Temperature control system and method, baking machine, control device and storage medium

Abstract

The invention discloses a temperature control system and method, a baking machine, a control device and a storage medium, and relates to the technical field of heating control. The temperature control system comprises a heating plate, a probe assembly and a controller, wherein the heating plate is used for bearing and baking a battery cell; the probe assembly comprises a plurality of temperature probes, and the temperature probes are arranged in the heating plate at intervals so as to obtain the real-time temperature of different areas of the heating plate; the controller is in communication connection with the temperature probes and used for receiving temperature information detected by the temperature probes and controlling the heating plate to enter a heat preservation mode when the temperature information detected by at least one temperature probe is higher than the preset upper limit temperature or the temperature information detected by the temperature probes reaches the preset heating temperature. The device has the advantages that uniform temperature control over different areas of the heating plate is achieved, the phenomenon of local overheating or insufficient heating is avoided, and the battery cell baking quality and the battery safety are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heating control, and particularly relates to a temperature control system, a temperature control method, a baking machine, a control device and a storage medium. BACKGROUND

[0002] In a battery manufacturing process, cell baking is a key link to ensure the quality of the cell, and usually relies on a heating plate to achieve uniform heating and drying of the cell. The traditional heating plate control scheme adopts a single temperature control point as the core control basis. When the temperature control point reaches the preset temperature, the system is triggered to switch to the temperature maintaining mode. However, due to the physical structure characteristics of the heating plate, there is natural inconsistency in the temperature distribution of each region inside the heating plate, forming a significant temperature gradient. In this mode, only one or a few monitoring points are used for upper limit temperature monitoring, which cannot feedback the temperature state of multiple regions in real time. When the temperature control point meets the set value, the system is forced to enter the temperature maintaining stage, causing the temperature of the low-temperature area to stop rising and failing to reach the uniform temperature level required by the process. This control defect causes local overheating or insufficient heating in the cell baking process, which not only reduces the overall heating efficiency, but also may cause incomplete removal of water in the cell or material thermal damage risk, thereby affecting the cycle life and safety of the battery. At the same time, the temperature monitoring mechanism only focuses on over-temperature protection, lacks the ability to cooperatively control the temperature of multiple regions, and is difficult to adapt to the fine baking needs of different specifications of the cell. SUMMARY

[0003] The purpose of the present application is to provide a temperature control system, a temperature control method, a baking machine, a control device and a storage medium, which have the advantages of realizing uniform temperature control of different regions of the heating plate, avoiding local overheating or insufficient heating, and improving the quality of cell baking and the safety of the battery.

[0004] To solve the above problems, on the one hand, the present application provides a temperature control system, and the technical scheme is as follows: The temperature control system comprises: a heating plate for carrying and baking the cell; a probe assembly comprising a plurality of temperature probes, the plurality of temperature probes being arranged at intervals inside the heating plate to obtain real-time temperatures of different regions of the heating plate; a controller in communication connection with each temperature probe, the controller being configured to receive temperature information detected by each temperature probe, and to control the heating plate to enter a temperature maintaining mode when the temperature information detected by at least one temperature probe is higher than a preset upper limit temperature, or when the temperature information detected by each temperature probe reaches a preset heating temperature.

[0005] Further, the present application also provides that the heating plate is an electric heating plate.

[0006] Further, the application further provides that the temperature probe is a temperature sensor.

[0007] Further, the application further provides that the temperature control method applied to the temperature control system comprises: receiving temperature information detected by each temperature probe; when the temperature information detected by at least one temperature probe is higher than the preset upper limit temperature, or the temperature information detected by each temperature probe reaches the preset heating temperature, controlling the heating plate to enter the heat preservation mode.

[0008] Further, the application further provides that before receiving the temperature information detected by each temperature probe, further comprising: controlling the heating plate to enter the heating mode.

[0009] Further, the application further provides that the temperature control system comprises a drying furnace and the heating plate is installed in the drying furnace.

[0010] Further, the application further provides that the baking machine further comprises a feeding mechanism and a discharging mechanism, the feeding mechanism is used for feeding the battery cell to the heating plate, and the discharging mechanism is used for discharging the battery cell from the heating plate.

