Temperature control device and method for battery slurry and storage medium

Abstract

The invention discloses a temperature control device and method for battery slurry and a storage medium. The temperature control device for the battery slurry comprises a slurry caching unit, a temperature control unit and a temperature control unit, and the temperature control unit is connected with the surface of the slurry caching unit and is used for detecting and adjusting the temperature of the battery slurry in the slurry caching unit. According to the embodiment of the invention, the temperature of the battery slurry in the battery production process can be accurately controlled, and the technical problem that the battery production quality is further influenced due to poor temperature control consistency of the battery slurry in the battery production process is solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a temperature control device, method and storage medium for battery slurry. Background Art

[0002] In the production process of batteries, battery slurry is a key material in the battery production process. It is usually mixed with active materials, binders and conductive agents. The battery slurry is coated on copper or aluminum current collectors to form a dry electrode particle coating. The battery slurry is usually made in the stirring process and transported to the coating process after the stirring process to coat the current collector. During the transportation to the coating process, the battery slurry needs to pass through multiple pipelines and transfer devices and other equipment. After passing through these devices, the temperature of the battery slurry usually changes, which will directly affect the weight of the battery slurry coating and the quality of the electrode assembly.

[0003] In the related art, the temperature of the battery slurry is controlled only during the stirring process, and is easily affected by the ambient temperature of the workshop. This will result in poor consistency in the temperature control of the battery slurry during the battery production process. Therefore, how to effectively ensure the consistency of the slurry temperature has become an urgent problem to be solved.

[0004] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Summary of the invention

[0005] In view of the above problems, the present application provides a battery slurry temperature control device, method and storage medium, which can solve the technical problem in the related art that the temperature control consistency of the battery slurry during the battery production process is poor, further affecting the battery production quality.

[0006] In a first aspect, the present application provides a temperature control device for battery slurry, comprising: a slurry cache unit for caching battery slurry; a temperature control unit connected to the surface of the slurry cache unit, for detecting and adjusting the temperature of the battery slurry in the slurry cache unit.

[0007] In the technical solution of the embodiment of the present invention, by setting a temperature control unit connected to the surface of the slurry buffer unit, the temperature of the battery slurry flowing to the coating process can be monitored in real time and automatically adjusted, so that the consistency and stability of the slurry temperature can be maintained, and the efficiency and consistency of battery production can be further improved. The weight of the battery slurry coating and the quality of the electrode assembly caused by excessively high or low temperature can be reduced; the performance degradation of the battery slurry can be greatly reduced, and the production quality control level of the battery assembly is improved, with small limitations and high universality.

[0008] In some embodiments, the temperature control unit includes a heat exchange module and a temperature detection module electrically connected to the heat exchange module; the heat exchange module is arranged on the surface of the slurry cache unit, and the temperature detection module is arranged inside the slurry cache unit, for detecting the temperature of the battery slurry in the slurry cache unit; the heat exchange module is used to adjust the temperature of the battery slurry in the slurry cache unit based on the temperature value detected by the temperature detection module.

[0009] In the embodiment of the present application, the heat exchange module and the temperature detection module are set to work together, the temperature detection module transmits the detected temperature data to the heat exchange module, and the heat exchange module adjusts its working state according to the received temperature data to maintain the temperature of the battery slurry within a preset range. This can not only improve the accuracy of the temperature control of the battery slurry, but also optimize the processing performance of the battery slurry, improve the consistency and reliability of battery production, and further improve the efficiency and quality of battery production.

[0010] In some embodiments, the temperature control unit further comprises a temperature feedback controller, and the temperature feedback controller is electrically connected to the temperature detection module and the heat exchange module respectively;

[0011] The temperature feedback controller is used to adjust the power of the heat exchange module according to the difference between the current temperature value of the battery slurry and the preset temperature value.

[0012] In the embodiment of the present application, the power of the heat exchange module is adjusted by the temperature feedback controller according to the difference between the current temperature value and the preset temperature value. If the current temperature is lower than the preset value, the temperature feedback controller will increase the power of the heat exchange module to heat the slurry; if the current temperature is higher than the preset value, the temperature feedback controller will reduce the heat exchange module or switch the heat exchange module to the cooling mode to reduce the temperature of the slurry. In this way, it is possible to dynamically respond to the temperature changes of the battery slurry, reduce temperature fluctuations, improve the stability of the battery slurry processing process, and ensure that the temperature of the battery slurry is always kept within the optimal generation range.

[0013] In some embodiments, the heat exchange module includes a heat exchange component and a container for storing a heat exchange medium; the container covers at least a portion of the surface of the slurry cache unit; the heat exchange component is connected to the temperature feedback controller, and the heat exchange component covers at least a portion of the surface of the container; the heat exchange component is used to adjust the temperature of the battery slurry in the slurry cache unit according to the heat exchange power value sent by the temperature feedback controller.

