An electrode plate drying device and a drying method

Abstract

The application provides a kind of pole piece drying device, including light source module, transmission mechanism, exhaust mechanism and controller;Light source module can generate and output exit light beam, for drying to be dried pole piece;Transmission mechanism can drive to be dried pole piece movement and enter the coverage area of exit light beam;Controller can control the output power of light source module, so that in the drying process of to be dried pole piece, the energy density of exit light beam received by to be dried pole piece changes with drying time length;With the increase of drying time length, the energy density of exit light beam received by to be dried pole piece gradually becomes smaller;Exhaust mechanism is used to exhaust steam in the drying process of to be dried pole piece.The pole piece drying device of the application not only can improve the drying efficiency of to be dried pole piece, but also can improve the mechanical and electrochemical performance of pole piece, in addition, the pole piece drying device of the application can save energy and reduce cost, small space occupation, conducive to the miniaturization of device volume.

Description

Technical Field

[0001] This application relates to the field of lithium battery manufacturing technology, and in particular to an electrode drying apparatus and drying method. Background Technology

[0002] The manufacturing process of motor electrode sheets includes mixing, coating, drying, calendering, post-drying, and battery assembly steps. In existing technologies, hot air drying, infrared drying, or microwave drying are commonly used to dry the coated electrode sheets.

[0003] However, in the prior art, in order to simplify the cost of the drying device, a light source with a fixed output power is usually used to irradiate and dry the coated electrode. This drying method has low drying efficiency and is prone to damaging the internal structure of the electrode.

[0004] Therefore, there is an urgent need for an improved electrode drying device to solve the problems of low electrode drying efficiency and easy impact on electrode quality. Summary of the Invention

[0005] This application provides an electrode drying apparatus and a drying method, which can not only improve the drying efficiency of the electrode to be dried, but also improve the mechanical and electrochemical properties of the electrode. In addition, the electrode drying apparatus of this application can save energy and reduce costs, occupy little space, and is conducive to the miniaturization of the device.

[0006] On the one hand, this application provides an electrode drying device, including a light source module, a transmission mechanism, a dehumidification mechanism, and a controller;

[0007] The light source module can generate and output an outgoing light beam for drying the electrode sheet to be dried.

[0008] The transmission mechanism can drive the electrode to be dried to move and enter the coverage area of ​​the emitted light beam;

[0009] The controller can control the output power of the light source module so that during the drying process of the electrode to be dried, the energy density of the emitted light beam received by the electrode to be dried changes with the drying time; as the drying time increases, the energy density of the emitted light beam received by the electrode to be dried gradually decreases.

[0010] The dehumidification mechanism is used to remove steam generated during the drying process of the electrode sheet to be dried.

[0011] Furthermore, the light source module includes multiple first light source modules, which are arranged sequentially along the transmission direction of the electrode to be dried;

[0012] The controller can control the output power of each of the plurality of first light source modules respectively, so that the energy density of the emitted light beams output by the plurality of first light source modules gradually decreases along the transmission direction.

[0013] Furthermore, the light source module includes at least one second light source module;

[0014] The controller can adjust the output power of the second light source module so that, during the drying process of the electrode to be dried, the energy density of the emitted light beam output by the second light source module gradually decreases as the drying time increases.

[0015] Furthermore, the electrode drying device also includes a light-diffusing component, which is disposed on the output light path of the light source module;

[0016] The beam homogenizing component is used to receive the emitted beam, homogenize the emitted beam, and project the homogenized emitted beam onto the coverage area.

[0017] Furthermore, the electrode drying device also includes a dehumidification mechanism, which is used to at least partially discharge the solvent inside the electrode to be dried before the electrode to be dried enters the covered area.

[0018] Furthermore, the dehumidification mechanism includes a rolling assembly that can roll on the electrode to be dried to at least partially expel the solvent from the electrode.

[0019] Furthermore, the dehumidification mechanism includes an air knife assembly with its air outlet facing the covered area, and the air knife assembly is used to at least partially blow out the solvent inside the electrode to be dried.

[0020] Furthermore, at least a portion of the emitted light beam from the light source module is in a preset wavelength band, and the emitted light beam in the preset wavelength band can penetrate the electrode to be dried.

[0021] Furthermore, the preset wavelength range is 200nm-5000mm.

[0022] Furthermore, the electrode drying device also includes a first temperature and humidity detection component and a visualization component, the first temperature and humidity detection component and the visualization component being electrically connected;

[0023] The first temperature and humidity detection component is used to detect the drying temperature and / or humidity of multiple areas of the electrode to be dried, and transmit the data to the visualization component for display.

[0024] Furthermore, the first temperature and humidity detection component is electrically connected to the controller;

[0025] Based on the current drying temperature and / or humidity of multiple regions of the electrode to be dried, and the target drying conditions, the controller can adjust the output power of the light source module until the current drying temperature and / or humidity of the electrode to be dried meets the target drying conditions.

[0026] Furthermore, the electrode drying device also includes a second temperature and humidity detection component, which is electrically connected to the controller;

[0027] The second temperature and humidity detection component is used to detect the air temperature and / or humidity in the electrode drying space and transmit the data to the controller;

[0028] Based on the air temperature and / or humidity of the electrode drying space, and the target temperature and humidity, the controller can adjust the airflow regulation parameters of the dehumidification mechanism.

[0029] Furthermore, the electrode drying device also includes a structure detection component, which is electrically connected to the controller;

[0030] The structural detection component is used to detect the internal structural data of the electrode to be dried and transmit it to the control component; the control component can adjust the output power of the light source module and / or adjust the drainage control parameters of the dehumidification mechanism based on the internal structural data; the internal structural data is used to characterize the internal structural integrity of the electrode to be dried.

[0031] Furthermore, the electrode to be dried has an electrode surface, and the electrode drying device satisfies at least one of the following characteristics:

[0032] The angle between the optical axis of the emitted light beam irradiating the electrode to be dried and the surface of the electrode is greater than 30°;

[0033] The angle between the airflow direction of the dehumidification mechanism blowing onto the electrode to be dried and the surface of the electrode is less than 60°.

[0034] The vector angle between the airflow direction of the dehumidification mechanism blowing onto the electrode to be dried and the transmission direction of the electrode to be dried is 45-135°.

[0035] Furthermore, the emission source of the light source module includes one or more of the following: light-emitting diodes, infrared lamps, microwaves, lasers, and vertical cavity surface-emitting lasers.

[0036] On the other hand, this application provides an electrode drying method, applied to the electrode drying apparatus described above, comprising:

[0037] In response to a drying trigger event of the electrode to be dried, the transmission mechanism is controlled to move the electrode to be dried so that the electrode to be dried enters the coverage area of ​​the emitted light beam;

[0038] The output power of the light source module is controlled so that, during the drying process of the electrode to be dried, the energy density of the emitted light beam received by the electrode to be dried gradually decreases as the drying time increases;

[0039] During the drying process, the dehumidification mechanism is controlled to discharge the steam generated during the drying process of the electrode sheet to be dried.

[0040] Furthermore, the light source module includes multiple first light source modules, which are arranged sequentially along the transmission direction of the electrode to be dried. Controlling the output power of the light source module includes:

[0041] The output power of each of the plurality of first light source modules is controlled respectively, so that the energy density of the emitted light beams output by the plurality of first light source modules gradually decreases along the transmission direction.

[0042] Furthermore, the light source module includes at least one second light source module, and controlling the output power of the light source module includes:

[0043] The output power of the second light source module is adjusted so that, during the drying process of the electrode to be dried, the energy density of the emitted beam from the second light source module gradually decreases as the drying time increases.