[0011] Further, the application further provides that the drying furnace is a vacuum drying furnace.

[0012] Further, the application further provides that the control device comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the temperature control method.

[0013] Further, the application further provides that the storage medium is a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer executes the computer program to perform the temperature control method. The temperature control system, the temperature control method, the baking machine, the control device and the storage medium provided by the embodiment of the application have at least the following advantages compared with the prior art: by arranging multiple temperature probes in the heating plate to monitor the temperature of different areas in real time, and intelligently judging the heat preservation mode triggering condition based on the multi-point temperature information, the problem of uneven temperature distribution caused by the traditional single temperature control point is effectively solved, the temperature uniformity control of different areas of the heating plate is realized, the local overheating or heating deficiency phenomenon is avoided, and the advantages of improving the battery cell baking quality and the battery safety are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0015] Figure 1 FIG. 1 is a structural schematic diagram of a heating plate provided in an embodiment of the present application.

[0016] The reference signs in the description are as follows: 100-heating plate, 200-temperature probe. DETAILED DESCRIPTION

[0017] In order to make the technical problems solved by the present application, the technical solutions and beneficial effects more clearly understood, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0018] In the description of the present application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0019] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] In the traditional existing hot plate control mode, the temperature monitoring point is only used to monitor the upper limit of temperature, and the single temperature control point triggers the system to enter the holding mode after reaching the set temperature, which causes the temperature of other areas to be unable to continue to rise, and the uneven temperature distribution of the whole area of the hot plate causes the temperature of part of the area to be insufficient, thereby affecting the heating efficiency and temperature uniformity, which is specifically manifested as the temperature of the non-temperature control area stagnates below the set value, which cannot meet the requirement of the process on the consistency of the temperature of the whole area.

[0021] For example, in the lithium battery cell baking process, the hot plate 100 is used to carry the cells and bake, and a plurality of temperature monitoring points are arranged inside the hot plate 100, but only one temperature control point; when the temperature control point reaches the set temperature, the system is switched to the holding state, at this time the temperature of the edge area may be lower than the set value, and the edge cells are not fully baked due to insufficient temperature, specifically, the moisture in the cells is not completely removed, which affects the structural stability of the cells and the reliability of the subsequent assembly process.

[0022] If the above problems are not solved, the uneven temperature distribution will cause the product defect rate to rise and the process stability to decrease, and in severe cases, it may cause safety hazards due to local underheating or overheating, in which the underheated area causes the material performance to be substandard, and the overheated area may cause the risk of cell thermal runaway, therefore a system capable of accurately controlling the temperature of the whole area must be developed.

[0023] To this end, the present application proposes a temperature control system, please refer to Figure 1 , comprising: a hot plate 100 for carrying and baking cells; a probe assembly comprising a plurality of temperature probes 200, the plurality of temperature probes 200 being arranged at intervals inside the hot plate 100 to obtain the real-time temperature of different areas of the hot plate 100; a controller, the controller being in communication connection with each temperature probe 200, the controller being configured to receive the temperature information detected by each temperature probe 200, and when the temperature information detected by at least one temperature probe 200 is higher than a preset upper limit temperature, or when the temperature information detected by each temperature probe 200 reaches a preset heating temperature, the controller is configured to control the hot plate 100 to enter a holding mode.

[0024] In this embodiment, the hot plate 100 can be realized by a gas heating method, for example, by a burner to provide heat; or a steam heating method, for example, by using a steam pipe to transfer heat. The hot plate 100 is used to carry and bake cells, and its specific structure can be designed according to actual needs.

[0025] The probe assembly comprises a plurality of temperature probes 200, which are arranged at intervals inside the heating plate 100 to obtain real-time temperatures of different regions of the heating plate 100. Specifically, the temperature probes 200 can be implemented by bimetallic thermometers, for example, to indicate the temperature by a mechanical pointer; or implemented by thermal paper patches, for example, to indicate the temperature range by color change.

