Winding electrode assemblies, battery cells, batteries, power consumption devices and winding equipment

Abstract

The present application relates to the field of battery technology, and provides a wound electrode assembly, a battery cell, a battery, a power consumption device and a winding device. The wound electrode assembly includes a plate and a separator attached to the plate and located in the folding region of the plate, the separator losing adhesion with the plate within a preset time. The solution of the present application can improve the performance of the battery.

Description

【Technical Field】 【0001】 This application relates to the field of battery technology, and particularly to a wound electrode assembly, a battery cell, a battery, a power consumption device, and a winding device. 【Background Art】 【0002】 With the development of battery technology, the requirements for all aspects of batteries are increasing. For example, while considering performance parameters such as energy density, cycle life, discharge capacity, charge and discharge rate, it is also necessary to consider the safety of the battery. The precipitation of metal ions in the battery, for example, lithium precipitation, is one of the main factors affecting the electrical performance and safety performance of the battery. When lithium precipitation occurs, it not only reduces the electrical performance of the battery, but as the amount of lithium precipitation accumulates, dendrites are likely to be formed. The dendrites may pierce through the separator and cause a short circuit inside the battery, posing a potential safety risk. 【0003】 Therefore, how to provide a battery assembly to improve the performance of the battery has become a technical problem to be solved. 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 This application provides a wound electrode assembly, a battery cell, a battery, a power consumption device, and a winding device, which can improve the safety performance of the battery. 【Means for Solving the Problems】 【0005】 According to a first aspect, this application provides a wound electrode assembly, which includes a polar plate and a separator that is attached to the polar plate and located in the bending area of the polar plate, and the separator loses its adhesiveness to the polar plate within a preset time. 【0006】 In the embodiments of this application, the wound electrode assembly includes an electrode plate and an isolation material. The isolation material is attached to the electrode plate and located in the folded region of the electrode plate, thereby preventing or reducing ions emitted from the positive electrode plate from passing through the isolation material and embedding in the negative electrode plate, thereby preventing phenomena such as lithium deposition due to insufficient space on the negative electrode plate. The isolation material loses its adhesiveness to the electrode plate within a predetermined time, thus preventing wrinkles in the electrode plate during subsequent processes such as shaping caused by adhesiveness between the isolation material and the electrode plate. Therefore, the technical invention of this application can improve the performance of the battery. 【0007】 In one possible implementation, the bent region of the electrode plate includes a first surface and a second surface that are positioned opposite each other, and the separator is attached to the first surface and / or the second surface of the bent region of the electrode plate. This facilitates the flexible positioning of the separator according to actual needs and is advantageous in balancing the thickness of the electrode assembly with the isolation effect of the separator. 【0008】 In one possible embodiment, the electrode plate includes a positive electrode plate, and the separator is attached to the first and / or second surface of the folded region of the positive electrode plate. In a wound electrode assembly, for positive and negative electrode plates at the same rotational position, the negative electrode plate is closer to the center of the electrode assembly than the positive electrode plate. As a result, in the folded region, the positive electrode plate has a larger area than the negative electrode plate, causing the number of ions released from the positive electrode plate to be greater than the number of empty spaces on the negative electrode plate for accommodating ions. By placing separators on the first and / or second surface of the folded region of the positive electrode plate, ions can be prevented from passing through the separators, thereby avoiding phenomena such as lithium deposition. 