Pole piece heating system, method and device and pole piece cold pressing equipment

Abstract

The invention relates to a pole piece heating system, method and device and pole piece cold pressing equipment, an adjustable conductive probe is in contact with a to-be-heated pole piece, and when the to-be-heated pole piece moves in the tape walking direction, the contact time of the same position of the to-be-heated pole piece and a heating surface can be changed by changing the size of the heating surface of the adjustable conductive probe in the tape walking direction, so that the temperature of the to-be-heated pole piece can be adjusted. And further, the heating time of the to-be-heated pole piece is changed. In an actual scene, the target size of the adjustable conductive probe only needs to be determined according to the heating demand parameters, so that the size of the heating surface of the adjustable conductive probe in the tape walking direction is adjusted to be the target size. And finally, a power supply is turned on to apply electric energy to the to-be-heated pole piece, and the to-be-heated pole piece generates Joule heat due to self resistance, so that heating operation is realized. According to the scheme, the electric energy is directly applied to the to-be-heated pole piece, the to-be-heated pole piece is self-heated in a Joule heating mode, the energy transfer efficiency during pole piece heating can be effectively improved, and therefore the phenomenon of energy waste is relieved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a pole piece heating system, method, device and pole piece cold pressing equipment. Background Art

[0002] With the development of new energy technology, secondary batteries represented by lithium batteries have gradually been applied to energy storage systems, electric vehicles, military equipment, aerospace and other fields, bringing great convenience to people's daily production and life. As an important part of the battery, the quality of the pole piece directly affects the overall performance and service life of the battery. In the pole piece production process, cold pressing and heating the pole piece are important means to improve the quality of the pole piece.

[0003] However, in the related art, the pole piece is generally heated by electromagnetic induction or microwaves, and the energy transfer efficiency is low. Summary of the invention

[0004] Based on this, it is necessary to propose a pole piece heating system, method, device and pole piece cold pressing equipment to improve the energy transfer efficiency during pole piece heating, thereby alleviating the phenomenon of energy waste.

[0005] The present application provides a pole piece heating system, comprising a power supply and an adjustable conductive probe, wherein the adjustable conductive probe is connected to the power supply, and the adjustable conductive probe comprises a heating surface in contact with the pole piece to be heated, and the size of the heating surface along the tape running direction of the pole piece to be heated can be adjusted to a target size determined by a heating requirement parameter.

[0006] In the above scheme, the adjustable conductive probe is connected to the power supply, and the adjustable conductive probe is used to contact the heating surface of the electrode to be heated, and the size in the tape-walking direction of the electrode to be heated can be adjusted. In this way, when the adjustable conductive probe contacts the electrode to be heated and the electrode to be heated moves along the tape-walking direction, by changing the size of the heating surface of the adjustable conductive probe in the tape-walking direction, the contact time between the same position of the electrode to be heated and the heating surface can be changed, thereby changing the heating time of the electrode to be heated. In actual scenarios, it is only necessary to determine the target size of the adjustable conductive probe according to the heating requirement parameters, so as to adjust the size of the heating surface of the adjustable conductive probe in the tape-walking direction to the target size. Finally, the power supply is turned on to apply electric energy to the electrode to be heated, and the electrode to be heated generates Joule heat due to its own resistance, thereby realizing the heating operation. This scheme directly applies electric energy to the electrode to be heated, and the electrode to be heated is self-heated in the form of Joule heating, which can effectively improve the energy transfer efficiency when the electrode is heated, thereby alleviating the phenomenon of energy waste.

[0007] In some embodiments, the adjustable conductive probe includes a first adjustable conductive probe and a second adjustable conductive probe, the first adjustable conductive probe is connected to the positive electrode of the power supply, and the second adjustable conductive probe is connected to the negative electrode of the power supply.

[0008] In the above scheme, an adjustable conductive probe is respectively arranged at the positive and negative poles of the power supply, and electric energy is applied to the electrode to be heated through the two adjustable conductive probes, thereby effectively improving the heating efficiency.

[0009] In some embodiments, the pole piece heating system further includes a probe adjustment component and a control component, wherein the probe adjustment component is connected to the adjustable conductive probe, and the control component is connected to the probe adjustment component and the power supply.

[0010] In the above scheme, the pole piece heating system also includes a probe adjustment component and a control component, and the control component drives the probe adjustment component to achieve adjustment of the adjustable conductive probe, which has high adjustment efficiency and convenience.

[0011] In some embodiments, the adjustable conductive probe comprises a foldable conductive probe, and the foldable conductive probe can be folded along the running direction of the electrode to be heated.

[0012] The above scheme configures the adjustable conductive probe in a foldable form, and changes the size of the electrode to be heated in the running direction in a folding manner, thereby reducing the possibility of damage to the adjustable conductive probe due to adjustment and improving the reliability of the adjustable conductive probe.

[0013] In some embodiments, the adjustable conductive probe comprises a flexible conductive probe.

[0014] In the above solution, the adjustable conductive probe is configured as a flexible conductive probe to reduce the friction on the electrode to be heated during the heating process.

[0015] In some embodiments, the power supply comprises a current adjustable power supply.

[0016] The above solution configures the power supply as a current-adjustable type power supply, which makes the pole piece heating system have a wider range of applications and improves the versatility of the pole piece heating system.

[0017] The present application provides a pole piece cold pressing equipment, comprising a cold pressing roller, a passing roller, a winding roller and the above-mentioned pole piece heating system, wherein the cold pressing roller, the passing roller and the winding roller are used to convey the pole piece to be heated, the passing roller is arranged between the cold pressing roller and the winding roller, and the adjustable conductive probe is arranged on the passing roller.

[0018] The above scheme applies the electrode heating system to the cold pressing process of the electrode. By heating the electrode, the pressure of the electrode can be released and water can be removed, thereby improving the quality of the electrode.

[0019] In some embodiments, there are multiple rollers, and the adjustable conductive probe is disposed on one of the rollers close to the cold pressing roller.

[0020] In the above scheme, the adjustable conductive probe is set at a position close to the cold pressing roller, so that the electrode to be heated has sufficient time to complete the heating rebound process, thereby improving the heating effect of the electrode.