[0026] Further, the controller is in communication connection with each temperature probe 200, for receiving the temperature information detected by each temperature probe 200, and controlling the heating plate 100 to enter the holding mode according to a preset condition. For example, the controller can be implemented by a programmable logic controller; or implemented by a microcontroller. Thus, by the interval arrangement of the plurality of temperature probes 200, the embodiment realizes real-time monitoring of the temperatures of different regions of the heating plate 100; when the temperature information detected by at least one temperature probe 200 is higher than a preset upper limit temperature, the controller controls the heating plate 100 to enter the holding mode to prevent local overheating; and meanwhile, when the temperature information detected by each temperature probe 200 reaches a preset heating temperature, the controller controls the heating plate 100 to enter the holding mode to ensure that the heating process continues until the global temperature meets the requirement. This design solves the problem that the temperatures of all regions of the heating plate 100 cannot be consistent, resulting in insufficient temperature in some regions.

[0027] The temperature control system comprises a heating plate 100, a probe assembly, and a controller. The heating plate 100 is configured to carry the battery cell and provide the baking function, and its internal space is divided into a plurality of regions to realize accurate monitoring of temperature distribution. The probe assembly is composed of a plurality of temperature probes 200, which are arranged at intervals inside the heating plate 100 to obtain real-time temperature information of different regions, wherein the interval arrangement ensures that the temperature difference can be fully captured, avoiding the defect that the traditional single monitoring point cannot reflect the global temperature state. The controller is in communication connection with each temperature probe 200, and the temperature information is received and processed, and when the temperature detected by at least one temperature probe 200 is higher than a preset upper limit temperature, or the temperatures detected by all temperature probes 200 all reach a preset heating temperature, the heating plate 100 is controlled to enter the holding mode.

[0028] Further, the decision logic dynamically adjusts the heating process through a double judgment mechanism: immediately triggers the holding mode to prevent overheating risk when the local temperature is too high, and terminates the heating only when the global temperature all meets the set requirement, thereby ensuring that the heating process continues until the temperature of all regions meets the requirement.

[0029] For example, in one specific embodiment, the temperature probes 200 are implemented as K-type thermocouples, which are embedded inside the heating plate 100 at a uniform interval of 5 centimeters to cover the key temperature monitoring points. The controller is implemented with a microprocessor, which is preset with an upper limit temperature setting of 105 degrees Celsius and a heating temperature setting of 100 degrees Celsius. The temperature information is transmitted in real time to the controller through wired communication. In this way, the system can make accurate decisions based on multi-point data, avoiding the problem of local overheating or insufficient temperature caused by inconsistent regional temperature.

[0030] Specifically, the technical solution effectively solves the problem of insufficient temperature in some areas caused by inconsistent temperature in all areas of the heating plate 100 through multi-point temperature monitoring and dynamic control mechanism. The heating process is continuously carried out until the temperature of all monitoring areas reaches the preset requirement, rather than relying on the temperature state of a single position, thereby significantly improving the temperature uniformity and heating efficiency, and ensuring the reliability of the battery baking quality.

[0031] In practical applications, in some schemes of the present application, the heating plate 100 is used to carry and bake the battery, however, in this process, since the heating plate 100 may use a non-electric heating method, the temperature distribution is not uniform, which cannot ensure that the temperature of all areas reaches the set value, thereby affecting the consistency of the baking effect.

[0032] To this end, the present application further proposes that in the above-mentioned temperature control system, the heating plate 100 is an electric heating plate 100.

[0033] Among them, the electric heating plate 100 refers to a heating device that directly converts electrical energy into heat energy, which can be implemented by embedded resistance wire heating elements, surface-mounted electric heating films or PTC ceramic heaters, etc. The purpose is to provide more accurate temperature response capability and more uniform heat distribution characteristics, thereby laying the foundation for temperature control.

[0034] Specifically, the scheme of the present application adopts the electric heating plate 100, so that the heating plate 100 can quickly adjust the output power according to the adjustment signal of the controller, combined with the real-time temperature monitoring of the different areas of the heating plate 100 by the multiple temperature probes 200, the controller can dynamically optimize the heat input of each area. When at least one temperature probe 200 detects that the temperature is higher than the preset upper limit temperature or all temperature probes 200 detect that the temperature reaches the preset heating temperature, the heating plate 100 is triggered to enter the heat preservation mode in time, thereby ensuring the balance of temperature distribution and the reliability of control logic.