【0009】 In one possible implementation, the electrode assembly includes a positive electrode plate with N circumferences, and the separator is placed in the folded region of the positive electrode plate from 1 to 5 circumferences near the center of the electrode assembly, where N ≥ 5. The further the separator is from the center of the electrode assembly, the smaller the area difference between the positive electrode plate and the negative electrode plate in the folded region, making lithium deposition less likely to occur in the folded region of the negative electrode plate. Therefore, by placing the separator in the folded region of the positive electrode plate from 1 to 5 circumferences near the center of the electrode assembly, lithium deposition can be avoided, and the thickness of the electrode assembly can be reduced, thereby reducing the volume of the electrode assembly, which is advantageous for improving the volumetric energy density of the battery. 【0010】 In one possible embodiment, the electrode assembly further includes a separator, which is located between the positive and negative electrode plates and separates them, and the separator is connected to the separator. In other words, the separator is located between the separator and the electrode plates, and ions can move between the positive and negative electrode plates by passing through the separator in areas where the separator is not present, thereby enabling normal operation of the electrode assembly or battery. 【0011】 In one possible implementation, the separator is used to prevent ions emitted from the positive electrode plate from passing through the separator. In this way, phenomena such as lithium deposition in the bent region of the negative electrode plate can be avoided, thereby improving the safety of the battery. 【0012】 In one possible implementation, the isolation object loses its adhesiveness within a predetermined time after being irradiated with light in a predetermined wavelength range. In this way, the isolation object can lose its adhesiveness within a predetermined time by being irradiated with light in a predetermined wavelength range. 【0013】 In one possible implementation, the isolation object comprises a substrate and a delay adhesive applied to the substrate, the delay adhesive being located between the substrate and the electrode plate, and the delay adhesive losing its tackiness within a predetermined time after irradiation with light in a predetermined wavelength range, thereby causing the isolation object to lose its tackiness with the electrode plate within the predetermined time. In this way, the delay adhesive makes it possible to achieve the isolation object losing its tackiness within a predetermined time, and this method is easy to implement. 【0014】 In one possible embodiment, the substrate material is at least one of the following: fibers, polymers, polypropylene, polyethylene, rubber, and nonwoven fabrics. This material is readily available, thereby facilitating the manufacture of the isolation. 【0015】 In one possible implementation, the delayed adhesive is an ultraviolet delayed adhesive or an infrared delayed adhesive. This adhesive is easy to obtain, thereby facilitating the manufacture of the isolation material. 【0016】 In one possible implementation, the thickness of the isolation material is 3 μm to 2 cm. In this way, it is possible to achieve a balance between the performance of the isolation material and the volume of the electrode assembly. 【0017】 According to a second aspect, the present application provides a battery cell comprising a wound electrode assembly in the first aspect and any one of the possible embodiments thereof, and a housing for housing the electrode assembly. 【0018】 According to a third aspect, the present application provides a battery comprising a battery cell according to a second aspect and a housing for housing the battery cell. 【0019】 According to a fourth aspect, the present application provides a power consumption device comprising a battery according to a third aspect, the battery being used to supply power to the power consumption device. 【0020】 According to a fifth aspect, the present application provides a winding machine for manufacturing a wound electrode assembly, the winding machine comprising a first transport shaft for transporting an electrode plate to which an isolation material is attached, and an irradiation device for irradiating the isolation material attached to the electrode plate so that the isolation material loses its tackiness to the electrode plate within a predetermined time. In this way, the irradiation device irradiates the isolation material, causing the isolation material to lose its tackiness to the electrode plate within a predetermined time, thereby avoiding wrinkling of the electrode plate due to tackiness in the subsequent shaping process. 【0021】 In one possible implementation, the irradiation device is installed inside the first transport shaft and is used to irradiate the isolation object as the first transport shaft transports the electrode plate. In this way, the irradiation device is installed inside the first transport shaft, thereby saving space occupied by the irradiation device. 