[0021] The present application provides a pole piece heating method according to the pole piece heating system, comprising: determining the target size of the adjustable conductive probe according to the heating requirement parameter; adjusting the size of the heating surface of the adjustable conductive probe in the tape running direction to the target size; and controlling the power supply to start running so as to apply electrical energy to the pole piece to be heated through the heating surface.

[0022] The above scheme can adjust the size of the adjustable conductive probe along the tape running direction of the electrode to be heated to the target size according to the actual heating requirement parameters, so as to achieve precise heating temperature control and improve the heating effect of the electrode.

[0023] In some embodiments, determining the target size of the adjustable conductive probe according to the heating requirement parameter includes: determining the target size of the adjustable conductive probe according to a target heating temperature.

[0024] The above scheme uses a constant current power supply to heat the electrode. The heating current remains constant during the heating process. Therefore, there is no need to consider the influence of the heating current when determining the target size, which can effectively reduce the complexity of heating control.

[0025] In some embodiments, determining the target size of the adjustable conductive probe according to the heating requirement parameter includes: determining the target size of the adjustable conductive probe according to a target heating temperature and a target heating current.

[0026] The above scheme uses a current-adjustable power supply to heat the electrode. According to different heating requirement parameters, different target heating currents can be applied to the electrode to be heated, and the target size is determined in combination with the target heating current and the target heating temperature to improve the applicability of the electrode heating system.

[0027] In some embodiments, determining the target size of the adjustable conductive probe based on the target heating temperature and the target heating current includes: calculating the target heating time based on the target heating current and the target heating temperature; and calculating the target size of the adjustable conductive probe based on the target heating time and the tape speed of the electrode to be heated.

[0028] The above scheme first calculates the target heating time required for heating by combining the target heating current and the target heating temperature, and then calculates the target size that matches it by using the target heating time and the tape speed, which has a high target size calculation accuracy.

[0029] In some embodiments, determining the target size of the adjustable conductive probe based on the target heating temperature and the target heating current includes: matching the target size of the adjustable conductive probe based on the target heating current, the target heating temperature, and a correspondence between preset heating temperature, heating current and size.

[0030] The above scheme can establish the corresponding relationship between heating temperature, heating current and size through experiments in advance. In actual scenarios, it is only necessary to combine the target heating current and the target heating temperature and match them in the pre-established corresponding relationship to determine the target size, which has a high target size determination efficiency.

[0031] In some embodiments, the pole piece heating method further includes: determining a target heating temperature according to the type of the pole piece to be heated; and / or determining a target heating current according to the type of the pole piece to be heated.

[0032] The above scheme can match different target heating temperatures and / or target heating currents according to the type of the electrode to be heated, thereby improving the heating accuracy of the electrode.

[0033] The present application provides a pole piece heating device according to the pole piece heating system, comprising: a size analysis module, which determines the target size of the adjustable conductive probe according to the heating requirement parameters; a size adjustment module, which is used to adjust the size of the heating surface of the adjustable conductive probe in the tape walking direction to the target size; and a heating control module, which is used to control the power supply to start running so as to apply electrical energy to the pole piece to be heated through the heating surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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:

[0035] Figure 1 This is a schematic diagram of the structure of the electrode heating system in some embodiments of the present application;

[0036] Figure 2 This is a schematic diagram of the structure of the electrode heating system in some other embodiments of the present application;

[0037] Figure 3This is a schematic diagram of the structure of the electrode heating system in some other embodiments of the present application;

[0038] Figure 4 This is a schematic diagram of the structure of the electrode heating system in some other embodiments of the present application;

[0039] Figure 5 This is a schematic diagram of the structure of the pole piece cold pressing equipment in some embodiments of the present application;

[0040] Figure 6 This is a schematic flow chart of a pole piece heating method in some embodiments of the present application;

[0041] Figure 7 This is a schematic flow chart of a pole piece heating method in some other embodiments of the present application;

[0042] Figure 8 This is a schematic flow chart of a pole piece heating method in some other embodiments of the present application;

[0043] Fig. 9 This is a schematic flow chart of a pole piece heating method in some other embodiments of the present application;

[0044] Fig.10 This is a schematic flow chart of a pole piece heating method in some other embodiments of the present application;

[0045] Fig.11 This is a schematic diagram of the structure of the electrode heating device in some embodiments of the present application;

[0046] Fig.12 This is a schematic diagram of the internal structure of a computer device in some embodiments of the present application.

[0047] Description of reference numerals:

[0048] 10-power supply, 20-adjustable conductive probe, 21-first adjustable conductive probe, 22-second adjustable conductive probe, 41-probe adjustment component, 42 control component, 51-cold pressing roller, 52-passing roller, 53-winding roller. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the present application are 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.

[0050] 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.

[0051] In the description of the embodiments of the present application, 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 application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0052] 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.

[0053] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can 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.

[0054] In the description of the embodiments of the present application, 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).

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. They are not only used in energy storage 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. With the continuous expansion of battery application areas, the market demand is also constantly expanding.

[0058] Battery pole piece is a three-layer composite material formed by coating electrode materials on the upper and lower surfaces of the current collector foil. It includes positive pole piece and negative pole piece, and different active materials are used as electrode materials respectively. As an important component of the battery, the pole piece needs to have good conductivity, mechanical stability and flexibility. The quality of the pole piece directly affects the performance and service life of the battery. At present, the pole piece usually needs to go through processes such as coating, rolling, and slitting. After rolling, before winding, the pole piece often needs to be heated to improve the process characteristics of the pole piece and improve the quality of the pole piece.

[0059] However, currently, the heating of the electrode is usually performed by using an additional heating device to transfer heat to the electrode to complete the heating of the electrode. For example, a microwave generator, an electromagnetic heating device, etc. are used to transfer heat to the electrode. The existing heating methods such as heat transfer and thermal radiation have low energy transfer efficiency, which not only affects the heating speed, but also causes excessive energy waste. In addition, these heating methods can easily cause uneven heating of the electrode.