[0035] As a preferred embodiment, the scheme of the application is implemented as follows: the heating plate 100 is uniformly arranged with resistance wire heating elements inside, which are electrically connected with the controller. The controller adjusts the current intensity of the resistance wire through pulse width modulation mode according to the temperature information fed back by each temperature probe 200, so as to realize continuous and fine regulation of the heating power.

[0036] Through the above scheme, the application can effectively reduce the temperature difference of each region inside the heating plate 100, avoid the problem of uneven baking caused by local overheating or insufficient temperature, and thus improve the stability of the battery baking process and the quality consistency of the final product.

[0037] Specifically, in the above scheme, the temperature probe 200 is used to obtain the real-time temperature of different regions of the heating plate 100. However, in this process, the specific implementation form of the temperature probe 200 is not explicitly specified, which may lead to insufficient temperature detection accuracy or unstable response characteristics, and cannot accurately reflect the subtle temperature difference of each region inside the heating plate 100, thereby causing the controller to make a false judgment when determining whether to enter the holding mode, such as prematurely holding when the temperature of some regions does not reach the set value or not responding in time when the temperature exceeds the standard, ultimately affecting the uniformity of the battery baking and the process reliability.

[0038] To this end, the application further proposes that the temperature probe 200 is a temperature sensor.

[0039] Specifically, the temperature probe 200 refers to a temperature sensing element for measuring temperature, which can be realized by using thermocouples, thermal resistors or thermistors, etc. The purpose is to provide high-precision temperature detection capability to ensure that the subtle temperature changes of each region inside the heating plate 100 can be reliably captured, and avoid measurement errors or signal distortion problems caused by non-standard probes.

[0040] Specifically, the scheme of the application realizes real-time acquisition of temperature information of different regions of the heating plate 100 through the temperature sensor, and the controller judges the temperature state based on these accurate data. When the temperature information detected by at least one temperature probe 200 is higher than the preset upper limit temperature, or the temperature information detected by each temperature probe 200 reaches the preset heating temperature, the controller controls the heating plate 100 to enter the holding mode in time. The high sensitivity and linear output characteristics of the temperature sensor enable the controller to accurately identify the critical state, thereby preventing the risk of local overheating or insufficient temperature, ensuring that the heating plate 100 switches to the holding mode at the right time, and forming a complete temperature control logic closed loop.

[0041] As a preferred embodiment, the scheme of the application is implemented as follows: the temperature sensor can be specifically a K-type thermocouple or a platinum resistance temperature sensor, which is arranged at different positions in the heating plate 100 for real-time monitoring of temperature changes at each position. The K-type thermocouple has a fast response characteristic and is suitable for stable measurement in a high-temperature environment.

[0042] Through the above scheme, the accuracy and reliability of temperature detection are improved, and the controller can correctly identify the holding condition, effectively preventing misjudgment caused by inaccurate temperature detection, thereby ensuring the uniformity of the battery cell baking process and the process reliability.

[0043] In another embodiment, the application provides a temperature control method. The method includes receiving temperature information detected by each temperature probe 200; when the temperature information detected by at least one temperature probe 200 is higher than the preset upper limit temperature, or the temperature information detected by each temperature probe 200 reaches the preset heating temperature, the heating plate 100 enters the holding mode.

[0044] The core innovation of the embodiment is that the multi-point temperature monitoring mechanism is combined with the double judgment conditions, so that the holding is triggered in time to prevent overheating risk when the local temperature exceeds the safety threshold, and the heating process is terminated only when the global temperature meets the process requirements.

[0045] Specifically, receiving the temperature information detected by each temperature probe 200 enables the system to obtain temperature distribution data of different regions of the heating plate 100 in real time, breaking through the limitation of traditional single temperature control point and providing a basis for comprehensive evaluation of temperature state; when the temperature information detected by at least one temperature probe 200 is higher than the preset upper limit temperature, the heating plate 100 enters the holding mode, which reflects the targeted response to the abnormally high temperature area and effectively prevents the safety hazards caused by the continuous rise of local temperature; when the temperature information detected by each temperature probe 200 reaches the preset heating temperature, the heating plate 100 enters the holding mode, which ensures that the temperature of the entire heating plate 100 uniformly meets the process requirements and solves the defect of insufficient temperature in some areas in the traditional method. Through the above technical scheme, the uniformity and heating efficiency of temperature control are significantly improved, and the product defect rate and process stability caused by temperature difference between regions are avoided.