【0022】 In one possible embodiment, the first transport axis includes a first half-axis on which the irradiation device is installed, and a second half-axis connected to the first half-axis, on which a light-transmitting region is installed, the light-transmitting region being positioned corresponding to the irradiation device, and which causes the light from the irradiation device to be emitted through the light-transmitting region. In this way, light emitted from the irradiation device located within the first transport axis can be emitted through the light-transmitting region, thereby ensuring that the isolated object can be irradiated by the irradiation device. 【0023】 In one possible implementation, locking structures are installed on the first and second half-shafts, and the first and second half-shafts are locked together via these locking structures. In this way, not only is the connection between the first and second half-shafts achieved, but the transport of the electrode plates by the first transport shaft is not affected. 【0024】 In one possible implementation, the thickness of the axial wall of the first semi-axis and / or the second semi-axis is 0.5 cm to 18 cm. In this way, both the strength and volume of the first and second semi-axis can be achieved. 【0025】 In one possible implementation, the winding device further includes a control unit and a distance measurement mechanism. The distance measurement mechanism is used to measure a first length, and the first length is the length of the polar plate passing through the first conveying shaft. The control unit is used to control the irradiation device to be turned on or off based on the first length. In this way, it is easy to immediately detect the isolation object and irradiate the isolation object. 【0026】 In one possible implementation, the winding device further includes a color sensing mechanism. The color sensing mechanism is used to sense the color of the isolation object or the polar plate. The control unit is used to control the irradiation device to be turned on or off based on the color sensed by the color sensing mechanism. In this way, the isolation object can be immediately detected and irradiated. 【0027】 In one possible implementation, the control unit, the color sensing mechanism, and the distance measurement mechanism are installed in the irradiation device. In this way, while saving the space occupied by the winding device, it is also possible to facilitate the manufacture of the irradiation device. 【0028】 In one possible implementation, the isolation object is attached to the surface of the positive electrode plate, and the first conveying shaft is used to convey the positive electrode plate. In this way, after winding the positive electrode plate, the separator, and the negative electrode plate to form an electrode assembly, by installing the isolation object, lithium precipitation can be avoided or reduced. 【0029】 In one possible implementation, the separator includes a substrate and a delayed adhesive applied on the substrate. The delayed adhesive is located between the substrate and the electrode plate. After being irradiated by the irradiation device, the delayed adhesive loses its adhesiveness within the preset time, causing the separator to lose its adhesiveness to the electrode plate within the preset time. In this way, by means of the delayed adhesive and the corresponding irradiation device, it can be realized that the separator loses its adhesiveness within the preset time, and this method is easy to implement. 【0030】 In one possible implementation, the irradiation device is an ultraviolet lamp irradiation device or an infrared lamp irradiation device. In this way, it is easy to obtain the irradiation device. 【0031】 In one possible implementation, the diameter of the first transport shaft is 1.5 cm to 20 cm. In this way, it is easy to process the first transport shaft and at the same time, it is easy to transport the electrode plate by the first transport shaft. 【0032】 In one possible implementation, the thickness of the separator is 3 μm to 2 cm. In this way, it is possible to balance the performance of the separator and the volume of the electrode assembly. 【0033】 In the embodiments of the present application, the wound-type electrode assembly includes an electrode plate and a separator. The separator is attached to the electrode plate and located in the bending region of the electrode plate. In this way, it is possible to avoid or reduce the ions released from the positive electrode plate passing through the separator and fitting into the negative electrode plate, thereby avoiding phenomena such as lithium precipitation due to the lack of empty positions in the negative electrode plate. The separator loses its adhesiveness to the electrode plate within the preset time, thus avoiding wrinkles in the electrode plate during subsequent processes such as shaping due to the adhesiveness between the separator and the electrode plate. Therefore, the technical solution of the present application can improve the performance of the battery. 