[0060] Through research, it is found that the electrode material coated on the upper and lower surfaces of the pole piece, as well as the material used as the foil, are all conductive materials with a certain resistance value. When the pole piece is energized, a certain amount of Joule heat will be generated. Therefore, in order to improve the energy transfer efficiency during heating, it is possible to consider directly applying electrical energy to the pole piece and heating the pole piece in the form of Joule heating of the pole piece.

[0061] Based on the above considerations, the present application provides a pole piece heating system, including a power supply and an adjustable conductive probe, the adjustable conductive probe is connected to the power supply, the adjustable conductive probe includes a heating surface in contact with the pole piece to be heated, and the size of the heating surface along the tape running direction of the pole piece to be heated can be adjusted to a target size determined by the heating requirement parameters.

[0062] Through the above scheme, the adjustable conductive probe is in contact with the electrode to be heated, and when the electrode to be heated moves along the tape-feeding direction, by changing the size of the heating surface of the adjustable conductive probe in the tape-feeding direction, the contact time between the same position of the electrode to be heated and the heating surface can be changed, that is, the heating time of the electrode to be heated is changed. In actual scenarios, it is only necessary to determine the target size of the adjustable conductive probe according to the heating requirement parameters, so as to adjust the size of the heating surface of the adjustable conductive probe in the tape-feeding direction to the target size. Finally, the power supply is turned on to apply electrical energy to the electrode to be heated, and the electrode to be heated generates Joule heat due to its own resistance, thereby realizing the heating operation.

[0063] The above scheme directly applies electric energy to the electrode to be heated, so that the electrode to be heated is self-heated in the form of Joule heating, which can effectively improve the energy transfer efficiency when the electrode is heated, thereby alleviating the phenomenon of energy waste.

[0064] The electrode heating system provided in the present application should be used in the process of battery electrode heating requirement parameters, wherein the electrode used for heating can be an uncut electrode, a cut electrode, or a electrode combined with other battery materials. As long as it is a electrode with heating requirement parameters, it can be heated by the electrode heating system of the present application, without specific limitation.

[0065] In order to facilitate understanding of the technical solution of the present application, the following embodiments are explained by applying the electrode heating system before the electrode is cut, specifically in the electrode cold pressing process, before the electrode is cold pressed from the cold pressing roller and enters the winding roller for winding.

[0066] See also Figure 1 The present application provides a pole piece heating system, including a power supply 10 and an adjustable conductive probe 20, wherein the adjustable conductive probe 20 is connected to the power supply 10, and the adjustable conductive probe 20 includes a heating surface in contact with the pole piece to be heated, and the size of the heating surface along the tape running direction of the pole piece to be heated can be adjusted to a target size determined by a heating requirement parameter.

[0067] Specifically, the power source 10 is a device or equipment that can output electric energy. The type is not unique. Different types or models of power sources 10 can be selected according to actual needs, and there is no specific limitation. The heating requirement parameters include the heating operation parameters required during the heating process of the electrode (such as heating current) and / or the parameters required to be achieved after the heating is completed (such as heating temperature).

[0068] The adjustable conductive probe 20 has the ability to conduct electricity, and the size of the heating surface along the tape direction of the electrode to be heated can be adjusted, and is used to contact the electrode to be heated, and transmit the electric energy of the power supply 10 to the electric energy transmission device of the electrode to be heated. Among them, the surface of the adjustable conductive probe 20 that directly contacts the electrode to be heated is defined as the heating surface. The heating surface can be set to different shapes according to actual needs. It can be a regular shape, such as a rectangle, a trapezoid, etc., or an irregular shape, which is not specifically limited.

[0069] The tape running direction of the electrode to be heated refers to the conveying direction of the electrode to be heated on the production line. In actual scenarios, the electrode to be heated is in a tape running state. In order to achieve heating of all positions of the electrode, the adjustable conductive probe 20 needs to be fixedly set. Through the tape running of the electrode to be heated, different positions of the electrode to be heated pass through the adjustable conductive probe 20 in sequence, thereby achieving heating of all positions of the electrode to be heated. Therefore, the size of the heating surface along the tape running direction of the electrode to be heated can be changed, and the equivalent length of the heating surface in the tape running direction can be adjusted to achieve heating time adjustment. Specifically, when other conditions remain unchanged, the larger the above-mentioned equivalent length, the longer the heating time of the same position point of the electrode to be heated will be.

[0070] It should be noted that the number of power supplies 10 and adjustable conductive probes 20 in the pole piece heating system is not unique. In one embodiment, one power supply 10 may be provided, and one or more adjustable conductive probes 20 may be connected to the power supply 10 to form a pole piece heating system. In another embodiment, two or more power supplies 10 may be provided, and each power supply 10 may be connected to one or more adjustable conductive probes 20 to heat the pole piece to be heated, and the specific details are not limited.

[0071] A power source 10 and one or more adjustable conductive probes 20 connected thereto can be regarded as a heating group. Taking a power source 10 and an adjustable conductive probe 20 as an example, the adjustable conductive probe 20 can be connected to the positive pole of the power source 10, and the negative pole of the power source 10 can be connected to the electrode to be heated to form a closed heating loop. If there are multiple adjustable conductive probes 20, the adjustable conductive probes 20 can be connected to the positive pole and the negative pole of the power source 10 to form a closed heating loop. The specific setting can be combined with actual needs.

[0072] It can be understood that in one embodiment, the size of the heating surface along the tape-running direction of the electrode to be heated is specifically the length of the heating surface along the tape-running direction of the electrode to be heated, and accordingly, the target size is the target length. In another embodiment, the size of the heating surface along the tape-running direction of the electrode to be heated can also be a parameter such as the diameter of the heating surface (taking a circular heating surface as an example), which is not specifically limited, as long as the equivalent length of the heating surface in the tape-running direction can be changed by adjusting the size.

[0073] In one embodiment, the adjustable conductive probe 20 may include a fixed conductive part and an adjustable conductive part, the heating surface is at least partially located in the adjustable conductive part, the size of the heating surface along the tape running direction may be changed by adjusting the adjustable conductive part, the fixed conductive part is electrically connected to the adjustable conductive part, and the adjustable conductive part is connected to the power supply 10 through the fixed conductive part. In this way, the influence on the connection between the adjustable conductive probe 20 and the power supply 10 when the adjustable conductive part is adjusted is reduced, and the reliability of the connection of the adjustable conductive probe 20 with the power supply 10 is improved.