[0014] In the embodiments of the present application, by optimizing the design of the heat exchange components and containers, the heat exchange efficiency can be improved so that the battery slurry can reach the preset temperature more quickly. The heat exchange module can accurately control the heat exchange power according to different temperature control requirements, thereby reducing the phenomenon of overheating or overcooling of the battery slurry during the battery production process, reducing energy consumption while protecting the safety of the battery slurry and equipment.

[0015] In some embodiments, the heat exchange component includes a heating component and / or a cooling component connected to the temperature feedback controller;

[0016] The temperature feedback controller is used to adjust the power of the heat exchange component according to the difference between the current temperature of the battery slurry and the preset temperature.

[0017] In an embodiment of the present application, the power of the heating component and / or the cooling component is adjusted according to the difference between the current temperature value and the preset temperature value by a temperature feedback controller. If the current temperature is lower than the preset temperature, the controller will increase the power of the heating component to quickly heat up; if the current temperature is higher than the preset temperature, the controller will start the cooling component and adjust its power to quickly cool down. If the current temperature is close to or equal to the preset temperature, the controller may reduce or maintain the power of the heat exchange component to keep the temperature stable. In this way, it can dynamically respond to changes in the temperature of the battery slurry, help keep the temperature of the battery slurry within a safe range, reduce safety risks caused by temperature fluctuations, and improve the stability of the battery production process.

[0018] In some embodiments, the temperature control unit further includes a heat-insulating layer, the heat-insulating layer covers at least a portion of the surface of the container, and the heat exchange component is disposed between the heat-insulating layer and the container.

[0019] In the embodiment of the present application, the heat exchange inside and outside the container can be reduced by providing an insulation layer, thereby reducing the energy loss caused by heat conduction. By reducing the impact of external temperature fluctuations on the internal battery slurry, it helps to maintain the consistency of the temperature of the battery slurry. Due to the reduction of heat loss, the system can achieve the same temperature control effect at a lower heat exchange power and reduce energy consumption.

[0020] In a second aspect, the present application provides a temperature control method based on the temperature control device in the above embodiment, the method comprising:

[0021] Obtaining a current temperature value of the battery slurry in the slurry cache unit;

[0022] The temperature of the battery slurry is adjusted according to a preset temperature value and the current temperature value.

[0023] In the embodiment of the present application, the temperature of the battery slurry is adjusted according to the difference between the current temperature value and the preset temperature value. In this way, the temperature change of the battery slurry can be dynamically responded to, the temperature fluctuation can be reduced, the stability of the battery slurry processing process can be improved, and the temperature of the battery slurry can be ensured to always remain within the optimal generation range.

[0024] In some embodiments, the step of obtaining a current temperature value of the battery slurry in the slurry cache unit; and adjusting the temperature of the battery slurry according to a preset temperature value and the current temperature value includes:

[0025] Receiving the current temperature value of the battery slurry fed back by the temperature detection module in the temperature control unit;

[0026] When the current temperature value is less than or equal to the preset temperature value, the heat exchange module of the temperature control unit is controlled to heat the battery slurry; and when the current temperature is greater than the preset temperature value, the heat exchange module is controlled to cool the battery slurry.

[0027] In the embodiment of the present application, the power of the heat exchange module is adjusted by a temperature feedback controller according to the difference between the current temperature value and the preset temperature value. If the current temperature is lower than the preset value, the controller will increase the power of the heat exchange module to heat the slurry; if the current temperature is higher than the preset value, the controller will reduce the power or switch to cooling mode to reduce the temperature of the slurry. In this way, it is possible to dynamically respond to the temperature changes of the battery slurry, reduce temperature fluctuations, improve the stability of the battery slurry processing process, and ensure that the temperature of the battery slurry is always kept within the optimal generation range.

[0028] In some embodiments, adjusting the temperature of the battery slurry according to the preset temperature value and the current temperature value includes:

[0029] Determining a power adjustment value of a heat exchange module of the temperature control unit according to a difference between a current temperature of the battery slurry and a preset temperature;

[0030] The heat exchange power for exchanging heat for the battery slurry is determined according to the power adjustment value to adjust the temperature of the battery slurry.

[0031] In an embodiment of the present application, the power of the heat exchange module is adjusted by the difference between the current temperature value and the preset temperature value. If the current temperature is lower than the preset temperature, the controller will increase the power of the heating component in the heat exchange module to quickly heat up; if the current temperature is higher than the preset temperature, the controller will start the cooling component in the heat exchange module and adjust its power to quickly cool down. If the current temperature is close to or equal to the preset temperature, the controller may reduce or maintain the power of the heat exchange component to keep the temperature stable. In this way, it can dynamically respond to changes in the temperature of the battery slurry, help keep the temperature of the battery slurry within a safe range, reduce safety risks caused by temperature fluctuations, and improve the stability of the battery production process.

[0032] In some embodiments, determining the power adjustment value of the heat exchange module of the temperature control unit according to the difference between the current temperature of the battery slurry and the preset temperature includes:

[0033] determining a difference between a current temperature and a preset temperature of the battery slurry;

[0034] Calculate the sum of the proportional adjustment value, the integral adjustment value and the differential adjustment value of the power adjustment of the heat exchange module according to the proportional adjustment coefficient, the integral adjustment coefficient, the differential adjustment coefficient and the difference;

[0035] The sum is determined as the power adjustment value.