【0034】 To more clearly illustrate the technical concept of the embodiments of this application, the drawings that may be used in the embodiments of this application are briefly described below. However, as is clear, the drawings described below represent only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these without expending any creative effort. In the drawings, the drawings are not drawn to actual scale. [Brief explanation of the drawing] 【0035】 [Figure 1] This is a schematic diagram of an electrode assembly according to one embodiment of the present application. [Figure 2] This is a plan view of the electrode assembly in Figure 1. [Figure 3] Figure 1 is a front view of the electrode assembly. [Figure 4] Figure 1 is a side view of the electrode assembly. [Figure 5] This is a schematic diagram of an electrode assembly according to one embodiment of the present application. [Figure 6] This is a schematic diagram of an electrode assembly according to one embodiment of the present application. [Figure 7] This is a schematic diagram of an electrode assembly according to one embodiment of the present application. [Figure 8] This is a schematic diagram of an electrode plate to which an insulating material is attached according to one embodiment of the present application. [Figure 9] This is a schematic diagram of an electrode plate to which an insulating material is attached according to one embodiment of the present application. [Figure 10] This is a schematic diagram of a battery cell according to one embodiment of the present application. [Figure 11] This is a schematic diagram of a battery according to one embodiment of the present application. [Figure 12] This is a schematic diagram of a power consumption device according to one embodiment of the present invention. [Figure 13] This is a schematic diagram of a winding device according to one embodiment of the present application. [Figure 14] This is a schematic diagram of a winding device according to one embodiment of the present application. [Figure 15]This is a schematic diagram illustrating the use of a winding device according to one embodiment of this application. [Modes for carrying out the invention] 【0036】 The embodiments of this application will be described in more detail below, with reference to the drawings and examples. The detailed descriptions and drawings of the following embodiments are for illustrative purposes only, but are not intended to limit the scope of this application; in other words, this application is not limited to the embodiments described. 【0037】 In the description of this application, unless otherwise specifically stated, "multiple" means two or more; directions or positional relationships indicated by terms such as "up," "down," "left," "right," "inside," and "outside" do not indicate or imply that the indicated device or element must have a specific direction, or must be configured and operated in a specific direction; rather, they are merely for the purpose of easily describing and simplifying the description of this application and should not be understood as limitations of this application. Furthermore, terms such as "first," "second," and "third" are used solely for descriptive purposes and should not be understood as indicating or implying relative importance. "Perpendicular" does not mean perpendicular in the strict sense, but is within an acceptable margin of error. "Parallel" does not mean parallel in the strict sense, but is within an acceptable margin of error. 【0038】 The directional terms appearing in the following description all refer to the directions shown in the figures and do not limit the specific structure of this application. Further explanation is required in the description of this application. Unless explicitly specified and limited, the terms “attachment,” “connection,” and “connection” should be understood broadly, for example, to mean a fixed connection, a detachable connection, or an integral connection; a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of these terms in this application according to the specific context. 【0039】 In this application, the term "and / or" merely describes the relationship between related objects, and indicates that there may be three possible relationships. For example, A and / or B may represent A alone, a combination of A and B, or B alone. In this application, the letter " / " generally indicates that the preceding and succeeding related objects are in an "or" relationship. 【0040】 In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, but is not limited to these in the embodiments of this application. The battery cell may be cylindrical, flattened, rectangular, or have other shapes, and is not limited to these in the embodiments of this application. In general, battery cells are classified into three types based on their packaging: cylindrical battery cells, rectangular battery cells, and pouch battery cells, and is not limited to these in the embodiments of this application. 【0041】 The battery as described in the embodiments of this application refers to a single physical module containing one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery pack or the like. The battery generally includes a housing for packaging one or more battery cells. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells. 