[0074] In another embodiment, the adjustable conductive probe 20 may only include the adjustable conductive portion, that is, the entire adjustable conductive probe 20 is configured to be adjustable according to the heating requirement. In this way, the volume of the adjustable conductive probe 20 can be reduced, and the cost of the adjustable conductive probe 20 can be saved.

[0075] It is understandable that the adjustable conductive probe 20 has more than one adjustment method. It can be manually adjusted by the user according to actual needs, or it can be automatically adjusted by a driver such as a motor. There is no specific limitation and it can be selected according to actual needs.

[0076] It should be pointed out that the shape of the adjustable conductive probe 20 is not unique. In one embodiment, the adjustable conductive probe 20 can be configured as a regular hexahedron, a truncated cone or a prism shape, or can be configured as an irregular shape. There is no specific limitation, and it only needs to ensure that there is a heating surface to contact the electrode to be heated.

[0077] Furthermore, in one embodiment, in order to improve the uniformity and heating efficiency of the electrode piece, the width of the heating surface of the adjustable conductive probe 20 can be set to be consistent with the width of the electrode piece to be heated. Figure 2 , define the length of the heating surface along the tape running direction as the length direction of the heating surface, define the direction of the heating surface perpendicular to the length direction as the width direction, and the distance in the width direction is the width W1 of the heating surface. Define the direction perpendicular to the tape running direction in the surface where the electrode to be heated contacts the heating surface as the width direction, and the distance in the width direction is the width W2 of the electrode to be heated. In this way, during the tape running of the electrode to be heated, all position points in the width direction of the electrode to be heated are in contact with the adjustable conductive probe 20, which can greatly improve the heating uniformity and heating efficiency.

[0078] In the above scheme, the adjustable conductive probe 20 is connected to the power supply 10, and the adjustable conductive probe 20 is used to contact the heating surface of the electrode to be heated, and the size in the tape-walking direction of the electrode to be heated can be adjusted. In this way, when the adjustable conductive probe 20 contacts the electrode to be heated and the electrode to be heated moves along the tape-walking direction, by changing the size of the heating surface of the adjustable conductive probe 20 in the tape-walking direction, the contact time between the same position of the electrode to be heated and the heating surface can be changed, thereby changing the heating time of the electrode to be heated. In actual scenarios, it is only necessary to determine the target size of the adjustable conductive probe 20 according to the heating requirement parameters, so as to adjust the size of the heating surface of the adjustable conductive probe 20 in the tape-walking direction to the target size. Finally, the power supply 10 is turned on to apply electric energy to the electrode to be heated, and the electrode to be heated generates Joule heat due to its own resistance, thereby realizing the heating operation. In this scheme, electric energy is directly applied to the electrode to be heated, and the electrode to be heated is self-heated in the form of Joule heating, which can effectively improve the energy transfer efficiency when the electrode is heated, thereby alleviating the phenomenon of energy waste.

[0079] See also Figure 3 In some embodiments, the adjustable conductive probe 20 includes a first adjustable conductive probe 21 and a second adjustable conductive probe 22 , the first adjustable conductive probe 21 is connected to the positive pole of the power supply 10 , and the second adjustable conductive probe 22 is connected to the negative pole of the power supply 10 .

[0080] Specifically, this embodiment is explained by taking a heating group including two adjustable conductive probes 20 as an example. The first adjustable conductive probe 21 and the second adjustable conductive probe 22 are respectively connected to the positive electrode and the negative electrode of the power supply 10. When the first adjustable conductive probe 21 and the second adjustable conductive probe 22 are both in contact with the electrode to be heated, a closed heating loop is formed due to the conductivity of the electrode to be heated.

[0081] To improve heating efficiency, the first adjustable conductive probe 21 and the second adjustable conductive probe 22 can be set on the upper surface and lower surface of the electrode to be heated, wherein the upper surface and lower surface of the electrode to be heated are respectively the two surfaces of the electrode to be heated used to coat the electrode material.

[0082] It can be understood that the types of the first adjustable conductive probe 21 and the second adjustable conductive probe 22 can be the same or different, as long as the first adjustable conductive probe 21 and the second adjustable conductive probe 22 can be adjusted according to actual needs to change the heating time, without specific limitation.

[0083] In the above scheme, an adjustable conductive probe 20 is respectively arranged at the positive and negative poles of the power source 10, and electric energy is applied to the electrode to be heated through the two adjustable conductive probes 20, thereby effectively improving the heating efficiency.

[0084] See also Figure 4In some embodiments, the electrode heating system further includes a probe adjustment component 41 and a control component 42 , wherein the probe adjustment component 41 is connected to the adjustable conductive probe 20 ; and the control component 42 is connected to the probe adjustment component 41 and the power supply 10 .

[0085] Specifically, the probe adjustment component 41 is a device for adjusting the size of the heating surface of the adjustable conductive probe 20. The control component 42 is a device for automatically controlling the heating of the electrode. It can be understood that the control component 42 can be an independently set controller, or a device used for other control functions in the electrode processing process, for example, a controller for the electrode cold pressing process, without specific limitation.

[0086] In actual scenarios, the user can first input the heating requirement parameters to the control component 42, which can be input by remote communication or other means, and then the control component 42 analyzes the heating requirement parameters to determine the target size of the adjustable conductive probe 20 required to meet the heating requirement parameters in the current scenario. After that, the control component 42 analyzes or matches the corresponding relationship between the size and the adjustment signal to obtain the adjustment instruction corresponding to the current target size, and sends the adjustment instruction to the probe adjustment component 41, so that the probe adjustment component 41 drives the adjustable conductive probe 20 to move and adjusts the size of the heating surface of the adjustable conductive probe 20 to the target size. Finally, the control power supply 10 is turned on and operated, and the electric energy can be transmitted to the electrode to be heated to achieve Joule heating of the electrode to be heated.

[0087] It should be noted that the type of probe adjustment component 41 is not unique, and the probe adjustment component 41 used may be different depending on the specific type of the adjustable conductive probe 20. For example, in one embodiment, the probe adjustment component 41 may be a motor driver that drives the adjustable conductive probe 20 to stretch or compress, thereby changing the size of the heating surface.