[0036] In the technical solution of the embodiment of the present invention, the power of the heat exchange module determined by the above-mentioned control algorithm can accurately and quickly respond to the temperature changes of the battery slurry and reduce temperature fluctuations, thereby improving the accuracy of temperature control, reducing energy consumption, and further improving the processing performance of the battery slurry and the product quality of the battery, with small limitations and high universality.

[0037] In a third aspect, an embodiment of the present application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the temperature control method of the battery slurry as described in the second aspect is implemented.

[0038] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the temperature control method of the battery slurry as described in the second aspect is implemented.

[0039] In a fifth aspect, an embodiment of the present application further provides a computer program product, including a computer program, characterized in that the computer program is executed by a processor to implement the temperature control method of the battery slurry as described in the second aspect.

[0040] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0042] Figure 1 It is a structural schematic diagram of a temperature control device for battery slurry in the related art;

[0043] Figure 2 A schematic diagram of the structure of a battery slurry temperature control device provided in an embodiment of the present application;

[0044] Figure 3 A schematic structural diagram of another battery slurry temperature control device provided in an embodiment of the present application;

[0045] Figure 4 A schematic structural diagram of another battery slurry temperature control device provided in an embodiment of the present application;

[0046] Figure 5 A schematic structural diagram of another battery slurry temperature control device provided in an embodiment of the present application;

[0047] Figure 6 A schematic diagram of another battery slurry temperature control device provided in an embodiment of the present application

[0048] Figure 7 It is a schematic flow chart of a method for controlling the temperature of a battery slurry provided in an embodiment of the present application;

[0049] Figure 8 It is a schematic flow chart of another method for controlling the temperature of battery slurry provided in an embodiment of the present application;

[0050] Fig. 9 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0053] In the description of the embodiments of the present invention, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0054] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] In the description of the embodiments of the present invention, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0056] In the description of the embodiments of the present invention, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0057] At present, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. In the fields of electric transportation supply, military equipment, aerospace and so on, batteries are usually used to provide power.

[0058] Among various types of power batteries, lithium batteries are widely used in new energy vehicles, consumer electronics, energy storage systems and other fields due to their advantages such as high power density, high energy density, long cycle life, high output voltage, and green environmental protection. As the core component of new energy vehicles, the performance of the power battery system directly affects the performance of the entire vehicle. How to ensure the quality of lithium batteries and reduce potential safety risks or quality problems in batteries is a hot topic in current research.

[0059] In the production process of batteries, battery slurry is a key material in the battery production process. It is usually mixed with active substances, binders and conductive agents. The battery slurry is coated on copper or aluminum current collectors to form a dry electrode particle coating. The battery slurry is usually made in the stirring process; Figure 1 As shown, after the stirring process is completed, the battery slurry is transported from the buffer tank to the coating process by the coating device 20 for coating the current collector. During the transportation to the coating process, the battery slurry needs to pass through multiple pipelines and transfer devices and other equipment. After passing through these equipment, the temperature of the battery slurry usually changes, which directly affects the weight of the battery slurry coating and the quality of the electrode assembly.

[0060] Through in-depth analysis of the above-mentioned related technologies, it was found that the temperature of the battery slurry is only controlled during the stirring process, and the battery slurry is easily affected by the ambient temperature of the workshop, which will lead to poor consistency in the temperature control of the battery slurry during the battery production process.

[0061] Based on the above problems existing in the related art, some embodiments of the present application propose a battery slurry temperature control device, method and storage medium. The battery slurry temperature control device includes: a slurry cache unit for caching battery slurry; a temperature control unit connected to the surface of the slurry cache unit for detecting and adjusting the temperature of the battery slurry in the slurry cache unit.

[0062] Compared with the prior art method of controlling the temperature of the battery slurry only in the stirring process, the embodiment of the present invention can monitor and automatically adjust the temperature of the battery slurry flowing to the coating process in real time by setting a temperature control unit connected to the surface of the slurry buffer unit, thereby maintaining the consistency and stability of the slurry temperature, and further improving the quality and consistency of battery production. Reduce the weight of the battery slurry coating and the quality of the electrode assembly caused by excessively high or low temperature; can greatly reduce the performance degradation of the battery slurry, improve the production quality control level of the battery assembly, and have small limitations and high universality.

[0063] The temperature control device for battery slurry of the present application is described in detail below through specific embodiments. Figure 2The structural diagram of the temperature control device of the battery slurry shown in the figure, the temperature control device 10 of the battery slurry includes a slurry cache unit 12, which is used to cache the battery slurry; the temperature control device 10 also includes a temperature control unit 11, which is used to detect and adjust the temperature of the battery slurry in the slurry cache unit 12; the temperature control unit 11 is arranged on the surface of the slurry cache unit 12.