【0042】 A battery cell comprises an electrode assembly and an electrolyte, the electrode assembly consisting of a positive electrode plate, a negative electrode plate, and a separator. The battery cell operates primarily through the movement of metal ions between the positive and negative electrode plates. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer being coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protruding from the current collector with the positive electrode active material layer, and the current collector without the positive electrode active material layer being called a positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. Current collectors without the negative electrode active material layer protrude from current collectors with the negative electrode active material layer, and these current collectors without the negative electrode active material layer are designated as negative electrode tabs. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. Multiple positive electrode tabs are stacked to prevent melting even when a large current is applied. Multiple negative electrode tabs are stacked to prevent melting. The separator material may be polypropylene (PP) or polyethylene (PE), etc. 【0043】 To meet various power demands, a battery may contain multiple battery cells, which may be connected in series, in parallel, or in series-parallel configurations, where series-parallel configuration refers to a mixture of series and parallel configurations. Optionally, multiple battery cells may first be connected in series, parallel, or in series-parallel configurations to form a battery module, and then multiple battery modules may be connected in series, parallel, or in series-parallel configurations to form a battery. In other words, multiple battery cells may directly constitute a battery, or they may first constitute a battery module, and then the battery modules may further constitute a battery. The battery is then installed in a power consumption device and provides electrical energy to the power consumption device. 【0044】 The development of battery technology requires the simultaneous consideration of a wide range of design factors, such as energy density, cycle life, discharge capacity, and charge / discharge rate, as well as battery safety. The deposition of metal ions in batteries, such as lithium deposition, is one of the main factors affecting the electrical and safety performance of batteries. When lithium deposition occurs, it not only reduces the electrical performance of the battery, but as the amount of lithium deposition accumulates, dendrites are more likely to form. These dendrites can pierce the separator and cause short circuits within the battery, potentially posing a safety risk. 【0045】 The applicant discovered that in a wound electrode assembly, the curvature of the electrode plate is large in the folded region of the electrode plate near the center of the electrode assembly, making lithium deposition and delamination of the active material more likely to occur in the folded region of the electrode plate. Furthermore, in the shaping process of the electrode assembly, the gap between the positive and negative electrode plates becomes larger in the folded region, further promoting lithium deposition and lithium dendrite formation. All of the above factors are detrimental to improving the performance of the battery. 【0046】 According to this invention, the present application provides a wound electrode assembly comprising an electrode plate and an isolation material attached to the electrode plate and located in the folded region of the electrode plate, which loses its adhesiveness to the electrode plate within a predetermined time. In this way, it is possible to avoid or reduce ions emitted from the positive electrode plate passing through the isolation material and becoming embedded in the negative electrode plate, thereby avoiding phenomena such as lithium deposition due to insufficient void space on the negative electrode plate. The isolation material loses its adhesiveness to the electrode plate within a predetermined time, thus avoiding wrinkles in the electrode plate during subsequent processes such as shaping that would otherwise occur due to adhesion between the isolation material and the electrode plate. Therefore, the invention can improve the performance of a battery. 【0047】 Figure 1 is a schematic diagram of an electrode assembly according to one embodiment of the present application, Figure 2 is a plan view of the electrode assembly in Figure 1, Figure 3 is a front view of the electrode assembly in Figure 1, and Figure 4 is a side view of the electrode assembly in Figure 1. As shown in Figures 1 to 4, the embodiment of the present application provides a wound-type electrode assembly 10, which includes an electrode plate 11 and an isolation element 12. 【0048】 The electrode plate 11 includes a positive electrode plate 111 and a negative electrode plate 112. 【0049】 The isolation element 12 is attached to the electrode plate 11 and is located in the bent region 11b of the electrode plate 11, where the isolation element 12 may be attached to the positive electrode plate 111 or to the negative electrode plate 112. 