[0088] In the above scheme, the pole piece heating system also includes a probe adjustment component 41 and a control component 42. The control component 42 drives the probe adjustment component 41 to achieve adjustment of the adjustable conductive probe 20, which has high adjustment efficiency and convenience.

[0089] In some embodiments, the adjustable conductive probe 20 includes a foldable conductive probe, and the foldable conductive probe can be folded along the running direction of the electrode to be heated.

[0090] Specifically, the foldable conductive probe refers to a component that has the ability to conduct electricity and can be folded in the running direction of the electrode to be heated. By folding the foldable conductive probe, the size of the heating surface in the running direction can be reduced, thereby reducing the heating time of the same position point in the electrode to be heated.

[0091] In the above scheme, the adjustable conductive probe 20 is configured in a foldable form, and the size of the electrode to be heated in the running direction is changed in a folding manner, thereby reducing the possibility of damage to the adjustable conductive probe 20 due to adjustment and improving the reliability of the adjustable conductive probe 20.

[0092] It can be understood that in other embodiments, the adjustable conductive probe 20 can also be configured as a retractable conductive probe, which can be extended by a motor to increase the size of the heating surface, and can be retracted by a motor to reduce the size of the heating surface.

[0093] Furthermore, in other embodiments, the adjustable conductive probe 20 may also be configured as a compressible conductive probe, and the probe adjustment component 41 drives the probe to compress or expand to achieve size adjustment of the heating surface, which is not specifically limited.

[0094] In some embodiments, the adjustable conductive probe 20 comprises a flexible conductive probe.

[0095] Specifically, the flexible conductive probe is a conductive probe made of flexible material. In actual scenarios, the adjustable conductive probe 20 needs to directly contact the electrode material coated on the surface of the electrode to be heated, and the electrode to be heated is in a tape-feeding state during the heating process. In order to alleviate the phenomenon that the adjustable conductive probe 20 scratches the electrode to be heated, the adjustable conductive probe 20 needs to be made of flexible material.

[0096] It is understandable that the type of flexible material used in the flexible conductive probe is not limited, and may be carbon fiber, etc., without specific limitation.

[0097] In the above solution, the adjustable conductive probe 20 is configured as a flexible conductive probe to reduce the friction on the electrode to be heated during the heating process.

[0098] In some embodiments, power supply 10 comprises an adjustable current power supply.

[0099] Specifically, a current-adjustable power supply refers to a power supply whose output current can be adjusted according to demand. According to Joule's law, the Joule heat generated by the electrode to be heated is related to the current applied to the electrode to be heated, the current application time, and the heating resistance of the electrode to be heated. The generated Joule heat is different, and the temperature to which the electrode to be heated can be heated will also be different. Therefore, according to different heating temperature requirements, the output current of the current-adjustable power supply can be adjusted in combination with actual scenarios.

[0100] In the above solution, the power supply 10 is configured as a current-adjustable type power supply, so that the pole piece heating system has a wider range of applications and improves the versatility of the pole piece heating system.

[0101] It is understood that in another embodiment, the power supply 10 can also be configured as a constant current power supply, that is, a power supply that outputs a constant current. In this way, when heating different types of electrodes to be heated, there is no need to consider the impact of different heating currents. It is only necessary to configure the adjustable conductive probe 20 with a suitable size for power transmission according to the needs.

[0102] See also Figure 5 The present application provides a pole piece cold pressing device, including a cold pressing roller 51, a passing roller 52, a winding roller 53 and the above-mentioned pole piece heating system, the cold pressing roller 51, the passing roller 52 and the winding roller 53 are used to convey the pole piece to be heated, the passing roller 52 is arranged between the cold pressing roller 51 and the winding roller 53, and the adjustable conductive probe 20 is arranged on the passing roller 52.

[0103] Specifically, the structure and implementation of the electrode heating system are as shown in the above-mentioned embodiments and drawings, and will not be described in detail here. In the electrode cold pressing process, under the drive of the driving device, the electrode to be heated is output after cold pressing by the cold pressing roller 51, and is flattened and processed by at least one roller 52, and finally wound at the winding roller 53. Therefore, the adjustable conductive probe 20 can be set at the roller 52, so that the electrode heating operation is realized after the cold pressing roller 51 is cold pressed and before the winding roller 53 is wound.

[0104] The above scheme applies the electrode heating system to the cold pressing process of the electrode. By heating the electrode, the process characteristics of the electrode are improved. For example, rapid rebound, pressure release and water removal of the electrode can be achieved, thereby improving the quality of the electrode.

[0105] In some embodiments, there are multiple rollers 52 , and the adjustable conductive probe 20 is disposed on a roller 52 close to the cold pressing roller 51 .

[0106] Specifically, in actual scenarios, the electrode after cold pressing needs to be transmitted through multiple rollers 52 in sequence before it can be wound up by the winding roller 53. The roller 52 close to the cold pressing roller 51 refers to the roller 52 that the electrode passes through first after coming out of the cold pressing roller 51.

[0107] In the above solution, the adjustable conductive probe 20 is arranged near the cold pressing roller 51, so that the electrode to be heated has sufficient time to complete the heating rebound process, thereby improving the heating effect of the electrode.

[0108] See also Figure 6 The present application provides a pole piece heating method according to the pole piece heating system, comprising step 602, step 604 and step 606.

[0109] Step 602: determining a target size of the adjustable conductive probe according to the heating requirement parameter.

[0110] Step 604: Adjust the size of the heating surface of the adjustable conductive probe in the tape running direction to a target size.

[0111] Step 606, control the power supply to start running, so as to apply electric energy to the electrode to be heated through the heating surface.

[0112] Specifically, the electrode heating system is as shown in the above-mentioned embodiments and drawings, and will not be described in detail here. The target size refers to the size that the heating surface of the adjustable conductive probe 20 needs to reach when heating. During the electrode heating process, the target size of the adjustable conductive probe 20 can be first determined according to the heating requirement parameters, and then the size is adjusted according to the target size, and the size of the heating surface in the tape running direction is adjusted to the target size. Finally, the power supply 10 is controlled to be turned on to achieve the heating operation.