[0064] In the embodiment of the present application, the slurry buffer unit 12 may be a closed tank structure or an open container structure. The slurry buffer unit 12 may be disposed between the slurry transfer device and the battery coating device, and the slurry buffer unit 12 stores the battery slurry output from the slurry transfer device; the slurry transfer device is used to receive the battery slurry output from the slurry stirring device and adjust the battery slurry flow to the battery coating device.

[0065] It should be noted that, taking the slurry buffer unit 12 as a closed tank structure as an example, in one example, the temperature control unit 11 can be set on the inner surface of the tank of the slurry buffer unit 12, for example, based on the temperature sensor built into the temperature control unit 11 to detect the real-time temperature of the battery slurry in the slurry buffer unit, the temperature of the battery slurry is adjusted by the temperature control device in the temperature control unit 11. In another example, the temperature control device can also be set on the outer surface of the slurry buffer unit 12, so as to wrap the slurry buffer unit 12. The temperature sensor is set on the inner surface of the slurry buffer unit 12, and the temperature sensor sends a temperature signal for adjusting the battery slurry to the temperature control device by wired or wireless communication.

[0066] In the technical solution of the embodiment of the present invention, by setting a temperature control unit 11 connected to the surface of the slurry buffer unit 12, the temperature of the battery slurry flowing to the coating process can be monitored in real time and automatically adjusted, so that the consistency and stability of the battery slurry temperature can be maintained, and the quality and consistency of battery production can be further improved. The weight of the battery slurry coating and the quality of the electrode assembly caused by excessively high or low temperature can be reduced; the performance degradation of the battery slurry can be greatly reduced, and the production quality control level of the battery assembly is improved, with small limitations and high universality.

[0067] In one or more embodiments of the present application, Figure 3 As shown, in the above-mentioned battery slurry temperature control device 10, the temperature control unit 11 includes a heat exchange module 112, and a temperature detection module 114 electrically connected to the heat exchange module 112;

[0068] The heat exchange module 112 is disposed on the surface of the slurry buffer unit 12, and the temperature detection module is disposed inside the slurry buffer unit 12 to detect the temperature of the battery slurry in the slurry buffer unit 12;

[0069] The heat exchange module 112 is used to adjust the temperature of the battery slurry in the slurry buffer unit 12 based on the temperature value detected by the temperature detection module 114 .

[0070] In the embodiment of the present application, the temperature detection module 114 may be a temperature sensor, and the temperature detection module 114 may be connected to the heat exchange module 112 by wire or wirelessly. The heat exchange module 112 may, for example, use a heat exchange medium to heat or cool the battery slurry in the slurry buffer unit 12. The temperature of the battery slurry in the slurry buffer unit 12 is monitored in real time by the temperature detection module 114, and the temperature of the slurry is adjusted by the heat exchange module 112 according to the detected temperature value, so that the temperature of the battery slurry can be accurately controlled.

[0071] In the embodiment of the present application, the heat exchange module 112 and the temperature detection module 114 are arranged to work together, the temperature detection module 114 transmits the detected temperature data to the heat exchange module 112, and the heat exchange module 112 adjusts its working state according to the received temperature data to maintain the temperature of the battery slurry within a preset range. This can not only improve the accuracy of the temperature control of the battery slurry, but also optimize the processing performance of the battery slurry, improve the consistency and reliability of battery production, and further improve the efficiency and quality of battery production.

[0072] In one or more embodiments of the present application, Figure 4 As shown, in the above-mentioned battery slurry temperature control device 10, the temperature control unit 11 further includes a temperature feedback controller 116, and the temperature feedback controller 116 is electrically connected to the temperature detection module 114 and the heat exchange module 112 respectively;

[0073] The temperature feedback controller 116 is used to adjust the power of the heat exchange module 112 according to the difference between the current temperature value of the battery slurry and the preset temperature value.

[0074] In the embodiment of the present application, the temperature feedback controller 116 may be, for example, a PI controller (Proportion Integration, proportional-integral controller) or a PID controller (Proportion Integration Differentiation, proportional-integral-differential controller). Taking the temperature feedback controller 116 as a PID controller as an example, the temperature feedback controller 116 may first determine the difference between the current temperature of the battery slurry and the preset temperature; calculate the sum of the proportional adjustment value, the integral adjustment value and the differential adjustment value of the power adjustment of the heat exchange module 112 according to the proportional adjustment coefficient, the integral adjustment coefficient, the differential adjustment coefficient and the difference; and determine the sum as the power adjustment value of the heat exchange module 112.

[0075] In the embodiment of the present application, the power of the heat exchange module 112 is adjusted by the temperature feedback controller 116 according to the difference between the current temperature value of the battery slurry and the preset temperature value. If the current temperature is lower than the preset value, the controller will increase the power of the heat exchange module 112 to heat the slurry; if the current temperature is higher than the preset value, the heat exchange module 112 will reduce the power or switch the heat exchange module 112 to the cooling mode to reduce the temperature of the slurry. In this way, it is possible to dynamically respond to the temperature changes of the battery slurry, reduce temperature fluctuations, improve the stability of the battery slurry processing process, and ensure that the temperature of the battery slurry in the slurry cache unit 12 is always kept within the optimal temperature range for battery processing.