[0044] On the other hand, this application provides an electrode drying control device, comprising:

[0045] First control module: In response to the drying trigger event of the electrode to be dried, control the transmission mechanism to drive the electrode to be dried to move so that the electrode to be dried enters the coverage area of ​​the emitted light beam;

[0046] The second control module is used to control the output power of the light source module so that, during the drying process of the electrode to be dried, the energy density of the emitted light beam received by the electrode to be dried gradually decreases as the drying time increases.

[0047] The third control module is used to control the dehumidification mechanism to discharge the steam generated during the drying process of the electrode to be dried during the drying process.

[0048] On the other hand, this application provides a computer-readable storage medium storing at least one instruction or at least one program, wherein the at least one instruction or the at least one program is loaded by a processor and executed as described above for the electrode drying method.

[0049] On the other hand, this application provides an electronic device for implementing the above-described electrode drying method. The electronic device includes a processor and a memory. The memory stores at least one instruction or at least one program segment. The at least one instruction or the at least one program segment is loaded and executed by the processor to implement the electrode drying method as described above.

[0050] The electrode drying apparatus and method provided in this application have the following beneficial effects:

[0051] The electrode drying apparatus of this application includes a light source module, a transmission mechanism, and a controller. The light source module generates and outputs an emitted light beam for drying the electrode to be dried. The transmission mechanism moves the electrode to be dried and guides it into the coverage area of ​​the emitted light beam. The controller controls the output power of the light source module so that the energy density of the emitted light beam received by the electrode to be dried varies with the drying time during the drying process. As the drying time increases, the energy density of the emitted light beam received by the electrode to be dried gradually decreases. In the initial stage of drying, the electrode to be dried has a higher humidity, so the energy density of the emitted light beam received by the electrode to be dried can be set to be higher, which can improve the drying efficiency of the electrode to be dried. In the final stage of drying, the electrode to be dried has a lower humidity, so the energy density of the emitted light beam received by the electrode to be dried can be set to be lower, which can not only ensure the structural integrity of the electrode and improve the mechanical and electrochemical properties of the electrode, but also save energy and reduce costs. The output power of the light source module of this application is adjustable, which can reduce the number of light source modules and reduce the space occupied by the device, which is conducive to the miniaturization of the device. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the structure of an electrode drying device provided in an embodiment of this application;

[0054] Figure 2 This is a schematic diagram of another electrode drying device provided in an embodiment of this application;

[0055] Figure 3 This is a schematic diagram of another electrode drying device provided in an embodiment of this application;

[0056] Figure 4 This is a schematic diagram showing the positional arrangement of multiple first light source modules provided in an embodiment of this application;

[0057] Figure 5 A schematic diagram of the coverage area of ​​the emitted beams from a plurality of first light source modules provided in an embodiment of this application;

[0058] Figure 6 This is a schematic diagram showing another arrangement of multiple first light source modules provided in an embodiment of this application;

[0059] Figure 7 A schematic diagram of the coverage area of ​​the emitted beam from another plurality of first light source modules provided in an embodiment of this application;

[0060] Figure 8 A schematic diagram of light ray propagation under parallel and divergent light conditions is provided for embodiments of this application;

[0061] Figure 9 A temperature rise simulation curve at a specific depth under light sources with different divergence angles is provided for an embodiment of this application;

[0062] Figure 10 A simulation curve showing the temperature change over time at different depths, provided for an embodiment of this application;

[0063] Figure 11 A simulation curve of temperature distribution at different depths provided for an embodiment of this application;

[0064] Figure 12 A temperature cloud map at 0.1 mm is provided for an embodiment of this application;

[0065] Figure 13 A three-dimensional temperature cloud map provided for an embodiment of this application;

[0066] Figure 14 A schematic flowchart of an electrode drying method provided in an embodiment of this application;

[0067] Figure 15 This is a schematic diagram of the structure of an electrode drying control device provided in an embodiment of this application;

[0068] Figure 16 This is a hardware structure block diagram of an electronic device for implementing an electrode drying method, provided as an embodiment of this application.

[0069] The following is supplementary explanation of the attached figures:

[0070] 10-Light source module; 11-First light source module; 20-Transmission mechanism; 21-Electrode holder to be dried; 30-Dehumidification mechanism; 40-Light homogenizing component; 50-Heat dissipation component; 61-Coverage area of ​​the emitted beam of the first light source module A; 62-Coverage area of ​​the emitted beam of the first light source module B; 63-Coverage area of ​​the emitted beam of the first light source module C; 64-Coverage area of ​​the emitted beam of the first light source module D. Detailed Implementation

[0071] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0072] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0073] The following is in conjunction with the appendix Figure 1-13 The technical solutions described in the embodiments of this application are presented here. The accompanying drawings do not limit the scope of the application as described in the claims.

[0074] This specification provides method operation steps as shown in the embodiments or flowcharts, but based on conventional or non-inventive labor, more or fewer operation steps may be included. The order of steps listed in the embodiments is merely one possible execution order among many steps and does not represent the only possible execution order.

[0075] Please see Figure 1This application provides an electrode drying device, including a light source module 10, a transmission mechanism 20, a dehumidification mechanism 30, and a controller. The light source module 10 generates and outputs an emitted light beam for drying the electrode to be dried. The transmission mechanism 20 drives the electrode to be dried to move and enter the coverage area of ​​the emitted light beam. The controller controls the output power of the light source module 10 so that the energy density of the emitted light beam received by the electrode to be dried changes with the drying time during the drying process. As the drying time increases, the energy density of the emitted light beam received by the electrode to be dried gradually decreases. The dehumidification mechanism 30 is used to discharge the steam generated during the drying process of the electrode to be dried.

[0076] Furthermore, the light source module 10 can be a non-contact light source; for example, the emission source of the light source module 10 may include one or more of the following: light-emitting diode, infrared lamp, microwave, laser, and vertical cavity surface-emitting laser.

[0077] Furthermore, the transmission mechanism 20 can drive the electrode to be dried into the coverage area of ​​the emitted beam, so that the electrode to be dried can be dried in the coverage area of ​​the emitted beam, and can drive the electrode to be dried away from the coverage area of ​​the emitted beam after the electrode has been dried.

[0078] In some embodiments, the transmission mechanism 20 includes a conveyor belt with a drying electrode support 21 on the side of the conveyor belt facing the light source module 10. The conveyor belt supports the drying electrode through the drying electrode support 21 and can drive the drying electrode through the coverage area of ​​the emitted light beam.

[0079] In other embodiments, the transmission mechanism 20 may be a winding and rewinding mechanism; see also Figure 2 A light source module 10 and a dehumidification mechanism 30 can be symmetrically arranged on both sides of the electrode to be dried. The symmetrically arranged light source module 10 dries the electrode to be dried from both sides simultaneously, and the symmetrically arranged dehumidification mechanism 30 discharges the steam generated during the drying process from both sides of the electrode to be dried.

[0080] In some embodiments, the electrode drying apparatus further includes an isolation component that covers the light source module 10 and the dehumidification mechanism 30, and the isolation component can at least partially cover the transmission mechanism 20.

[0081] In some embodiments, the dehumidification mechanism 30 is able to discharge the vapor generated by the electrode to be dried during the drying process from the isolation assembly.

[0082] Furthermore, the dehumidification mechanism 30 can be a wind dehumidification mechanism, which can blow away the steam generated by the electrode to be dried during the drying process and discharge it from the isolation component.

[0083] Furthermore, the exhaust air from the dehumidification unit can be either warm air or normal temperature air.