[0113] It should be noted that the above-mentioned electrode heating method can be performed manually by the user or automatically by a computer program, and the specific implementation is not limited. Taking the automatic implementation by a computer program as an example, the electrode heating system includes a power supply 10, an adjustable conductive probe 20, a probe adjustment component 41 and a control component 42. The control component 42 stores a program related to the electrode heating method. The control component 42 can identify the target size of the adjustable conductive probe 20 according to the heating requirement parameters, and send a suitable adjustment instruction to the probe adjustment component 41 with the target size, so that the probe adjustment component 41 adjusts the size of the heating surface to the target size, and finally turns on the power supply 10 to realize the electrode heating operation.

[0114] The above scheme can adjust the size of the adjustable conductive probe 20 along the tape running direction of the electrode to be heated to the target size according to the actual heating requirement parameters, so as to achieve precise heating temperature control and improve the heating effect of the electrode.

[0115] See also Figure 7 , in some embodiments, step 602 includes step 702.

[0116] Step 702: determining a target size of the adjustable conductive probe according to a target heating temperature.

[0117] Specifically, in the solution of this embodiment, the power supply 10 is a constant current power supply, and the current output by the power supply 10 to the electrode to be heated is fixed, so the factor affecting the temperature of the electrode to be heated is the target size of the adjustable conductive probe 20. By changing the target size, not only the heating time of the electrode to be heated can be changed, but also the heating resistance can be changed to a certain extent due to the change in the contact area between the heating surface and the electrode to be heated.

[0118] Therefore, in actual scenarios, it is only necessary to perform calculations or matching analysis in combination with the target heating temperature to determine the target size of the heating surface of the adjustable conductive probe when the electrode to be heated is heated to the target heating temperature.

[0119] The above scheme uses a constant current power supply to heat the electrode. The heating current remains constant during the heating process. Therefore, there is no need to consider the influence of the heating current when determining the target size, which can effectively reduce the complexity of heating control.

[0120] See also Figure 8 , in some embodiments, step 602 includes step 802.

[0121] Step 802: Determine a target size of the adjustable conductive probe according to a target heating temperature and a target heating current.

[0122] Specifically, unlike the above-mentioned constant current power supply, the current adjustable type power supply is used in this embodiment. Therefore, when performing the target size analysis, not only the target heating temperature but also the target heating current needs to be considered. Specifically, the target heating temperature and the target heating current are combined for calculation or matching analysis to determine the target size of the heating surface of the adjustable conductive probe 20 when the electrode to be heated is heated to the target heating temperature.

[0123] The above scheme uses a current-adjustable power supply to heat the electrode. According to different heating requirement parameters, different target heating currents can be applied to the electrode to be heated, and the target size is determined in combination with the target heating current and the target heating temperature to improve the applicability of the electrode heating system.

[0124] See also Fig. 9 In some embodiments, step 802 includes step 902 and step 904 .

[0125] Step 902: Calculate the target heating time according to the target heating current and the target heating temperature.

[0126] Step 904 , calculating the target size of the adjustable conductive probe according to the target heating time and the tape running speed of the electrode to be heated.

[0127] Specifically, the Joule heat required to reach the target heating temperature is calculated according to the specific heat formula Q=CMT, where Q represents the Joule heat, with the unit being Joule (J), C represents the specific heat of the electrode to be heated, with the unit being Joule per kilogram Celsius (J / (kg·℃)), M represents the mass of the heating area of ​​the electrode to be heated, with the unit being kilogram (Kg), and T represents the temperature change of the electrode to be heated, with the unit being Celsius (℃).

[0128] In actual scenarios, the temperature change can be calculated by combining the current temperature of the electrode to be heated and the target heating temperature. The specific heat capacity can be measured and stored according to experiments. For the same type of electrode to be heated, it is a fixed quantity. The heating area represents the area in the electrode to be heated that contacts the heating surface of the adjustable conductive probe 20. The effect of the size adjustment of the adjustable conductive probe on the heating area can be ignored, or the quality of the heating area can be determined by estimation and stored in the control component 42.

[0129] After this, Joule's law Q=I 2 Rt is calculated to obtain the target heating time, where Q represents Joule heat, I represents the target heating current, R represents the resistance of the heating area, and t represents the target heating time. In actual scenarios, the effect of the size of the heating surface on the resistance can be ignored. When the type of the heating electrode is determined, the heating resistance can be calculated based on the resistance of the heating area per unit area (that is, the resistivity) and the area of ​​the heating area; or the heating resistance can be determined by estimation and stored in the control machine component. After that, the Joule heat, target heating current, and heating resistance are substituted to calculate the target heating time.

[0130] Finally, the target size of the adjustable conductive probe 20 can be obtained by calculation according to t=L / v, wherein t represents the target heating time, v represents the tape speed of the electrode to be heated, and L represents the target size (in this embodiment, it can be specifically understood as the equivalent length of the heating surface along the tape direction).

[0131] The above scheme first calculates the target heating time required for heating by combining the target heating current and the target heating temperature, and then calculates the target size that matches it by using the target heating time and the tape speed, which has a high target size calculation accuracy.

[0132] See also Fig.10 , in some embodiments, step 802 includes step 1002.

[0133] Step 1002, according to the target heating current, the target heating temperature, and the corresponding relationship among the preset heating temperature, the heating current and the size, the target size of the adjustable conductive probe is matched and obtained.

[0134] Specifically, for the same type of electrode to be heated, the corresponding relationship between the heating temperature, heating current and size can be established based on the analysis and calculation according to the experiment, and stored in the control component 42 in the form of a graph, table or database. After that, the control component 42 only needs to substitute the obtained target heating current and target heating temperature into the corresponding relationship for matching, and the target size required at this time can be obtained.

[0135] The above scheme can establish the corresponding relationship between heating temperature, heating current and size through experiments in advance. In actual scenarios, it is only necessary to combine the target heating current and the target heating temperature and match them in the pre-established corresponding relationship to determine the target size, which has a high target size determination efficiency.