[0076] In one or more embodiments of the present application, Figure 4 and Figure 5 As shown, in the above-mentioned battery slurry temperature control device 10, the heat exchange module 112 includes a heat exchange component 112a and a container 112b for storing a heat exchange medium; the container 112b covers at least a portion of the surface of the slurry cache unit;

[0077] The heat exchange component 112a is connected to the temperature feedback controller 116, and the heat exchange component 112a covers at least a portion of the surface of the container;

[0078] The heat exchange component 112 a is used to adjust the temperature of the battery slurry in the slurry buffer unit 12 according to the heat exchange power value sent by the temperature feedback controller 116 .

[0079] In the embodiment of the present application, the heat exchange medium may be water or oil, and the heat exchange medium is sealed in the container 112b. In one example, when the slurry buffer unit 12 is a cube, the container 112b may cover the bottom surface and several side surfaces of the slurry buffer unit 12. The heat exchange component 112a covers the bottom surface and several side surfaces of the container 112b.

[0080] In the embodiment of the present application, through the combined design of the above-mentioned heat exchange component 112a and the container 112b, the heat exchange efficiency can be improved, so that the battery slurry can reach the preset temperature more quickly and the heat exchange power can be accurately controlled, which can reduce the phenomenon of overheating or overcooling of the battery slurry during the battery production process, reduce energy consumption and ensure the consistency of the temperature of the battery slurry.

[0081] In one or more embodiments of the present application, in the above-mentioned battery slurry temperature control device 10, the heat exchange component 112a includes a heating component and / or a cooling component connected to the temperature feedback controller 116;

[0082] The temperature feedback controller 116 is used to adjust the power of the heat exchange component 112a according to the difference between the current temperature of the battery slurry and the preset temperature.

[0083] In an embodiment of the present application, the power of the heating component and / or the cooling component is adjusted by the temperature feedback controller 116 according to the difference between the current temperature value of the battery slurry in the slurry buffer unit 12 and the preset temperature value. If the current temperature is lower than the preset temperature, the temperature feedback controller 116 will increase the power of the heating component to quickly heat up the battery slurry; if the current temperature is higher than the preset temperature, the temperature feedback controller 116 will start the cooling component and adjust its power to quickly cool down the battery slurry. If the current temperature is close to or equal to the preset temperature, the temperature feedback controller 116 will reduce or maintain the power of the heat exchange component to keep the temperature stable. In this way, it can dynamically respond to changes in the temperature of the battery slurry, help keep the temperature of the battery slurry within the optimal production temperature range, and improve the production quality of the battery.

[0084] In one or more embodiments of the present application, Figure 6 As shown, the temperature control unit 11 further includes an insulation layer 118, the insulation layer 118 covers at least a portion of the surface of the container 112b, and the heat exchange component 112a is arranged between the insulation layer and the container. The insulation layer 118 in the embodiment of the present application can be an insulation material such as polyurethane foam, glass fiber, rock wool, aerogel, etc.

[0085] In the embodiment of the present application, the heat exchange inside and outside the container 112b can be reduced by providing the insulation layer 118, thereby reducing the energy loss caused by heat conduction. By reducing the impact of external temperature fluctuations on the battery slurry inside the slurry buffer unit 12, it helps to maintain the consistency of the temperature of the battery slurry. Due to the reduction of heat loss, the system can achieve the same temperature control effect at a lower heat exchange power and reduce energy consumption.

[0086] In one or more embodiments of the present application, the present application also provides a method for controlling the temperature of a battery slurry, such as Figure 7 As shown, the temperature control method of the battery slurry comprises the following steps:

[0087] S702, obtaining a current temperature value of the battery slurry in the slurry cache unit;

[0088] S704, adjusting the temperature of the battery slurry according to a preset temperature value and the current temperature value.

[0089] Specifically, in an embodiment of the present application, the execution subject of the method can be a host computer or a programmable logic controller in the temperature control system of the battery slurry. The following is an explanation using a programmable logic controller as an example. In an embodiment of the present application, the temperature of the battery slurry is adjusted by obtaining the current temperature value of the battery slurry in the slurry cache unit in real time and the difference between the preset temperature value. For example, the current temperature value of the battery slurry in the slurry cache unit is 15°C at a moment, and the range of the preset temperature value is [20, 30]°C. According to the difference between the minimum value of the preset temperature value and the current temperature value of 5°C, the temperature of the battery slurry is increased by 5°C to 15°C, so that the battery slurry is within the range of the preset temperature value, ensuring that the temperature of the battery slurry is always maintained within the optimal generation range. In this way, the temperature change of the battery slurry can be dynamically responded to, the temperature fluctuation can be reduced, and the stability of the battery slurry processing process can be improved.