[0084] Specifically, the controller can adjust the output power of the light source module 10 so that during the drying process of the electrode to be dried, the energy density of the emitted light beam received by the electrode to be dried gradually decreases as the drying time increases. It can be understood that in the early stage of drying, the humidity of the electrode to be dried is relatively high, so the energy density of the emitted light beam received by the electrode to be dried can be set to be relatively high, thus accelerating the drying rate of the electrode to be dried and improving the drying efficiency. As the drying time increases, in the later stage of drying, the humidity of the electrode to be dried is relatively low, so the energy density of the emitted light beam received by the electrode to be dried can be set to be relatively low. This not only prevents over-drying from causing structural defects inside the electrode, thus ensuring the integrity and uniformity of the internal structure of the electrode and improving the mechanical and electrochemical properties of the electrode, but also saves energy and reduces costs. At the same time, the electrode drying device of this application occupies little space, which is conducive to the miniaturization of the device.

[0085] It should be noted that the term "gradually decreasing" in this context can be understood as meaning that, at least initially during drying, the energy density of the emitted light beam received by the electrode to be dried is greater than, at the end of drying, the energy density of the emitted light beam received by the electrode to be dried. If interference or other factors cause a short-term jump in the energy density of the emitted light beam received by the electrode to be dried, as long as the overall trend is decreasing, it can be understood as gradually decreasing and is within the scope of protection of this application.

[0086] In this embodiment of the application, in order to provide the optimal drying rate for the electrode to be dried, the output power of the light source module 10 is controlled and adjusted by the controller based on the actual situation of the electrode to be dried and the target drying conditions, so that the energy density of the emitted light beam received by the electrode to be dried gradually decreases as the drying time increases during the drying process. In this way, the electrode drying device can be flexibly adapted to different electrode drying scenarios.

[0087] In other embodiments, the light source module 10 can generate and output microwaves for drying the electrode to be dried; the transmission mechanism 20 can drive the electrode to be dried to move and enter the microwave coverage area; the controller can control the output power of the light source module 10 so that the energy density of the microwaves received by the electrode to be dried changes with the drying time during the drying process; as the drying time increases, the energy density of the microwaves received by the electrode to be dried gradually decreases.

[0088] In this embodiment, the light source module 10 includes a plurality of first light source modules 11, which are arranged sequentially along the transmission direction of the electrode to be dried; the controller can control the output power of each of the plurality of first light source modules 11 so that the energy density of the emitted beams output by the plurality of first light source modules 11 gradually decreases along the transmission direction.

[0089] Furthermore, the multiple first light source modules 11 can generate and output their respective corresponding emitted beams, and the coverage areas of the emitted beams of the multiple first light source modules 11 can be spliced ​​together to form the coverage area of ​​the emitted beam of the light source module 10.

[0090] Specifically, the first light source module 11 can be a non-contact light source; for example, the emission source of the first light source module 11 may include one or more of the following: light-emitting diode, infrared lamp, microwave, laser and vertical cavity surface-emitting laser.

[0091] It is understood that the first light source module 11 includes at least one non-contact light source; specifically, the number and type of non-contact light sources included in the first light source module 11 are determined according to the actual situation, and this application does not limit the number and type of non-contact light sources included in the first light source module 11.

[0092] In some embodiments, please refer to Figure 3 and Figure 4 The light source module 10 includes four first light source modules 11, labeled as first light source module A, first light source module B, first light source module C, and first light source module D, respectively; first light source modules A, B, C, and D are arranged sequentially along the transport direction of the electrode to be dried; please refer to... Figure 5 During the drying process of the electrode to be dried, the electrode first enters the coverage area 61 of the emitted beam of the first light source module A, then sequentially enters the coverage area 62 of the emitted beam of the first light source module B and the coverage area 63 of the emitted beam of the first light source module C, and finally enters the coverage area 64 of the emitted beam of the first light source module D. When the electrode leaves the coverage area 64 of the emitted beam of the first light source module D, the degree of drying of the electrode meets the target drying conditions, and thus the drying of the electrode is completed.

[0093] Specifically, Figure 3 The direction of the arrow in the image indicates the transport direction of the electrode to be dried.

[0094] Furthermore, the output power of the first light source module A is greater than or equal to the output power of the first light source module B, the output power of the first light source module B is greater than or equal to the output power of the first light source module C, and the output power of the first light source module C is greater than or equal to the output power of the first light source module D.

[0095] Preferably, the output power of the first light source module A is greater than the output power of the first light source module B, the output power of the first light source module B is greater than the output power of the first light source module C, and the output power of the first light source module C is greater than the output power of the first light source module D.

[0096] It should be noted that the output power of the first light source module A can be a constant or a variable value. If the output power of the first light source module A is a variable value, preferably, during the drying process of the electrode to be dried, the output power of the first light source module A gradually decreases as the drying time increases. Correspondingly, the first light source modules B, C, and D can all be set the same as the first light source module A.

[0097] It is understood that, for example, when the output power of both the first light source module A and the first light source module B are variable values, the minimum output power of the first light source module A is greater than or equal to the maximum output power of the first light source module B.

[0098] It should be noted that the rate of decrease of the output power of the first light source module A, the first light source module B, the first light source module C and the first light source module D depends on the actual situation. It can be a uniform decrease or a variable decrease, a slow decrease or a rapid decrease.

[0099] In some specific embodiments, when the transmission rate of the electrode to be dried is relatively high, the output power of the first light source module A, the first light source module B, the first light source module C and the first light source module D can be set to a fixed value. Alternatively, the first light source module 11 can be added along the transmission direction of the electrode to be dried according to the actual situation, so that the electrode to be dried can be dried after passing through each first light source module 11.

[0100] In some other specific embodiments, when the transmission rate of the electrode to be dried is slow, the output power of each of the first light source module A, first light source module B, first light source module C and first light source module D can be set to a variable value; specifically, the output power of each of the first light source module A, first light source module B, first light source module C and first light source module D can be set to gradually decrease as the drying time increases, and for example, the minimum output power of the first light source module B is greater than or equal to the maximum output power of the first light source module C.

[0101] Specifically, the area sizes of the emitted beam coverage areas 61 of the first light source module A, 62 of the first light source module B, 63 of the first light source module C, and 64 of the first light source module D can be the same.

[0102] In some embodiments, the electrode to be dried is small, and the coverage area of ​​the emitted beam of the first light source module 11 can cover at least one electrode to be dried. In a specific application scenario, the coverage area 61 of the emitted beam of the first light source module A can cover two electrodes to be dried. Correspondingly, the coverage areas 62, 63, and 64 of the emitted beams of the first light source module B, C, and D can all cover two electrodes to be dried. The two electrodes to be dried can sequentially enter the coverage areas 61, 62, 63, 64, and 64 of the emitted beams of the first light source module A, B, C, and D under the drive of the transmission mechanism 20, and respectively... The two electrodes to be dried remain in their respective preset durations within the coverage areas 61, 62, 63, and 64 of the emitted beams from the first light source module A, the first light source module B, and the first light source module C and D. This means that the two electrodes are dried intermittently. Alternatively, the two electrodes to be dried can sequentially enter the coverage areas 61, 62, 63, and 64 of the emitted beams from the first light source module A, the first light source module B, and the first light source module C and D, driven by the transmission mechanism 20. During this process, the two electrodes to be dried are always in motion under the drive of the transmission mechanism 20. This means that the two electrodes are dried while moving.

[0103] In some embodiments, the electrode to be dried is relatively large. Driven by the transmission mechanism 20, the larger electrode sequentially enters the coverage area 61 of the emitted beam of the first light source module A, the coverage area 62 of the emitted beam of the first light source module B, the coverage area 63 of the emitted beam of the first light source module C, and the coverage area 64 of the emitted beam of the first light source module D to complete the drying of the electrode. It can be understood that the drying process of the larger electrode is the same as that of the smaller electrode. The larger electrode can be dried intermittently or while moving.