[0136] It can be understood that in one embodiment, when the current used is a constant current source, there is no need to consider the impact of the current on the target size. At this time, a corresponding relationship between the heating temperature and the size can be established based on experiments to directly match the target size, without specific limitation.

[0137] It should be noted that the target heating temperature and the target heating current are not determined in a unique manner. In one embodiment, the target heating current and the target heating temperature may be input by a user. In another embodiment, the target heating current and the target heating temperature may also be automatically matched by the control component 42 according to the type of the electrode to be heated.

[0138] Accordingly, in some embodiments, the pole piece heating method further includes: determining a target heating temperature according to the type of the pole piece to be heated.

[0139] And / or, in some embodiments, the pole piece heating method further includes: determining a target heating current according to the type of the pole piece to be heated.

[0140] Specifically, the control component 42 stores the correspondence between the electrode type and the target heating temperature, and / or the correspondence between the electrode type and the target heating current. During the actual heating process, the control component 42 only needs to match the type of electrode to be heated according to the user input or other devices identified by the corresponding relationship to determine the target heating temperature and / or target heating current.

[0141] The above scheme can match different target heating temperatures and / or target heating currents according to the type of the electrode to be heated, thereby improving the heating accuracy of the electrode.

[0142] In order to facilitate understanding of the technical solution of the present application, the present application is explained below in conjunction with more detailed embodiments.

[0143] The adjustable conductive probe 20 includes the same first adjustable conductive probe 21 and second adjustable conductive probe 22. The adjustable conductive part of the first adjustable conductive probe 21 is connected to the positive electrode of the power supply 10 through the fixed conductive part, and the adjustable conductive part of the second adjustable conductive probe 22 is connected to the negative electrode of the power supply 10 through the fixed conductive part. The power supply 10 and the probe adjustment component 41 are respectively connected to the control component 42. The adjustable conductive probe is specifically a foldable conductive probe made of carbon fiber material, which can change the folding amplitude under the drive of the probe adjustment component 41, thereby changing the size of the heating surface in the running direction; the output current of the power supply 10 can be adjusted according to actual needs.

[0144] The adjustable conductive probe 20 is only located at the roller 52 between the cold pressing roller 51 and the winding roller 53, specifically at the roller 52 closest to the cold pressing roller 51. The control component 42 first obtains the type of the electrode to be heated, matches it in the stored corresponding relationship, and obtains the target heating temperature and target heating current required at this time. After that, according to the target heating temperature and target heating current, the target size required for the heating surface at this time is matched in the preset corresponding relationship between heating temperature, heating current and size.

[0145] Finally, the control component 42 outputs an adjustment instruction to the probe adjustment component 41 according to the target size, so as to adjust the size of the heating surface of the adjustable conductive probes of the first adjustable conductive probe 21 and the second adjustable conductive probe 22 to the target size, and controls the power supply 10 to output an electrical signal of the target heating current, thereby realizing the electrode heating operation under the cold pressing process.

[0146] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0147] Based on the same inventive concept, the embodiment of the present application also provides a pole piece heating device for implementing the pole piece heating method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more pole piece heating device embodiments provided below can refer to the limitations of the pole piece heating method above, and will not be repeated here.

[0148] See also Fig.11 The present application provides a pole piece heating device according to the above-mentioned pole piece heating system, including a size analysis module 112 , a size adjustment module 114 and a heating control module 116 .

[0149] The size analysis module 112 is used to determine the target size of the adjustable conductive probe according to the heating requirement parameters; the size adjustment module 114 is used to adjust the size of the heating surface of the adjustable conductive probe in the tape running direction to the target size; the heating control module 116 is used to control the power supply to start running so as to apply electrical energy to the electrode to be heated through the heating surface.

[0150] In some embodiments, the size analysis module 112 is further configured to determine a target size of the adjustable conductive probe according to a target heating temperature.

[0151] In some embodiments, the size analysis module 112 is further configured to determine a target size of the adjustable conductive probe according to a target heating temperature and a target heating current.

[0152] In some embodiments, the size analysis module 112 is also used to calculate the target heating time according to the target heating current and the target heating temperature; and to calculate the target size of the adjustable conductive probe according to the target heating time and the tape speed of the electrode to be heated.

[0153] In some embodiments, the size analysis module 112 is further used to match and obtain the target size of the adjustable conductive probe according to the target heating current, the target heating temperature, and the corresponding relationship among the preset heating temperature, the heating current and the size.

[0154] In some embodiments, the dimension analysis module 112 is further used to determine the target heating temperature according to the type of the electrode to be heated.

[0155] In some embodiments, the size analysis module 112 is further used to determine the target heating current according to the type of the electrode to be heated.

[0156] Each module in the above-mentioned electrode heating device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0157] The above-mentioned pole piece heating device can adjust the size of the heating surface along the tape running direction of the pole piece to be heated to the target size according to the actual heating requirement parameters, so as to achieve precise heating temperature control and improve the pole piece heating effect.

[0158] In some embodiments, the present application provides a computer device, which may be a terminal, and its internal structure diagram may be as follows: Fig.12 As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a pole piece heating method is realized. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0159] Those skilled in the art will understand that Fig.12 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0160] In some embodiments, the present application provides a computer device, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0161] The target size of the adjustable conductive probe is determined according to the heating requirement parameters; the size of the heating surface of the adjustable conductive probe in the tape running direction is adjusted to the target size; and the power supply is controlled to start running so as to apply electric energy to the electrode to be heated through the heating surface.

[0162] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining a target size of the adjustable conductive probe according to a target heating temperature.

[0163] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining a target size of the adjustable conductive probe according to a target heating temperature and a target heating current.

[0164] In one embodiment, when the processor executes the computer program, the following steps are also implemented: according to the target heating current and the target heating temperature, the target heating time is calculated; according to the target heating time and the tape speed of the electrode to be heated, the target size of the adjustable conductive probe is calculated.

[0165] In one embodiment, when the processor executes the computer program, the following steps are also implemented: according to the target heating current, the target heating temperature, and the corresponding relationship among the preset heating temperature, the heating current and the size, the target size of the adjustable conductive probe is matched.

[0166] In one embodiment, when the processor executes the computer program, the following steps are also implemented: determining a target heating temperature according to the type of the electrode to be heated.