[0090] In one or more embodiments of the present application, the step of obtaining a current temperature value of the battery slurry in the slurry cache unit; and adjusting the temperature of the battery slurry according to a preset temperature value and the current temperature value includes:

[0091] Receiving the current temperature value of the battery slurry fed back by the temperature detection module in the temperature control unit;

[0092] When the current temperature value is less than or equal to the preset temperature value, the heat exchange module of the temperature control unit is controlled to heat the battery slurry; and when the current temperature is greater than the preset temperature value, the heat exchange module is controlled to cool the battery slurry.

[0093] Specifically, in an embodiment of the present application, the temperature detection module in the temperature control unit monitors and feeds back the current temperature value of the battery slurry in real time; the received current temperature value is compared with the preset temperature value to determine the direction and requirements of temperature adjustment. If the current temperature value is less than or equal to the preset temperature value, the heat exchange module of the temperature control unit will heat the battery slurry to increase the temperature of the battery slurry; if the current temperature value is greater than the preset temperature value, the heat exchange module will stop heating, or will cool the battery slurry to lower the temperature of the slurry.

[0094] In the embodiment of the present application, the power of the heat exchange module is adjusted according to the difference between the current temperature value and the preset temperature value. If the current temperature is lower than the preset value, the controller will increase the power of the heat exchange module to heat the slurry; if the current temperature is higher than the preset value, the controller will reduce the power or switch to cooling mode to reduce the temperature of the slurry. In this way, it is possible to dynamically respond to the temperature changes of the battery slurry, reduce temperature fluctuations, improve the stability of the battery slurry processing process, and ensure that the temperature of the battery slurry is always kept within the optimal generation range.

[0095] In one or more embodiments of the present application, adjusting the temperature of the battery slurry according to the preset temperature value and the current temperature value includes:

[0096] Determining a power adjustment value of a heat exchange module of the temperature control unit according to a difference between a current temperature of the battery slurry and a preset temperature;

[0097] The heat exchange power for exchanging heat for the battery slurry is determined according to the power adjustment value to adjust the temperature of the battery slurry.

[0098] In an embodiment of the present application, the power of the heat exchange module is adjusted by the difference between the current temperature value and the preset temperature value. If the current temperature is lower than the preset temperature value, the controller will increase the power of the heating component in the heat exchange module to quickly heat up; if the current temperature is higher than the preset temperature value, the controller will start the cooling component in the heat exchange module and adjust its power to quickly cool down. If the current temperature is close to or equal to the preset temperature value, the controller may reduce or maintain the power of the heat exchange component to keep the temperature stable. In this way, it can dynamically respond to changes in the temperature of the battery slurry, help keep the temperature of the battery slurry within a safe range, reduce safety risks caused by temperature fluctuations, and improve the stability of the battery production process.

[0099] In one or more embodiments of the present application, determining the power adjustment value of the heat exchange module of the temperature control unit according to the difference between the current temperature of the battery slurry and the preset temperature includes:

[0100] determining a difference between a current temperature of the battery slurry and a preset temperature value;

[0101] Calculate the sum of the proportional adjustment value, the integral adjustment value and the differential adjustment value of the power adjustment of the heat exchange module according to the proportional adjustment coefficient, the integral adjustment coefficient, the differential adjustment coefficient and the difference;

[0102] The sum is determined as the power adjustment value.

[0103] Specifically, in the embodiment of the present application, the power adjustment value of the heat exchange module is obtained, including but not limited to, by using a PID (Proportional Integral Derivative) algorithm. Figure 8 As shown, the difference between the current temperature of the battery slurry and the preset temperature is determined; according to the difference supplement coefficient, namely the proportional adjustment coefficient (KP), the integral adjustment coefficient (KI) and the differential adjustment coefficient (KD), and the difference, according to the power adjustment value and the linear relationship between the power adjustment value, the sum PID of the proportional adjustment value, the integral adjustment value and the differential adjustment value of the heat exchange module is calculated, and the PID is determined as the power adjustment value. According to the power adjustment value, the power of the heat exchange module is adjusted to make the temperature value of the battery slurry in the slurry cache unit within the preset temperature range.

[0104] In the technical solution of the embodiment of the present invention, the power of the heat exchange module determined by the above-mentioned control algorithm can accurately and quickly respond to the temperature changes of the battery slurry and reduce temperature fluctuations, thereby improving the accuracy of temperature control, reducing energy consumption, and further improving the processing performance of the battery slurry and the product quality of the battery, with small limitations and high universality.

[0105] Based on the above embodiments, in one or more embodiments of the present application, Figure 6 As shown, the temperature control device of the battery slurry includes: a buffer tank (slurry buffer unit 12), a temperature sensor (temperature detection module 114), a water bath device (container 112b), a PID controller (temperature feedback controller 116) and a heating module (heat exchange module 112a), the buffer tank is used to store the battery slurry, the heating module controls the temperature of the water in the water bath device outside the buffer tank, and the temperature sensor is located in the buffer tank for real-time reading of the temperature of the battery slurry. After the slurry is temperature-controlled in the water bath, it is transported from the pipeline to the coating device 20, and the coating device 20 coats the battery slurry on the battery electrode.