[0104] In some embodiments, please refer to Figure 6 and Figure 7 If the electrode to be dried is large and perpendicular to the transmission direction of the electrode to be dried, at least two first light source modules 11 can be set so that the coverage area of ​​the emitted beams corresponding to the multiple first light source modules 11 can be spliced ​​to cover the large electrode to be dried.

[0105] For details, please see Figure 6 and Figure 7The power settings of at least two first light source modules 11 along the transmission direction perpendicular to the electrode to be dried can be synchronized; in the example type, the power of the two first light source modules A arranged along the transmission direction perpendicular to the electrode to be dried is the same.

[0106] It should be noted that the number of the first light source module 11 depends on the actual situation, and this application does not limit the number of the first light source module 11.

[0107] Specifically, the controller can control the output power of each of the multiple first light source modules 11 so that the energy density of the emitted light beams output by the multiple first light source modules 11 gradually decreases along the transmission direction. In this way, the energy density of the emitted light beams received by the electrode to be dried gradually decreases as the drying time increases during the drying process, so as to provide the electrode to be dried with the optimal drying rate.

[0108] In some embodiments, the light source module 10 includes at least one second light source module; the controller can adjust the output power of the second light source module respectively so that during the drying process of the electrode to be dried, the energy density of the emitted beam output by the second light source module gradually decreases as the drying time increases.

[0109] Furthermore, at least one second light source module can generate and output its own corresponding emitted beam, and the coverage area of ​​the emitted beam of each of the at least one second light source module can be spliced ​​together to form the coverage area of ​​the emitted beam of the light source module 10.

[0110] Specifically, the second light source module can be a non-contact light source; for example, the emission source of the second light source module can include one or more of the following: light-emitting diodes, infrared lamps, microwaves, lasers, and vertical cavity surface-emitting lasers.

[0111] In some embodiments, the light source module 10 includes a second light source module. The transmission mechanism 20 can drive the electrode to be dried to move and enter the coverage area of ​​the emitted beam of the second light source module. The controller can adjust the output power of the second light source module so that during the drying process of the electrode to be dried, as the drying time increases, the energy density of the emitted beam output by the second light source module gradually decreases. In this way, the energy density of the emitted beam received by the electrode to be dried gradually decreases as the drying time increases, so as to provide the electrode to be dried with the optimal drying rate.

[0112] Specifically, the output power of the second light source module can be changed by altering the continuous current, or by changing the duty cycle of the PWM (Pulse Width Modulation).

[0113] In one specific embodiment, the coverage area of ​​the emitted beam of the second light source module can cover the electrode to be dried; during the drying process of the electrode to be dried, the electrode to be dried enters the coverage area of ​​the emitted beam of the second light source module under the drive of the transmission mechanism 20; when the electrode to be dried leaves the coverage area of ​​the emitted beam of the second light source module, the degree of drying of the electrode to be dried meets the target drying conditions, and thus the drying of the electrode to be dried is completed.

[0114] It is understandable that the electrode to be dried stops moving after entering the coverage area of ​​the emitted beam of the second light source module, and receives the emitted beam output by the second light source module in a stationary state until the degree of drying of the electrode to be dried meets the target drying conditions; that is, the electrode to be dried is dried in a stationary state.

[0115] It should be noted that when the electrode to be dried is large, the larger electrode can move through the coverage area of ​​the emitted beam of the second light source module under the drive of the transmission mechanism 20. The larger electrode will always remain in motion, that is, it will be dried while moving.

[0116] Compared with the long drying lines in the prior art, this application can complete the drying of the electrode sheet to be dried by using a second light source module. In this way, the space occupied by the electrode drying device can be greatly reduced, and the device size is small.

[0117] It should be noted that the number of second light source modules depends on the actual situation, and this application does not limit the number of second light source modules.

[0118] In other embodiments, the light source module 10 can flexibly combine the first light source module 11 and the second light source module according to the actual application scenario, so as to provide the electrode to be dried with the optimal drying rate, thereby improving the drying efficiency of the electrode and the mechanical and electrochemical properties of the electrode.

[0119] In this embodiment of the application, the electrode drying device further includes a light homogenizing component 40, which is disposed on the outgoing light path of the light source module 10. The light homogenizing component 40 is used to receive the outgoing light beam, homogenize the outgoing light beam, and project the homogenized outgoing light beam onto the coverage area.

[0120] In the prior art, the light output path of the light source module 10 does not have a light homogenizing component 40. Because there is no light homogenizing component 40, the output beam of the light source module 10 has a large output angle. The output beam of the light source module 10 is difficult to project onto the electrode to be dried with high utilization, resulting in low energy utilization and poor uniformity of the output beam received by the electrode to be dried.

[0121] In this embodiment, a light homogenizing component 40 is provided on the output light path of the light source module 10 to homogenize the output light beam of the light source module 10. In this way, the output light beam of the light source module 10 can be projected onto the electrode to be dried with high utilization and high uniformity, resulting in high energy utilization and energy saving and cost reduction.

[0122] Furthermore, the electrode to be dried receives a highly uniform output beam, which can prevent localized under-drying or over-drying of the electrode, improve the drying uniformity of the electrode, and enhance the drying efficiency and mechanical and electrochemical properties of the electrode.

[0123] It is understandable that the reflectivity of the light homogenizing component 40 has a significant impact on the transmission of beam energy. In order to ensure the utilization rate of the emitted beam of the light source module 10, preferably, the reflectivity of the light homogenizing component 40 is greater than or equal to 90%.

[0124] Specifically, the light-diffusing component 40 can be a reflective light-diffusing plate or a light-diffusing rod.

[0125] In some embodiments, the electrode drying apparatus further includes a focusing component, which is disposed in the output light path of the light source module 10, and a light homogenizing component 40 is disposed in the output light path of the focusing component. The focusing component is used to receive the output light beam from the light source module 10, perform focusing processing on the output light beam, and project the focused output light beam onto the light homogenizing component 40. In this way, the output light beam from the light source module 10 can be better focused, thereby further improving the utilization rate of the output light beam from the light source module 10.

[0126] Specifically, the light-concentrating component can be a lens component; for example, the light-concentrating component may include a first plano-convex lens and a second plano-convex lens, the first plano-convex lens is disposed on the output light path of the light source module 10, the second plano-convex lens is disposed on the output light path of the first plano-convex lens, and the light-uniforming component 40 is disposed on the output light path of the second plano-convex lens.

[0127] In some embodiments, the electrode drying apparatus may include multiple light-diffusing components 40. The first light source module 11 and / or the second light source module may each be configured with a separate light-diffusing component 40, or two or three adjacent light-diffusing components may share a single light-diffusing component 40. Please refer to [link to relevant documentation]. Figure 4 and Figure 6 The number of light-concentrating components can be configured the same as the number of light-dispersing components 40.

[0128] It should be noted that the number of light-diffusing components 40 and light-concentrating components is determined according to the actual situation, and this application does not limit the number of light-diffusing components 40 and light-concentrating components.

[0129] Please see Figure 8 , Figure 8a is a schematic diagram of light ray propagation under parallel light from a large-sized light spot. Figure 8 b is a schematic diagram of light ray propagation under parallel light from a small light spot. Figure 8 c is a schematic diagram of light travel under divergent light from a large-sized spot. Figure 8 d is a schematic diagram of light propagation under divergent light from a small-sized spot, where the denser the light rays, the greater the energy density, and H is the penetration depth; based on Figure 8 It can be seen that the incident light density of the divergent light emitted from a divergent light source is lower.