【0050】 The bending region 11b refers to the portion of the electrode plate 11 that is bent when it is wound. For example, the electrode plate 11 includes a straight region 11a and a bending region 11b, and the electrode plate 11 is not bent in the straight region 11a, the electrode plate 11 extends in the straight region 11a along a first direction, for example, the y direction, and the direction of extension of the electrode plate 11 changes at both ends of the first direction, i.e., the electrode plate 11 is bent in the bending region 11b. 【0051】 It should be noted that the isolation object 12 being located in the bent region 11b of the electrode plate 11 may mean that the isolation object 12 completely covers the electrode plate 11 in the bent region 11b, or it may mean that it partially covers the electrode plate 11 in the bent region 11b. 【0052】 The shape of the electrode plate 11 in the bent region 11b may be semicircular, elliptical, or close to semicircular or elliptical. 【0053】 The isolation material 12 loses its adhesiveness to the electrode plate 11 within a predetermined time. The predetermined time depends on the properties of the isolation material 12 itself, and the predetermined time may be further specifically set according to the actual demand. 【0054】 In the process of manufacturing the wound electrode assembly 10, the isolation material 12 is attached to the electrode plate 11 by an attachment mechanism, then the separator, positive electrode plate 111, and negative electrode plate 112 are wound onto a roughly elliptical core by a winding mechanism, and then the core is shaped by a shaping mechanism to complete the manufacturing of the wound electrode assembly 10. The pre-set time may be the period from the attachment of the isolation material 12 to the electrode plate 11 to the completion of core manufacturing (before shaping the core). 【0055】 Before the winding mechanism winds the electrode plate 11 and the separator, there is adhesion between the separator 12 and the electrode plate 11, thereby facilitating the fixing of the separator 12 to the appropriate position on the electrode plate 11. After the winding mechanism completes winding the electrode plate 11 and the separator, the adhesion between the separator 12 and the electrode plate 11 is lost. Due to the winding by the winding mechanism, the separator 12 is already fixed in the appropriate position, namely, fixed in the folded region 11b between the positive electrode plate 111 and the negative electrode plate 112. At this time, although the adhesion between the separator 12 and the electrode plate 11 is lost, the separator 12 does not fall off the electrode plate 11. 【0056】 Optionally, the pre-set time may be the period from the attachment of the isolation object 12 to the electrode plate 11 to the completion of core shaping. 【0057】 The isolation material 12 loses its adhesiveness to the electrode plate 11 within a predetermined time, thus avoiding any influence on the electrode plate 11 due to its adhesiveness. For example, it is possible to avoid wrinkles in the electrode plate 11 caused by uneven shaping or force applied to the electrode plate 11 due to its adhesiveness. Furthermore, for example, it is possible to avoid side reactions between the adhesive isolation material 12 and the electrolyte in the battery. Furthermore, for example, it is possible to avoid the adhesive isolation material 12 adsorbing ions, sodium ions, or lithium ions between the isolation material 12 and the electrode plate 11 to which the isolation material 12 is attached. All of these are advantageous for improving the battery's lifespan, energy density, and other properties. 【0058】 Optionally, the electrode assembly 10 may further include a tab 114, the tab 114 of which may be connected to a housing that accommodates the electrode assembly 10. 【0059】 In the embodiments of this application, the wound electrode assembly 10 includes an electrode plate 11 and an isolation material 12. The isolation material 12 is attached to the electrode plate 11 and located in the folded region 11b of the electrode plate 11, thereby preventing or reducing ions emitted from the positive electrode plate 111 from passing through the isolation material 12 and becoming embedded in the negative electrode plate 112, thereby preventing phenomena such as lithium deposition and sodium deposition due to insufficient space on the negative electrode plate 112. The isolation material 12 loses its adhesiveness to the electrode plate 11 within a predetermined time, thus preventing wrinkles in the electrode plate 11 during subsequent processes such as shaping caused by adhesiveness between the isolation material 12 and the electrode plate 11. Therefore, the technical invention of this application can improve the performance of the battery. 