[0106] In addition, in a low temperature environment, the viscosity of the battery slurry will increase, and the slurry will become more viscous. Conversely, in a high temperature environment, the viscosity of the slurry will decrease, and the battery slurry will become thinner. The slurry temperature fluctuation leads to differences in the slurry flow properties, which affects the quality and consistency of the coating weight. The present application uses a method of heating the cache tank in a water bath to make the slurry temperature consistent, thereby reducing the temperature fluctuation of the battery slurry.

[0107] The PID controller determines the difference between the current temperature of the battery slurry and the preset temperature; according to the difference supplement coefficient, namely the proportional adjustment coefficient (KP), the integral adjustment coefficient (KI) and the differential adjustment coefficient (KD), and the difference, according to the power adjustment value and the linear relationship between the power adjustment value, the sum of the proportional adjustment value, the integral adjustment value and the differential adjustment value PID of the heat exchange module is calculated, and the PID is determined as the power adjustment value. According to the power adjustment value, the power of the heating module is adjusted, or the heating module is turned off, so that the temperature value of the battery slurry in the slurry cache unit is within the preset temperature range.

[0108] The technical solution of the embodiment of the present invention increases the consistency of the battery slurry temperature by adding a water bath heating structure to the buffer tank. After the battery slurry enters the buffer tank from the pipeline, it is heated by a water bath in the buffer tank, thereby improving the weight fluctuation problem of the battery slurry during the coating process. The embodiment of the present application can also be used in the operation process of the slurry coating process in the fields of food, chemical industry, medicine, etc., and has little limitation and high universality.

[0109] The embodiment of the present invention further provides a battery slurry temperature control device, which is used to implement the battery slurry temperature control device provided in the above embodiments, and the device includes:

[0110] An acquisition module, used for acquiring a current temperature value of the battery slurry in the slurry cache unit;

[0111] The regulating module is used to regulate the temperature of the battery slurry according to a preset temperature value and the current temperature value.

[0112] In the technical solution of the embodiment of the present invention, by setting a temperature control unit connected to the surface of the slurry buffer unit, the temperature of the battery slurry flowing to the coating process can be monitored in real time and automatically adjusted, so that the consistency and stability of the slurry temperature can be maintained, and the efficiency and consistency of battery production can be further improved. The weight of the battery slurry coating and the quality of the electrode assembly caused by excessively high or low temperature can be reduced; the performance degradation of the battery slurry can be greatly reduced, and the production quality control level of the battery assembly is improved, with small limitations and high universality.

[0113] In one or more embodiments of the present application, the temperature control device of the battery slurry comprises:

[0114] A receiving module, used for receiving the current temperature value of the battery slurry fed back by the temperature detection module in the temperature control unit;

[0115] A control module is used to control the heat exchange module of the temperature control unit to heat the battery slurry when the current temperature value is less than or equal to the preset temperature value; and to control the heat exchange module to cool the battery slurry when the current temperature is greater than the preset temperature value.

[0116] In one or more embodiments of the present application, the adjustment module includes:

[0117] a determination unit, configured to determine a power adjustment value of a heat exchange module of the temperature control unit according to a difference between a current temperature value of the battery slurry and a preset temperature value;

[0118] The regulating unit is used to determine the heat exchange power for the battery slurry according to the power regulation value, so as to regulate the temperature of the battery slurry.

[0119] In one or more implementations of the present application, the determining unit includes:

[0120] A first determination submodule, configured to determine a difference between a current temperature of the battery slurry and a preset temperature;

[0121] A calculation submodule, used for calculating the sum of the proportional adjustment value, the integral adjustment value and the differential adjustment value of the power adjustment of the heat exchange module according to the proportional adjustment coefficient, the integral adjustment coefficient, the differential adjustment coefficient and the difference;

[0122] The second determining submodule is used to determine the sum value as the power adjustment value.

[0123] Fig. 9 The electronic device 900 is a logical structure diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 900 may be an electronic device such as a host computer, a programmable logic controller, a heat exchange controller, or a domain controller that is disposed inside an electric device.

[0124] In an exemplary embodiment, a non-temporary computer-readable storage medium including instructions is also provided, such as a memory including instructions, and the above instructions can be executed by a battery processor to complete the above charging control method, the method comprising: obtaining the current temperature value of the battery slurry in the slurry cache unit; adjusting the temperature of the battery slurry according to a preset temperature value and the current temperature value. Optionally, the above instructions can also be executed by the processor of the battery to complete the other steps involved in the above exemplary embodiment. For example, the non-temporary computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a tape, a floppy disk, an optical data storage device, etc.

