery pole piece at different phases and frequencies in different time periods to form a complex drying field to realize deep evaporation of the internal moisture of the battery pole piece; During the drying process, hot air in a second preset temperature range is sprayed onto the surface of the battery pole piece, the flow rate of the hot air is in a preset flow rate range, and the surface humidity of the battery pole piece is monitored in real time to automatically adjust the frequency of microwave radiation and the temperature of the air flow; wherein during the drying process, hot air in a second preset temperature range of 40°C to 60°C is sprayed onto the surface of the battery pole piece, the preset flow rate range of the hot air is 1m / s to 5m / s, and the temperature and humidity of the surface of the battery pole piece are monitored in real time to ensure that the air flow forms a vortex on the surface of the battery pole piece, enhancing the heat exchange efficiency; After the drying is completed, the battery pole piece is transferred to a cooling chamber, and a cooling air flow is used to rapidly reduce the temperature of the battery pole piece to room temperature.

2. The method of claim 1, wherein, After the drying is completed, the battery pole piece is transferred to a cooling chamber, and a cooling air flow is used to rapidly reduce the temperature of the battery pole piece to room temperature. After the drying is completed, the battery pole piece is transferred to a cooling chamber, and a cooling air flow is used to rapidly reduce the temperature of the battery pole piece to room temperature. The system comprises:

3. A variable frequency microwave based battery electrode sheet drying system, characterized in that, An adjusting module for placing the battery pole piece to be dried in the pretreatment chamber, adjusting the initial temperature of the battery pole piece, comprising: placing the battery pole piece to be dried in layers in the pretreatment chamber, using multi-band temperature control technology to apply different temperatures to each layer to achieve a temperature gradient of the battery pole piece, promoting uniform distribution of moisture and subsequent drying effect, wherein the first layer is 30°C, the second layer is 35°C, and the third layer is 40°C; ​ The emission module is used for emitting microwave signals in a first preset frequency range by using a variable frequency microwave generator, wherein the frequency of the microwave signals is modulated by a frequency in a second preset frequency range during the drying process, and the emission module comprises: a variable frequency microwave generator for emitting microwave signals in a first preset frequency range of 300MHz to 3GHz, and the frequency of the microwave signals is modulated by a frequency in a second preset frequency range of 0.1Hz to 10Hz during the drying process, and the phase modulation technology is combined to make the microwave act on the battery pole piece at different phases and frequencies in different time periods, so as to form a complex drying field to realize deep evaporation of the internal moisture of the battery pole piece. The spraying module is used for spraying hot air in a second preset temperature range to the surface of the battery pole piece during the drying process, the flow rate of the hot air is in a preset flow rate range, and the surface humidity of the battery pole piece is monitored in real time to automatically adjust the frequency of the microwave radiation and the temperature of the air flow; wherein the hot air in a second preset temperature range of 40°C to 60°C is sprayed to the surface of the battery pole piece during the drying process, the preset flow rate range of the hot air is 1m / s to 5m / s, and the temperature and humidity of the surface of the battery pole piece are monitored in real time to ensure that the air flow forms a vortex on the surface of the battery pole piece to enhance the heat exchange efficiency. The cooling module is used for transferring the battery pole piece to a cooling chamber after the drying is completed, and rapidly reducing the temperature of the battery pole piece to room temperature by using a cooling air flow.

4. A storage medium, characterized by The storage medium stores a computer program, and the computer program is configured to execute the method in any one of claims 1-2 when running.

5. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to execute the method in any one of claims 1-2 by running the computer program.

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