【0060】 In one embodiment of the present application, the bent region 11b of the electrode plate 11 includes a first surface 1111 and a second surface 1112 that are positioned opposite each other, and the separator 12 is attached to the first surface 1111 and / or the second surface 1112 of the bent region 11b of the electrode plate 11. 【0061】 The first surface 1111 and the second surface 1112 are positioned opposite each other along the thickness direction of the electrode plate 11. For the positive electrode plate 111, the first surface 1111 and the second surface 1112 of the positive electrode plate 111 face toward the adjacent negative electrode plate 112, respectively, and for the negative electrode plate 112, the first surface 1111 and the second surface 1112 of the negative electrode plate 112 face toward the adjacent positive electrode plate 111, respectively. 【0062】 The isolation material 12 may be attached only to the first surface 1111 of the bent region 11b of the electrode plate 11, or only to the second surface of the bent region 11b of the electrode plate 11, or simultaneously to the first surface 1111 and the second surface 1112 of the bent region 11b of the electrode plate 11. In this way, the attachment position and number of isolation materials 12 can be easily selected according to the actual requirements, thereby making it easier to obtain an electrode assembly 10 of the appropriate thickness according to the actual requirements and to achieve the appropriate isolation effect. 【0063】 In one embodiment of this application, the electrode plate 11 includes a positive electrode plate 111, and the separator 12 is attached to the first surface 1111 and / or the second surface 1112 of the bent region 11b of the positive electrode plate 111. 【0064】 In a wound electrode assembly 10, for a positive electrode plate 111 and a negative electrode plate 112 located at the same rotational position, the negative electrode plate 112 is closer to the center of the electrode assembly 10 than the positive electrode plate 111. For example, the positive electrode plate 111 in the first rotation is further from the center of the electrode assembly 10 than the negative electrode plate 112 in the first rotation, and the circumference of the positive electrode plate 111 in the first rotation is greater than the circumference of the negative electrode plate 112 in the first rotation. 【0065】 The first surface 1111 of the bent region 11b of the positive electrode plate 111 may be a convex surface of the positive electrode plate 111, and the convex surface may be the surface of the positive electrode plate 111 that is separated from the negative electrode plate 112 for the positive electrode plate 111 and the negative electrode plate 112 which are at the same circumferential position. 【0066】 The second surface 1112 of the bent region 11b of the positive electrode plate 111 may be a concave surface of the positive electrode plate 111, and the concave surface may be the surface of the positive electrode plate 111 facing the negative electrode plate 112 for the positive electrode plate 111 and the negative electrode plate 112 located at the same circumferential position. 【0067】 In the folded region 11b, for the positive electrode plate 111 and the negative electrode plate 112 located at the same circumferential position, the positive electrode plate 111 has a larger surface area than the negative electrode plate 112. As a result, the number of ions released from the positive electrode plate 111 becomes greater than the number of empty spaces on the negative electrode plate 112 that can accommodate ions. By placing the isolation material 12 in the folded region 11b of the positive electrode plate 111, it is possible to prevent ions from passing through the isolation material 12 and becoming embedded in the negative electrode plate 112, thereby avoiding phenomena such as lithium deposition and sodium deposition. 【0068】 Figure 5 is a schematic diagram of an electrode assembly according to one embodiment of the present invention. As shown in Figure 5, the isolation material 12 is attached to the convex and concave surfaces of the bent region 11b of the positive electrode plate 111. By placing the isolation material 12 on the convex and concave surfaces of the bent region 11b of the positive electrode plate 111, ions can be more effectively prevented from passing through the isolation material 12. 【0069】 Figure 6 is a schematic diagram of an electrode assembly according to one embodiment of the present invention. As shown in Figure 6, the separator 12 is attached to the concave surface of the bent region 11b of the positive electrode plate 111. By placing the separator 12 on the concave surface of the bent region 11b of the positive electrode plate 111, lithium and sodium deposition can be avoided in the bent region 11b of the negative electrode plate 112, and at the same time, it is advantageous to reduce the overall thickness and volume of the electrode assembly 10. 