[0125] In an exemplary embodiment, an application / computer program product is also provided, including one or more instructions, which can be executed by a processor of a battery to complete the above-mentioned charging control method, the method comprising: obtaining the current temperature value of the battery slurry in the slurry cache unit; adjusting the temperature of the battery slurry according to a preset temperature value and the current temperature value. Optionally, the above-mentioned instructions can also be executed by a processor of the battery to complete other steps involved in the above-mentioned exemplary embodiment. Fig. 9 FIG. 9 is an example diagram of an electronic device 900. A person skilled in the art can understand that Fig. 9 It is only an example of the electronic device 900 and does not constitute a limitation of the electronic device 900. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device 900 may also include input and output devices, network access devices, buses, etc.

[0126] The processor 902 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor 902 may also be any conventional processor, etc. The processor 902 is the control center of the electronic device 900, and uses various interfaces and lines to connect various parts of the entire electronic device 900.

[0127] The memory 901 can be used to store computer-readable instructions. The processor 902 implements various functions of the electronic device 900 by running or executing the computer-readable instructions or modules stored in the memory 901 and calling the data stored in the memory 901. The memory 901 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the electronic device 900, etc. In addition, the memory 901 can include a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM) or other non-volatile / volatile storage devices.

[0128] If the module integrated in the electronic device 900 is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also instruct the relevant hardware to complete the computer-readable instructions through computer-readable instructions. The computer-readable instructions can be stored in a computer-readable storage medium, and when the computer-readable instructions are executed by the processor, the steps of the above-mentioned various method embodiments can be implemented.

[0129] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0130] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0131] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

Claims

1. A temperature control device for battery slurry, characterized in that: include: A slurry cache unit, used for caching battery slurry; A temperature control unit is connected to the surface of the slurry buffer unit and is used to detect and adjust the temperature of the battery slurry in the slurry buffer unit.

2. The device according to claim 1, characterized in that The temperature control unit includes a heat exchange module and a temperature detection module electrically connected to the heat exchange module; The heat exchange module is arranged on the surface of the slurry buffer unit, and the temperature detection module is arranged inside the slurry buffer unit, and is used to detect the temperature of the battery slurry in the slurry buffer unit; The heat exchange module is used to adjust the temperature of the battery slurry in the slurry buffer unit based on the temperature value detected by the temperature detection module.

3. The device according to claim 2, characterized in that The temperature control unit further comprises a temperature feedback controller, and the temperature feedback controller is electrically connected to the temperature detection module and the heat exchange module respectively; The temperature feedback controller is used to adjust the power of the heat exchange module according to the difference between the current temperature value of the battery slurry and the preset temperature value.

4. The device according to claim 3, characterized in that The heat exchange module includes a heat exchange component and a container for storing a heat exchange medium; The container covers at least a portion of the surface of the slurry buffer unit; The heat exchange component is connected to the temperature feedback controller, and the heat exchange component covers at least a portion of the surface of the container; The heat exchange component is used to adjust the temperature of the battery slurry in the slurry buffer unit according to the heat exchange power value sent by the temperature feedback controller.

5. The device according to claim 4, characterized in that The heat exchange component includes a heating component and / or a cooling component connected to the temperature feedback controller; The temperature feedback controller is used to adjust the power of the heat exchange component according to the difference between the current temperature of the battery slurry and the preset temperature.

6. The device according to claim 4 or 5, characterized in that The temperature control unit further comprises a heat-insulating layer, which covers at least a portion of the surface of the container, and the heat exchange component is arranged between the heat-insulating layer and the container.

7. A temperature control method based on the temperature control device according to any one of claims 1 to 6, characterized in that: The method comprises: Obtaining a current temperature value of the battery slurry in the slurry cache unit; The temperature of the battery slurry is adjusted according to a preset temperature value and the current temperature value.

8. The temperature control method according to claim 7, characterized in that: The step of obtaining a current temperature value of the battery slurry in the slurry cache unit; According to a preset temperature value and the current temperature value, adjusting the temperature of the battery slurry includes: Receiving the current temperature value of the battery slurry fed back by the temperature detection module in the temperature control unit; When the current temperature value is less than or equal to the preset temperature value, the heat exchange module of the temperature control unit is controlled to heat the battery slurry; and when the current temperature is greater than the preset temperature value, the heat exchange module is controlled to cool the battery slurry.

9. The temperature control method according to claim 7, characterized in that: The step of adjusting the temperature of the battery slurry according to the preset temperature value and the current temperature value includes: Determining a power adjustment value of a heat exchange module of the temperature control unit according to a difference between a current temperature value of the battery slurry and a preset temperature value; The heat exchange power for exchanging heat for the battery slurry is determined according to the power adjustment value to adjust the temperature of the battery slurry.

10. The temperature control method according to claim 9, characterized in that: The step of determining the power adjustment value of the heat exchange module of the temperature control unit according to the difference between the current temperature of the battery slurry and the preset temperature includes: Determining a difference between a current temperature value and a preset temperature value of the battery slurry; Calculate the sum of the proportional adjustment value, the integral adjustment value and the differential adjustment value of the power adjustment of the heat exchange module according to the proportional adjustment coefficient, the integral adjustment coefficient, the differential adjustment coefficient and the difference; The sum is determined as the power adjustment value.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the method described in any one of claims 7 to 10 is executed when the program is executed.

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