[0046] Specifically, in some embodiments of the application described above, multiple temperature probes 200 are used to monitor the temperature of different areas of the heating plate 100. However, in the implementation process, the temperature control method does not explicitly determine the initial state of the heating plate 100 at the beginning, which may cause the system to be in an unheated state, making it difficult to effectively start the heating process, thereby affecting the real-time and accuracy of temperature monitoring, failing to ensure that all areas reach the preset requirements simultaneously, and thus reducing the heating efficiency and possibly causing inconsistent regional temperatures.

[0047] To this end, the steps of the temperature control method further include: Before receiving the temperature information detected by each temperature probe 200, the heating plate 100 is controlled to enter a heating mode.

[0048] The control of the heating plate 100 to enter the heating mode means that the heating process is started in advance before the temperature monitoring stage. This can be achieved by the controller outputting a start instruction to the heating plate 100, which can be realized by controlling the conduction of the heating circuit through a relay module or a solid-state relay. The purpose is to ensure that the heating plate 100 starts heat energy output in time, avoiding the invalid operation of temperature data collection in an unheated state, and thus providing an effective dynamic basis for subsequent temperature monitoring.

[0049] Specifically, the solution of the present application first controls the heating plate 100 to enter the heating mode, so that the heating plate 100 starts heat energy output and establishes a temperature gradient, and then receives the temperature information detected by each temperature probe 200, and determines whether the conditions for entering the holding mode are met based on this information. This execution sequence ensures that the data collected by the temperature probe 200 is derived from the real heating dynamic process rather than static environmental interference, so that the system can accurately capture the temperature rising trend and provide reliable basis for judging whether all areas have reached the preset heating temperature or whether there is an over-temperature situation, thereby forming a complete temperature control logic chain.

[0050] As a specific embodiment, the temperature control method of the present application is implemented as follows: in the initialization stage, the controller first activates the heating mode, sends a control signal to the driving circuit of the heating plate 100 through the microprocessor unit, so that the heating plate 100 starts working; then, the temperature data of each temperature probe 200 is periodically collected; when it is detected that the temperature of at least one temperature probe 200 is higher than the preset upper limit temperature or the temperature of all temperature probes 200 reaches the preset heating temperature, the controller adjusts the heating plate 100 to the holding mode.

[0051] Through the above scheme, this application ensures that the heating process starts in a timely manner, improves the real-time performance and accuracy of temperature monitoring, effectively avoids the problem of inaccurate monitoring caused by the heating process not being initialized, and improves the overall coordination of temperature control and the consistency of regional temperature.

[0052] In another embodiment, this application also discloses a baking machine, including a drying oven and a temperature control system, with a heating plate 100 installed inside the drying oven. The core innovation of this solution lies in the fact that multiple temperature probes 200 are spaced apart inside the heating plate 100 to obtain temperature information of different areas in real time. The controller makes a comprehensive judgment based on the temperature data fed back by each temperature probe 200. Thus, when the temperature detected by at least one temperature probe 200 is higher than the preset upper limit temperature or the temperature detected by all temperature probes 200 reaches the preset heating temperature, the heating plate 100 is controlled to enter the heat preservation mode, thereby ensuring that the temperature of all areas of the heating plate 100 meets the set requirements.

[0053] Specifically, the traditional heating plate 100 control method relies on a single temperature control point to trigger the heat preservation mode, which causes the temperature in non-temperature control areas to stagnate below the set value, failing to meet the process requirements for consistent temperature across the entire area. In contrast, this application avoids the increase in product defect rate and safety hazards caused by insufficient or overheated local temperatures through multi-area temperature monitoring and dynamic decision-making mechanism, ensuring that the heating process continues until the temperature across the entire area reaches the standard, significantly improving temperature uniformity and heating efficiency.

[0054] In practical applications, some embodiments of this application propose a baking machine including a drying oven and a temperature control system. However, in this process, the feeding and unloading of battery cells rely on manual operation, resulting in low production efficiency, poor operation continuity, and easy introduction of human error, which cannot meet the needs of automated production.