[0130] Please see Figure 9 , Figure 9 Simulated temperature rise curves at specific depths under light sources with different divergence angles are shown; the relevant parameters of the simulation structure are detailed in Table 1; the spot size is 10 mm, and the energy density is 125 mW / cm². 2 The luminous flux density is 5 J / cm². 2 The light source mode is continuous mode. Based on Figure 9 It can be seen that for a constant spot size (10 mm) and flux (5 J / cm2), a larger beam angle will cause the surface temperature to rise, while the temperature at the depth will drop; if the angle is greater than 30°, such as 45°, the downward light energy is significantly reduced; from the simulation results, 30° is a critical value; light with a 10 mm spot size and a divergence angle less than 30° and parallel light have similar effects on the temperature rise of the target.

[0131] Table 1

[0132]

[0133]

[0134] Furthermore, Figure 10 Simulation curves showing temperature changes over time at different depths. Figure 11 Simulation curves for temperature distribution at different depths. Figure 12 This is a temperature contour map at 0.1 mm. Figure 13 This is a 3D temperature cloud map; the simulation model parameters are: dimensions of 0.1*0.1*0.09cm, and an absorption coefficient of 100cm². -1 The scattering coefficient is 100 cm⁻¹ -1 Specific heat capacity is 3 J / cm³ 3 K, thermal conductivity 0.003 W / cmK, refractive index 1.3; Simulated light source parameters: size 0.05*0.05cm, divergence angle 90°, power 10W / cm 2 The heating time was 10 seconds, and the light source was positioned 0.01 cm above the surface; the ambient temperature was 25°C; temperature monitoring points were located at 100 μm, 200 μm, 300 μm, and 400 μm below the surface; based on... Figure 10-13 It is known that light heating can achieve a temperature rise of 80°C in 5 seconds and has a sufficiently high penetration depth, allowing for simultaneous heating inside the electrode.

[0135] In this embodiment of the application, the electrode drying device further includes a dehumidification mechanism, which is used to at least partially discharge the solvent inside the electrode to be dried before the electrode to be dried enters the coverage area; thus, the drying efficiency of the electrode to be dried can be further improved.

[0136] In this embodiment, the dehumidification mechanism includes a rolling assembly that can roll on the electrode to be dried to at least partially expel the solvent from the electrode.

[0137] Specifically, before the electrode to be dried enters the coverage area of ​​the emitted beam, the rolling assembly can roll on the electrode to be dried to at least partially expel the solvent inside the electrode. For example, the solvent can be water, thus improving the drying efficiency of the electrode.

[0138] Specifically, the scrolling component may include a roller.

[0139] In some embodiments, the dehumidification mechanism includes an air knife assembly with its air outlet facing the covered area, the air knife assembly being used to at least partially blow out the solvent within the electrode to be dried.

[0140] Specifically, before the electrode to be dried enters the coverage area of ​​the emitted beam, the air knife assembly can blow out at least part of the solvent inside the electrode to be dried by blowing out compressed air. For example, the solvent can be water, thus improving the drying efficiency of the electrode to be dried.

[0141] In this embodiment, at least a portion of the emitted light beam from the light source module 10 has a preset wavelength band, and the emitted light beam of the preset wavelength band can penetrate the electrode to be dried.

[0142] In the prior art, hot air evaporation can only heat the surface of the solvent coated on the electrode to be dried, and then the lower layer of solvent is carried up by capillary action to be heated by the hot air, resulting in low evaporation and drying efficiency. In this application, however, the emitted light beam of the preset wavelength can penetrate each layer of solvent, so that each layer of solvent is heated simultaneously, thereby further improving the evaporation and drying efficiency of the electrode to be dried.

[0143] In some embodiments, the light source module 10 can generate and output an emitted light beam of a preset wavelength, which can penetrate the electrode to be dried.

[0144] In other embodiments, the light source module 10 is capable of generating and outputting emitted light beams of multiple wavelengths, including at least an emitted light beam of a preset wavelength.

[0145] Furthermore, the preset wavelength of the emitted beam can be selected based on the material, thickness, and type of solvent coated on the electrode to be dried.

[0146] In this embodiment of the application, the electrode drying device further includes a first temperature and humidity detection component and a visualization component, which are electrically connected. The first temperature and humidity detection component is used to detect the drying temperature and / or humidity of multiple areas of the electrode to be dried and transmit the data to the visualization component for display. In this way, the evaporation status of the electrode to be dried can be displayed intuitively.

[0147] Specifically, the first temperature and humidity detection component may include an infrared imager, such as an infrared camera.

[0148] Specifically, based on the first temperature and humidity detection component, it can process and acquire the drying temperature and / or humidity of multiple areas of the electrode to be dried; the visualization component can receive and display the drying temperature and / or humidity of multiple areas of the electrode to be dried, so as to intuitively show the evaporation state of the electrode to be dried.

[0149] In this embodiment, the first temperature and humidity detection component is electrically connected to the controller; based on the current drying temperature and / or humidity of multiple areas of the electrode to be dried, and the target drying conditions, the controller can adjust the output power of the light source module 10 until the current drying temperature and / or humidity of the electrode to be dried meets the target drying conditions; thus, adaptive supplementary lighting of the electrode drying device can be realized to improve the drying efficiency and drying effect of the electrode to be dried.

[0150] Specifically, with the target drying conditions as the objective, the current drying temperature and / or humidity of multiple areas of the electrode to be dried are calculated using a preset algorithm. Supplemental irradiation is then applied to areas that fail to meet the target drying conditions until the drying degree of these areas meets the target drying conditions.

[0151] In this embodiment, the electrode drying apparatus further includes a second temperature and humidity detection component, which is electrically connected to the controller. The second temperature and humidity detection component detects the air temperature and / or humidity of the electrode drying space and transmits this information to the controller. Based on the air temperature and / or humidity of the electrode drying space, and the target temperature and humidity, the controller can adjust the airflow regulation parameters of the dehumidification mechanism. This allows the air temperature and / or humidity of the electrode drying space to be maintained within a controllable range, thereby improving the electrode drying efficiency.

[0152] Specifically, the airflow regulation parameters of the dehumidification mechanism can include the wind speed and air volume of the dehumidification mechanism.

[0153] In this embodiment, the electrode drying device further includes a structure detection component electrically connected to the controller. The structure detection component is used to detect the internal structure data of the electrode to be dried and transmit it to the control component. The control component can adjust the output power of the light source module 10 and / or adjust the drainage control parameters of the dehumidification mechanism 30 based on the internal structure data. The internal structure data is used to characterize the internal structural integrity of the electrode to be dried. In this way, over-drying can prevent structural defects from being generated inside the electrode, so as to ensure the integrity and uniformity of the internal structure of the electrode and improve the mechanical and electrochemical properties of the electrode.

[0154] Specifically, the structure detection component can use X-rays to detect the internal structure data of the electrode to be dried.

[0155] Specifically, the drainage control parameters of the dehumidification mechanism 30 may include the power, air velocity, and air temperature of the dehumidification mechanism 30.

[0156] In this embodiment, the electrode to be dried has an electrode surface, and the angle between the optical axis of the emitted light beam irradiating the electrode to be dried and the electrode surface is greater than 30°; thus, the energy utilization rate of the light source module 10 can be improved, and the drying efficiency of the electrode to be dried can be improved.

[0157] It is understandable that the electrode surface is the large surface of the electrode to be dried that receives the emitted light beam, and it is also the side of the electrode to be dried that is away from the electrode support position 21.

[0158] Preferably, the optical axis of the emitted light beam irradiating the electrode to be dried is perpendicular to the electrode surface.

[0159] In this embodiment, the angle between the airflow direction of the dehumidification mechanism 30 blowing onto the electrode to be dried and the electrode surface is less than 60°; thus, the steam discharge efficiency during the drying process of the electrode to be dried can be improved, thereby improving the drying efficiency of the electrode to be dried.