[0167] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining a target heating current according to the type of the electrode to be heated.

[0168] In some embodiments, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0169] The target size of the adjustable conductive probe is determined according to the heating requirement parameters; the size of the heating surface of the adjustable conductive probe in the tape running direction is adjusted to the target size; and the power supply is controlled to start running so as to apply electric energy to the electrode to be heated through the heating surface.

[0170] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining a target size of the adjustable conductive probe according to a target heating temperature.

[0171] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining a target size of the adjustable conductive probe according to a target heating temperature and a target heating current.

[0172] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: based on the target heating current and the target heating temperature, the target heating time is calculated; based on the target heating time and the tape speed of the electrode to be heated, the target size of the adjustable conductive probe is calculated.

[0173] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: according to the target heating current, the target heating temperature, and the corresponding relationship among the preset heating temperature, the heating current and the size, the target size of the adjustable conductive probe is matched.

[0174] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining the target heating temperature according to the type of the electrode to be heated.

[0175] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the target heating current according to the type of the electrode to be heated.

[0176] In some embodiments, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the following steps:

[0177] The target size of the adjustable conductive probe is determined according to the heating requirement parameters; the size of the heating surface of the adjustable conductive probe in the tape running direction is adjusted to the target size; and the power supply is controlled to start running so as to apply electric energy to the electrode to be heated through the heating surface.

[0178] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining a target size of the adjustable conductive probe according to a target heating temperature.

[0179] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining a target size of the adjustable conductive probe according to a target heating temperature and a target heating current.

[0180] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: based on the target heating current and the target heating temperature, the target heating time is calculated; based on the target heating time and the tape speed of the electrode to be heated, the target size of the adjustable conductive probe is calculated.

[0181] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: according to the target heating current, the target heating temperature, and the corresponding relationship among the preset heating temperature, the heating current and the size, the target size of the adjustable conductive probe is matched.

[0182] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining the target heating temperature according to the type of the electrode to be heated.

[0183] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the target heating current according to the type of the electrode to be heated.

[0184] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0185] The above-mentioned computer equipment, storage medium and computer program product can adjust the size of the heating surface along the tape direction of the electrode to be heated to the target size according to the actual heating requirement parameters, so as to achieve precise heating temperature control and improve the heating effect of the electrode.

[0186] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A pole piece heating system, characterized in that: include: power supply; An adjustable conductive probe is connected to the power supply, and the adjustable conductive probe includes a heating surface in contact with the electrode to be heated, and the size of the heating surface along the tape running direction of the electrode to be heated can be adjusted to a target size determined by the heating requirement parameters.

2. The pole piece heating system according to claim 1, characterized in that: The adjustable conductive probe includes a first adjustable conductive probe and a second adjustable conductive probe, the first adjustable conductive probe is connected to the positive electrode of the power supply, and the second adjustable conductive probe is connected to the negative electrode of the power supply.

3. The pole piece heating system according to claim 1 or 2, characterized in that: The pole piece heating system further comprises a probe adjustment component and a control component. The probe adjustment component is connected to the adjustable conductive probe, and the control component is connected to the probe adjustment component and the power supply.

4. The pole piece heating system according to claim 1 or 2, characterized in that: The adjustable conductive probe comprises a foldable conductive probe, and the foldable conductive probe can be folded along the running direction of the electrode to be heated.

5. The pole piece heating system according to claim 1 or 2, characterized in that: The adjustable conductive probe comprises a flexible conductive probe.

6. The pole piece heating system according to claim 1 or 2, characterized in that: The power supply includes a current adjustable power supply.

7. A pole piece cold pressing device, characterized in that: It comprises a cold pressing roller, a passing roller, a winding roller and the electrode heating system according to any one of claims 1 to 6, wherein the cold pressing roller, the passing roller and the winding roller are used to convey the electrode to be heated, the passing roller is arranged between the cold pressing roller and the winding roller, and the adjustable conductive probe is arranged on the passing roller.

8. The pole piece cold pressing equipment according to claim 7, characterized in that: There are multiple passing rollers, and the adjustable conductive probe is arranged on one of the passing rollers close to the cold pressing roller.

9. A method for heating a pole piece of a pole piece heating system according to any one of claims 1 to 6, characterized in that: include: determining a target size of the adjustable conductive probe according to a heating demand parameter; Adjusting the size of the heating surface of the adjustable conductive probe in the tape running direction to the target size; The power supply is controlled to start running so as to apply electric energy to the electrode to be heated through the heating surface.

10. The pole piece heating method according to claim 9, characterized in that: Determining the target size of the adjustable conductive probe according to the heating requirement parameter includes: The target size of the adjustable conductive probe is determined according to the target heating temperature.

11. The pole piece heating method according to claim 9, characterized in that: Determining the target size of the adjustable conductive probe according to the heating requirement parameter includes: The target size of the adjustable conductive probe is determined according to the target heating temperature and the target heating current.

12. The pole piece heating method according to claim 11, characterized in that: Determining the target size of the adjustable conductive probe according to the target heating temperature and the target heating current includes: The target heating time is calculated according to the target heating current and the target heating temperature; The target size of the adjustable conductive probe is calculated according to the target heating time and the tape running speed of the electrode to be heated.

13. The pole piece heating method according to claim 11, characterized in that: Determining the target size of the adjustable conductive probe according to the target heating temperature and the target heating current includes: The target size of the adjustable conductive probe is obtained by matching according to the target heating current, the target heating temperature, and the corresponding relationship among the preset heating temperature, heating current and size.

14. The pole piece heating method according to claim 11, characterized in that: The electrode heating method further includes: determining a target heating temperature according to the type of the electrode to be heated; and / or determining a target heating current according to the type of the electrode to be heated.

15. A pole piece heating device of a pole piece heating system according to any one of claims 1 to 6, characterized in that: include: A size analysis module, which determines a target size of the adjustable conductive probe according to a heating requirement parameter; A size adjustment module, used for adjusting the size of the heating surface of the adjustable conductive probe in the tape running direction to the target size; The heating control module is used to control the power supply to start running so as to apply electric energy to the electrode to be heated through the heating surface.

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