[0055] In this regard, this application further proposes that the baking machine also includes a feeding mechanism and a discharging mechanism, wherein the feeding mechanism is used to feed the battery cells onto the heating plate 100, and the discharging mechanism is used to discharge the battery cells from the heating plate 100.

[0056] The feeding mechanism is a device used to automatically perform the positioning and placement of battery cells. It can be implemented using a robotic arm system or a conveyor belt mechanism. Its purpose is to ensure that the battery cells enter the baking position quickly and accurately, avoiding time delays and positioning deviations in manual operation. The unloading mechanism is a device used to automatically remove the baked battery cells. It can be implemented using a robotic arm system or a conveyor belt mechanism. Its purpose is to release the heating plate 100 in a timely manner for the next batch of processing, preventing the risk of over-baking and accelerating the production cycle.

[0057] Specifically, the solution of this application achieves real-time linkage between the feeding mechanism and the heating plate 100, automatically triggering the battery cell feeding operation when the heating plate 100 is in an idle or ready state; at the same time, the unloading mechanism works in coordination with the completion signal of the temperature control system, automatically executing the battery cell unloading operation when the temperature control system confirms that the temperature information detected by each temperature probe 200 has reached the preset heating temperature, thereby forming a continuous automated production process, effectively improving the efficiency and reliability of the baking process.

[0058] As a specific implementation method, the solution of this application is implemented as follows: the feeding mechanism can be a robotic arm system with a gripper at its end for gripping the battery cells; the unloading mechanism can be a conveyor belt system installed on the outlet side of the drying oven and connected to the outlet of the heating plate 100 for receiving and conveying the baked battery cells.

[0059] Through the above technical solution, this application realizes the automation of battery cell loading and unloading, significantly improves production efficiency, ensures the continuity of operation, and reduces human error, thereby better adapting to the needs of automated production.

[0060] In the baking machine, the presence of gas in the drying oven leads to uneven heat distribution, making it impossible for the temperature control system to accurately monitor and control the temperature of all areas, thus affecting the uniformity of cell baking.

[0061] In this regard, this application further proposes that the drying oven is a vacuum drying oven.

[0062] In practical applications, a vacuum drying furnace is a drying device that can maintain an internal vacuum environment. It can be achieved using vacuum systems such as mechanical pumps, diffusion pumps, or turbomolecular pumps. Its purpose is to remove gas inside the furnace, avoid interference from gas flow on heat distribution, and thus provide a stable environment for temperature monitoring.

[0063] Specifically, the solution in this application effectively eliminates the presence of gas inside the drying oven by setting it to a vacuum environment, thus avoiding uneven heat distribution caused by gas flow. Based on this, the temperature probe 200 can more accurately acquire real-time temperature information of different areas of the heating plate 100. The controller can then more reliably identify whether the temperature of all areas has reached the preset heating temperature or whether any area has exceeded the upper limit temperature, thereby triggering the heat preservation mode at the appropriate time to ensure the stability of the heating process and the accuracy of temperature control.

[0064] As a specific implementation method, the solution of this application is implemented as follows: The vacuum drying oven includes a sealed cavity made of stainless steel, a rotary vane vacuum pump system connected to the cavity, and a pressure sensor for monitoring the vacuum level, wherein the door adopts a rubber sealing ring design to maintain sealing performance.

[0065] Through the above solution, this application effectively solves the problem of temperature fluctuation caused by the presence of gas, and improves the accuracy of temperature control and the consistency of baking quality.

[0066] In another embodiment, this application also discloses a control device, which includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs a temperature control method.

[0067] The core innovation of this embodiment lies in introducing dual-judgment logic as the core of the temperature control method. This allows for real-time monitoring of multi-point temperature distribution while simultaneously preventing localized overheating and ensuring uniform temperature across the entire heating plate 100, achieving a consistent temperature across all areas. Specifically, this dual-judgment logic makes comprehensive decisions based on real-time data from multiple temperature probes 200. When at least one temperature probe 200 detects a temperature exceeding a preset upper limit, or when all temperature probes 200 reach the preset heating temperature, the heating plate 100 is controlled to enter a heat preservation mode. This overcomes the problem of inconsistent regional temperatures caused by traditional single-point temperature control that triggers heat preservation based solely on a single point temperature. Because this control device stores the temperature control logic in memory and dynamically processes multi-point temperature information via a processor, it can accurately respond to the overall temperature status of the heating plate 100, effectively preventing localized underheating or overheating, thereby significantly improving heating efficiency and process reliability.