[0160] Preferably, the airflow direction of the dehumidification mechanism 30 blowing onto the electrode to be dried is parallel to the electrode surface.

[0161] In this embodiment, the vector angle between the airflow direction of the dehumidification mechanism 30 blowing onto the electrode to be dried and the transmission direction of the electrode to be dried is 45-135°; thus, the steam discharge efficiency during the drying process of the electrode to be dried can be further improved, thereby improving the drying efficiency of the electrode to be dried.

[0162] Preferably, the airflow direction of the dehumidification mechanism 30 blowing onto the electrode to be dried is perpendicular to the transport direction of the electrode to be dried.

[0163] This embodiment of the application, by setting the power of the light source module 10 to be adjustable and setting the light homogenizing component 40 in the light path of the light source module 10, can improve the adhesion, cohesive strength and adhesion of the electrode, ensure the internal consistency of the microstructure of the electrode, help to form a uniform, defect-free and mechanically intact porous structure, improve electron transport capability, and at the same time, improve the electrochemical performance of the electrode, increase the energy density of the electrode, battery capacity and charge and discharge rate, enhance battery stability and reduce resistance.

[0164] In this embodiment of the application, the electrode drying device further includes a heat dissipation component 50, which is used to dissipate heat for the light source module 10. The heat dissipation component 50 can be active heat dissipation or passive heat dissipation.

[0165] The following describes specific embodiments of this application based on the above technical solution.

[0166] Example 1

[0167] Please see Figure 1-7 Embodiment 1 provides an electrode drying device, including a light source module 10, a transmission mechanism 20, a dehumidification mechanism 30, and a controller. The light source module 10 can generate and output an emitted light beam for drying the electrode to be dried. The transmission mechanism 20 can drive the electrode to be dried to move and enter the coverage area of ​​the emitted light beam. The controller can control the output power of the light source module 10 so that the energy density of the emitted light beam received by the electrode to be dried changes with the drying time during the drying process. As the drying time increases, the energy density of the emitted light beam received by the electrode to be dried gradually decreases. The dehumidification mechanism 30 is used to discharge the steam generated during the drying process of the electrode to be dried.

[0168] The transmission mechanism 20 includes a conveyor belt, and a drying electrode support position 21 is provided on the side of the conveyor belt facing the light source module 10. The conveyor belt supports the drying electrode through the drying electrode support position 21, and the conveyor belt can drive the drying electrode through the coverage area of ​​the emitted light beam.

[0169] The electrode drying device also includes an isolation component, which covers the light source module 10 and the dehumidification mechanism 30. The isolation component can at least partially cover the transmission mechanism 20.

[0170] The dehumidification mechanism 30 can be a wind dehumidification mechanism, which can blow away the steam generated by the electrode to be dried during the drying process and discharge it from the isolation component.

[0171] The light source module 10 includes four first light source modules 11, labeled as first light source module A, first light source module B, first light source module C, and first light source module D, respectively. The first light source modules A, B, C, and D are arranged sequentially along the transmission direction of the electrode to be dried. The controller can control the output power of the first light source modules A, B, C, and D respectively, so that the energy density of the emitted light beams from the first light source modules A, B, C, and D gradually decreases along the transmission direction.

[0172] The output power of the first light source module A, the first light source module B, the first light source module C, and the first light source module D are all constant values. The output power of the first light source module A is greater than that of the first light source module B, the output power of the first light source module B is greater than that of the first light source module C, and the output power of the first light source module C is greater than that of the first light source module D.

[0173] During the drying process of the electrode to be dried, the electrode first enters the coverage area 61 of the emitted beam of the first light source module A, then sequentially enters the coverage areas 62 and 63 of the emitted beam of the first light source module B, and finally enters the coverage area 64 of the emitted beam of the first light source module D. When the electrode leaves the coverage area 64 of the emitted beam of the first light source module D, the degree of drying of the electrode meets the target drying conditions, thus completing the drying of the electrode. The electrode is constantly in motion under the drive of the transmission mechanism 20; it can be understood that the electrode is dried while moving.

[0174] The first light source module 11 may include a non-contact light source; for example, the first light source module 11 may include one or more of the following: light-emitting diodes, infrared lamps, microwaves, lasers, and vertical cavity surface-emitting lasers.

[0175] The coverage area 61 of the emitted beam from the first light source module A can cover two electrodes to be dried. Correspondingly, the coverage areas 62, 63, and 64 of the emitted beams from the first light source module B, C, and D can all cover two electrodes to be dried. The two electrodes to be dried can sequentially enter the coverage areas 61, 62, 63, and 64 of the emitted beams from the first light source module A, B, C, and D under the drive of the transmission mechanism 20. During this process, the two electrodes to be dried are always in motion under the drive of the transmission mechanism 20. It can be understood that the two electrodes to be dried are dried while moving.

[0176] The electrode drying device also includes four light-diffusing components 40, which are arranged one-to-one with the first light source module 11. The light-diffusing components 40 are arranged on the output light path of the first light source module 11. The light-diffusing components 40 are used to receive the output light beam, perform light-diffusing processing on the output light beam, and project the light-diffusing output light beam into the coverage area.

[0177] The electrode drying device also includes a dehumidification mechanism, which is used to at least partially remove the solvent from the electrode to be dried before it enters the coverage area.

[0178] The dehumidification mechanism includes a rolling assembly that can roll on the electrode to be dried to at least partially expel the solvent from the electrode.

[0179] The first light source module 11 can generate and output an emitted light beam of a preset wavelength, which can penetrate the electrode to be dried.

[0180] The electrode drying device also includes a temperature and humidity detection component and a visualization component, which are electrically connected. The temperature and humidity detection component is used to detect the drying temperature and / or humidity of multiple areas of the electrode to be dried and transmit the data to the visualization component for display.

[0181] The temperature and humidity detection component is electrically connected to the controller; based on the current drying temperature and target drying conditions of multiple areas of the electrode to be dried, the controller can adjust the output power of the light source module 10 until the current drying temperature of the electrode to be dried meets the target drying conditions.

[0182] The electrode drying device also includes a structure detection component, which is electrically connected to the controller. The structure detection component is used to detect the internal structure data of the electrode to be dried and transmit it to the control component. The control component can adjust the output power of the light source module 10 and / or adjust the drainage control parameters of the dehumidification mechanism 30 based on the internal structure data. The internal structure data is used to characterize the internal structural integrity of the electrode to be dried.

[0183] The electrode to be dried has an electrode surface; the optical axis of the emitted light beam irradiating the electrode to be dried is perpendicular to the electrode surface; the airflow direction of the dehumidification mechanism 30 blowing onto the electrode to be dried is parallel to the electrode surface; and the airflow direction of the dehumidification mechanism 30 blowing onto the electrode to be dried is perpendicular to the transmission direction of the electrode to be dried.

[0184] Example 2

[0185] The difference between Embodiment 2 and Embodiment 1 lies in the arrangement of the light source module 10, the dehumidification mechanism, and the transmission structure. The similarities with Embodiment 1 will not be repeated here. The differences between Embodiment 2 and Embodiment 1 are explained below:

[0186] The light source module 10 includes a second light source module. The transmission mechanism 20 can drive the electrode to be dried to move and enter the coverage area of ​​the emitted beam of the second light source module. The controller can adjust the output power of the second light source module so that during the drying process of the electrode to be dried, as the drying time increases, the energy density of the emitted beam output by the second light source module gradually decreases, thereby making the energy density of the emitted beam received by the electrode to be dried gradually decrease during the drying process of the electrode to be dried as the drying time increases.

[0187] The coverage area of ​​the emitted beam from the second light source module can cover the electrode to be dried. During the drying process of the electrode, the electrode to be dried enters the coverage area of ​​the emitted beam from the second light source module under the drive of the transmission mechanism 20. When the electrode to be dried leaves the coverage area of ​​the emitted beam from the second light source module, the degree of drying of the electrode to be dried meets the target drying conditions. Thus, the drying of the electrode to be dried is completed.

[0188] Once the electrode to be dried enters the coverage area of ​​the emitted beam from the second light source module, it stops moving and receives the emitted beam from the second light source module in a stationary state until the degree of drying of the electrode to be dried meets the target drying conditions; that is, the electrode to be dried is dried in a stationary state.

[0189] The second light source module may include a non-contact light source; for example, the second light source module may include one or more of the following: light-emitting diodes, infrared lamps, microwaves, lasers, and vertical-cavity surface-emitting lasers.

[0190] The dehumidification mechanism includes an air knife assembly with its air outlet facing the coverage area. Before the electrode to be dried enters the coverage area of ​​the emitted beam, the air knife assembly can blow out at least part of the solvent inside the electrode to be dried by blowing out compressed air.

[0191] The transmission mechanism 20 can be a winding and rewinding mechanism. A second light source module, a dehumidification mechanism 30, and an air knife assembly can be symmetrically arranged on both sides of the electrode to be dried. The symmetrically arranged second light source module dries the electrode to be dried simultaneously from both sides. The symmetrically arranged dehumidification mechanism 30 discharges the steam generated during the drying process of the electrode to be dried simultaneously from both sides. The symmetrically arranged air knife assembly blows out at least part of the solvent inside the electrode to be dried from both sides simultaneously using compressed air.

[0192] Example 3

[0193] The difference between Embodiment 3 and Embodiment 1 lies in the arrangement of the light source module 10. The similarities with Embodiment 1 will not be repeated here. The differences between Embodiment 3 and Embodiment 1 are explained below:

[0194] During the drying process of the electrode to be dried, the electrode first enters the coverage area 61 of the emitted beam of the first light source module A, then sequentially enters the coverage area 62 of the emitted beam of the first light source module B and the coverage area 63 of the emitted beam of the first light source module C, and finally enters the coverage area 64 of the emitted beam of the first light source module D. When the electrode leaves the coverage area 64 of the emitted beam of the first light source module D, the degree of drying of the electrode meets the target drying conditions, and the drying of the electrode is thus completed. The electrode is always in motion under the drive of the transmission mechanism 20. It can be understood that the electrode is dried while moving.

[0195] The output power of each of the first light source modules A, B, C, and D is a variable value; as the drying time increases, the output power of the first light source module A gradually decreases; as the drying time increases, the output power of the first light source module B gradually decreases; as the drying time increases, the output power of the first light source module C gradually decreases; as the drying time increases, the output power of the first light source module D gradually decreases.

[0196] The minimum output power of the first light source module A can be greater than the maximum output power of the first light source module B, the minimum output power of the first light source module B can be greater than the maximum output power of the first light source module C, and the minimum output power of the first light source module C can be greater than the maximum output power of the first light source module D.

[0197] The output power of each of the first light source modules A, B, C, and D decreases slowly.

[0198] Please see Figure 14 This application provides a method for drying electrode sheets, including:

[0199] S1401. In response to a drying trigger event of the electrode to be dried, the control transmission mechanism 20 drives the electrode to be dried to move so that the electrode to be dried enters the coverage area of ​​the emitted beam.

[0200] S1402. Control the output power of the light source module 10 so that during the drying process of the electrode to be dried, the energy density of the emitted light beam received by the electrode to be dried gradually decreases as the drying time increases.

[0201] In some embodiments, the light source module 10 includes a plurality of first light source modules 11, which are arranged sequentially along the transport direction of the electrode to be dried. S1402 includes:

[0202] The output power of each of the multiple first light source modules 11 is controlled respectively, so that the energy density of the emitted light beams output by the multiple first light source modules 11 along the transmission direction gradually decreases, thereby making the energy density of the emitted light beams received by the electrode to be dried gradually decrease as the drying time increases during the drying process of the electrode to be dried.

[0203] In some embodiments, the light source module 10 includes at least one second light source module, and S1402 includes:

[0204] The output power of the second light source module is adjusted so that, during the drying process of the electrode to be dried, the energy density of the emitted light beam output by the second light source module gradually decreases as the drying time increases, thereby making the energy density of the emitted light beam received by the electrode to be dried gradually decrease as the drying time increases.

[0205] S1403. During the drying process, the dehumidification mechanism 30 is controlled to discharge the steam generated during the drying process of the electrode to be dried.

[0206] Please see Figure 15 This application provides an electrode drying control device, comprising:

[0207] First control module 1510: In response to a drying trigger event of the electrode to be dried, control the transmission mechanism 20 to move the electrode to be dried so that the electrode to be dried enters the coverage area of ​​the emitted light beam.

[0208] The second control module 1520 is used to control the output power of the light source module 10 so that, during the drying process of the electrode to be dried, the energy density of the emitted light beam received by the electrode to be dried gradually decreases as the drying time increases.

[0209] The third control module 1530 is used to control the dehumidification mechanism 30 to discharge the steam generated during the drying process of the electrode to be dried during the drying process.

[0210] In this embodiment of the application, the second control module 1520 includes:

[0211] First control unit: used to control the output power of each of the multiple first light source modules 11 respectively, so that the energy density of the emitted light beams output by the multiple first light source modules 11 along the transmission direction gradually decreases, thereby making the energy density of the emitted light beams received by the electrode to be dried gradually decrease as the drying time increases during the drying process of the electrode to be dried.

[0212] In this embodiment of the application, the second control module 1520 includes:

[0213] First control unit: used to adjust the output power of the second light source module so that during the drying process of the electrode to be dried, as the drying time increases, the energy density of the emitted light beam output by the second light source module gradually decreases, thereby making the energy density of the emitted light beam received by the electrode to be dried gradually decrease during the drying process of the electrode to be dried.

[0214] The control device and method embodiments described above are based on the same application concept.

[0215] Please refer to Figure 16 This application provides an electronic device for implementing the above-described electrode drying method. The electronic device includes a processor and a memory. The memory stores at least one instruction or at least one program segment. The at least one instruction or the at least one program segment is loaded and executed by the processor to implement the electrode drying method provided in the above-described method embodiments.

[0216] Memory can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in memory.

[0217] The memory may primarily include a program storage area and a data storage area. The program storage area may store the operating system, applications required for the functions, etc.; the data storage area may store data created based on the use of the device, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0218] Accordingly, the memory may also include a memory controller to provide the processor with access to the memory.

[0219] The method embodiments provided in this application can be executed in a mobile terminal, computer terminal, server or similar computing device, that is, the above-mentioned electronic device may include a mobile terminal, computer terminal, server or similar computing device.

[0220] The aforementioned servers can be independent physical servers, server clusters or distributed systems composed of multiple physical servers, or cloud servers that provide basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms.

[0221] The terminal can be a smartphone, tablet, laptop, desktop computer, smart speaker, smartwatch, etc., but is not limited to these.

[0222] Figure 16 This is a hardware structure block diagram of an electronic device for implementing the above-described electrode drying method, provided in an embodiment of this application. Figure 16 As shown, the electronic device 1600 can vary considerably due to different configurations or performance, and may include one or more central processing units (CPUs) 1610 (processor 1610 may include, but is not limited to, processing devices such as microprocessors MCUs or programmable logic devices FPGAs), a memory 1630 for storing data, and one or more storage media 1620 (e.g., one or more mass storage devices) for storing application programs 1623 or data 1622.