[0068] To address this, this application proposes a storage medium, which is a computer-readable storage medium storing a computer program thereon. When the computer program is executed by a computer, the computer performs a temperature control method. The core innovation of this embodiment lies in integrating multi-zone temperature monitoring logic into the computer program. This allows the heating plate 100 to enter a heat preservation mode when at least one temperature probe 200 exceeds a preset upper limit or all temperature probes 200 reach a preset heating temperature. This ensures that the temperature of all zones of the heating plate 100 meets the set requirements and improves heating efficiency.

[0069] Specifically, this storage medium serves as the physical carrier of the temperature control logic, ensuring the stable storage and reliable retrieval of the computer program, providing fundamental support for real-time processing of temperature information detected by multiple temperature probes 200. Traditional heating plate 100 control methods rely on only a single temperature control point. Once this point reaches the set temperature, the system switches to a heat preservation mode, preventing other areas from rising further and resulting in uneven temperature distribution across the entire area. In contrast, this application uses a decision algorithm coded in a computer program to comprehensively judge based on multi-point temperature data. The heat preservation mode is triggered only when at least one temperature probe 200 detects a temperature higher than the preset upper limit temperature or when all temperature probes 200 detect temperatures reaching the preset heating temperature. This design effectively avoids monitoring blind spots caused by regional temperature differences, allowing the heating process to continue until all areas reach the target temperature, thus overcoming the shortcomings of traditional methods that rely solely on the temperature of a single location while ignoring the overall temperature distribution.

[0070] Through the above technical solutions, the heating plate 100 can achieve precise temperature control throughout the baking process, ensuring that the battery cell is heated evenly and meets the process requirements, and significantly reducing the product defect rate and safety hazards caused by local underheating or overheating.

[0071] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A temperature control system, characterized in that, include: Heating plate, used to support and bake the battery cells; The probe assembly includes multiple temperature probes, which are spaced apart inside the heating plate to obtain the real-time temperature of different areas of the heating plate. The controller is communicatively connected to each of the temperature probes. The controller is used to receive temperature information detected by each of the temperature probes, and to control the heating plate to enter the heat preservation mode when the temperature information detected by at least one of the temperature probes is higher than the preset upper limit temperature, or when the temperature information detected by each of the temperature probes reaches the preset heating temperature.

2. The temperature control system according to claim 1, characterized in that, The heating plate is an electric heating plate.

3. The temperature control system according to claim 1, characterized in that, The temperature probe is a temperature sensor.

4. A temperature control method, characterized in that, The temperature control method, applied to the temperature control system as described in any one of claims 1 to 3, comprises: Receive temperature information detected by each of the temperature probes; When the temperature detected by at least one of the temperature probes is higher than the preset upper limit temperature, or when the temperature detected by each of the temperature probes reaches the preset heating temperature, the heating plate is controlled to enter the heat preservation mode.

5. The temperature control method according to claim 4, characterized in that, Before receiving the temperature information detected by each of the temperature probes, the method further includes: Control the heating plate to enter the heating mode.

6. A baking machine, characterized in that, It includes a drying oven and a temperature control system as described in any one of claims 1 to 3, wherein the heating plate is installed inside the drying oven.

7. The baking machine according to claim 6, characterized in that, The baking machine also includes a feeding mechanism and a discharging mechanism. The feeding mechanism is used to feed the battery cells onto the heating plate, and the discharging mechanism is used to unload the battery cells from the heating plate.

8. The baking machine according to claim 6, characterized in that, The drying oven is a vacuum drying oven.

9. A control device, characterized in that, The control device includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the temperature control method as described in any one of claims 4 to 5.

10. A storage medium, characterized in that, The storage medium is a computer-readable storage medium that stores a computer program, which, when executed by a computer, is used by the computer to perform the temperature control method as described in any one of claims 4 to 5.

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