[0223] The memory 1630 and the storage medium 1620 can be temporary or persistent storage. The program stored in the storage medium 1620 may include one or more modules, and each module may include a series of instructions for operating the electronic device.

[0224] Furthermore, the central processing unit 1610 can be configured to communicate with the storage medium 1620 and execute a series of instruction operations in the storage medium 1620 on the electronic device 1600.

[0225] Electronic device 1600 may also include one or more power supplies 1660, one or more wired or wireless network interfaces 1650, one or more input / output interfaces 1640, and / or one or more operating systems 1621, such as Windows Server. TM Mac OS X TM Unix TM Linux TM FreeBSD TM etc.

[0226] The processor 1610 can be an integrated circuit chip with signal processing capabilities, such as a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0227] The input / output interface 1640 can be used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the electronic device 1600.

[0228] In one example, the input / output interface 1640 includes a network interface controller (NIC) that can connect to other network devices via a base station to communicate with the Internet.

[0229] In one example, the input / output interface 1640 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0230] The operating system 1621 may include system programs for handling various basic system services and performing hardware-related tasks, such as the framework layer, core library layer, and driver layer, for implementing various basic business functions and handling hardware-based tasks.

[0231] Those skilled in the art will understand that Figure 16 The structure shown is for illustrative purposes only and does not limit the structure of the electronic device described above. For example, electronic device 1600 may also include... Figure 16 The more or fewer components shown, or having the same Figure 16 The different configurations shown.

[0232] Embodiments of this application also provide a computer-readable storage medium, which can be disposed in an electronic device to store at least one instruction or at least one program related to implementing an electrode drying method in the method embodiments. The at least one instruction or the at least one program is loaded and executed by the processor to implement the electrode drying method provided in the above method embodiments.

[0233] Optionally, in this embodiment, the storage medium may be located in at least one of the multiple network servers in a computer network.

[0234] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0235] Embodiments of this application also provide a computer program product or computer program that includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the methods provided in the various optional implementations described above.

[0236] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0237] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0238] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0239] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrode drying apparatus, characterized in that, It includes a light source module, a transmission mechanism, a dehumidification mechanism, a light-uniforming component, a dehumidification mechanism, a structure detection component, and a controller; the light source module is capable of generating and outputting an emitted light beam for drying the electrode sheet to be dried; The transmission mechanism can drive the electrode to be dried to move and enter the coverage area of ​​the emitted light beam; The controller can control the output power of the light source module so that during the drying process of the electrode to be dried, the energy density of the emitted light beam received by the electrode to be dried changes with the drying time; as the drying time increases, the energy density of the emitted light beam received by the electrode to be dried gradually decreases. The dehumidification mechanism is used to at least partially discharge the solvent from the electrode to be dried before the electrode to be dried enters the covered area; The light-diffusing component is disposed in the outgoing light path of the light source module. The light-diffusing component is used to receive the outgoing light beam, perform light-diffusing processing on the outgoing light beam, and project the light-diffused outgoing light beam onto the coverage area; the reflectivity of the light-diffusing component is greater than or equal to 90%. The dehumidification mechanism is used to remove steam generated during the drying process of the electrode sheet to be dried; The structure detection component is electrically connected to the controller; the structure detection component is used to detect the internal structure data of the electrode to be dried and transmit it to the controller; the controller can adjust the output power of the light source module and / or adjust the drainage control parameters of the dehumidification mechanism based on the internal structure data; The internal structure data is used to characterize the internal structural integrity of the electrode to be dried.

2. The electrode drying apparatus according to claim 1, characterized in that, The light source module includes multiple first light source modules, which are arranged sequentially along the transmission direction of the electrode to be dried. The controller can control the output power of each of the plurality of first light source modules respectively, so that the energy density of the emitted light beams output by the plurality of first light source modules gradually decreases along the transmission direction.

3. The electrode drying apparatus according to claim 1, characterized in that, The light source module includes at least one second light source module; The controller can adjust the output power of the second light source module so that, during the drying process of the electrode to be dried, the energy density of the emitted beam from the second light source module gradually decreases as the drying time increases.

4. The electrode drying apparatus according to claim 1, characterized in that, The dehumidification mechanism includes a rolling assembly that can roll on the electrode to be dried to at least partially squeeze out the solvent inside the electrode.

5. The electrode drying apparatus according to claim 1, characterized in that, The dehumidification mechanism includes an air knife assembly with its air outlet facing the covered area. The air knife assembly is used to blow out at least part of the solvent inside the electrode to be dried.

6. The electrode drying apparatus according to any one of claims 1-5, characterized in that, At least a portion of the emitted light beam from the light source module is in a preset wavelength band, and the emitted light beam in the preset wavelength band can penetrate the electrode to be dried.

7. The electrode drying apparatus according to claim 6, characterized in that, The preset wavelength range is 200nm-5000mm.

8. The electrode drying apparatus according to any one of claims 1-5, characterized in that, The electrode drying device further includes a first temperature and humidity detection component and a visualization component, wherein the first temperature and humidity detection component and the visualization component are electrically connected. The first temperature and humidity detection component is used to detect the drying temperature and / or humidity of multiple areas of the electrode to be dried, and transmit the data to the visualization component for display.

9. The electrode drying apparatus according to claim 8, characterized in that, The first temperature and humidity detection component is electrically connected to the controller; Based on the current drying temperature and / or humidity of multiple regions of the electrode to be dried, and the target drying conditions, the controller can adjust the output power of the light source module until the current drying temperature and / or humidity of the electrode to be dried meets the target drying conditions.

10. The electrode drying apparatus according to any one of claims 1-5, characterized in that, The electrode drying device further includes a second temperature and humidity detection component, which is electrically connected to the controller. The second temperature and humidity detection component is used to detect the air temperature and / or humidity in the electrode drying space and transmit the data to the controller; Based on the air temperature and / or humidity of the electrode drying space, and the target temperature and humidity, the controller can adjust the airflow regulation parameters of the dehumidification mechanism.

11. The electrode drying apparatus according to any one of claims 1-5, characterized in that, The electrode to be dried has an electrode surface, and the electrode drying device satisfies at least one of the following characteristics: The angle between the optical axis of the emitted light beam irradiating the electrode to be dried and the surface of the electrode is greater than 30°; The angle between the airflow direction of the dehumidification mechanism blowing onto the electrode to be dried and the surface of the electrode is less than 60°. The vector angle between the airflow direction of the dehumidification mechanism blowing onto the electrode to be dried and the transmission direction of the electrode to be dried is 45-135°.

12. The electrode drying apparatus according to any one of claims 1-5, characterized in that, The light source module's emission source includes one or more of the following: light-emitting diodes, infrared lamps, microwaves, lasers, and vertical cavity surface-emitting lasers.

13. A method for drying electrode sheets, applied to the electrode drying apparatus as described in any one of claims 1 to 12, characterized in that, include: In response to a drying trigger event of the electrode to be dried, the transmission mechanism is controlled to move the electrode to be dried so that the electrode to be dried enters the coverage area of ​​the emitted light beam; The drying device also includes a dehumidification mechanism for at least partially discharging the solvent from the electrode to be dried before it enters the covered area. The output power of the light source module is controlled so that, during the drying process of the electrode to be dried, the energy density of the emitted light beam received by the electrode to be dried gradually decreases as the drying time increases; the drying device also includes a light homogenizing component, which is disposed in the emitted light path of the light source module. The light homogenizing component is used to receive the emitted light beam, homogenize the emitted light beam, and project the homogenized emitted light beam onto the coverage area; the reflectivity of the light homogenizing component is greater than or equal to 90%. During the drying process, the dehumidification mechanism is controlled to discharge the steam generated during the drying process of the electrode sheet to be dried.

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