【0070】 Optionally, the separator 12 may be attached to the concave surface of the bent region 11b of the positive electrode plate 111, or to the convex surface of the bent region 11b of the positive electrode plate 111. In other words, the separator 12 may be attached to the positive electrode plate 111, or to both the positive electrode plate 111 and the negative electrode plate 112 simultaneously, for example, by adhesive. 【0071】 The isolation object 12 is optionally placed on the convex and concave surfaces of the bent region 11b of the negative electrode plate 112, that is, the isolation object 12 is placed on both surfaces of the bent region 11b of the negative electrode plate 112. 【0072】 In one embodiment of this application, the electrode assembly 10 includes a positive electrode plate 111 with N circumferences, and the separator 12 is placed in a folded region 11b of the positive electrode plate 111 with 1 to 5 circumferences near the center of the electrode assembly 10, where N ≥ 5. 【0073】 The further away from the center of the electrode assembly 10, the smaller the area difference between the positive electrode plate 111 and the negative electrode plate 112 in the folded region 11b, making it less likely for lithium deposition to occur in the folded region 11b of the negative electrode plate 112. Therefore, by placing the isolation material 12 in the folded region 11b of the positive electrode plate 111 for 1 to 5 turns near the center of the electrode assembly 10, not only can lithium deposition be avoided, but the thickness of the electrode assembly 10 can also be reduced, thereby reducing the volume of the electrode assembly 10, which is advantageous for improving the volumetric energy density of the battery. 【0074】 In the electrode assembly 10, the number of rotations of the positive electrode plate 111 and the negative electrode plate 112 may be specifically set according to the actual demand, for example, they may be set to 20 to 100 rotations. 【0075】 Figure 7 is a schematic diagram of an electrode assembly according to one embodiment of the present application. In one embodiment of the present application, as shown in Figure 7, the electrode assembly 10 further includes a separator 13, which is located between the positive electrode plate 111 and the negative electrode plate 112 to isolate the positive electrode plate 111 and the negative electrode plate 112, and the separator 12 is connected to the separator 13. 【0076】 A gap is provided in the separator 13, allowing ions (e.g., lithium ions, sodium ions) to pass through the separator 13 and move between the positive electrode plate 111 and the negative electrode plate 112, thereby enabling the normal operation of the electrode assembly 10 or the battery. 【0077】 The isolation element 12 may be connected to the separator 13, meaning that the isolation element 12 is located between the separator 13 and the electrode plate 11. By installing the isolation element 12, it is possible to prevent ions from penetrating the isolation element 12 from the positive electrode plate 111, and furthermore, ions will not penetrate the separator 13 installed in conjunction with the isolation element 12. 【0078】 In the region of the electrode plate 11 that is not the bent region 11b or in the straight region 11a, ions can detach from the positive electrode plate 111, pass through the separator 13, and then become embedded in the negative electrode plate 112. 【0079】 In one embodiment of this application, the isolation material 12 is used to prevent ions emitted from the positive electrode plate 111 from passing through the isolation material 12. In this way, phenomena such as lithium deposition and sodium deposition can be avoided in the folded region 11b of the negative electrode plate 112, thereby improving the safety of the battery. 【0080】 In one embodiment of this application, the isolation object 12 loses its adhesiveness within a predetermined time after being irradiated with light in a predetermined wavelength range. In this way, the isolation object 12 can lose its adhesiveness within a predetermined time by being irradiated with light in a predetermined wavelength range. 【0081】 Figure 8 is a schematic diagram of an electrode plate to which an isolation material is attached according to one embodiment of the present application, and Figure 9 is a schematic diagram of an electrode plate to which an isolation material is attached according to one embodiment of the present application. In one embodiment of the present application, as shown in Figures 8 and 9, the isolation material 12 includes a substrate 121 and a delay adhesive 122 applied to the substrate, the delay adhesive 122 is located between the substrate 121 and the electrode plate 11, and the delay adhesive 122 loses its tackiness within a predetermined time after irradiation with light in a predetermined wavelength range, thereby causing the isolation material 12 to lose its tackiness with the electrode plate 11 within a predetermined time. In this way, the delay adhesive makes it possible to achieve the isolation material losing its tackiness within a predetermined time, and this method is easy to implement. 【0082】 In one embodiment of this application, the material of the substrate 121 is at least one of fibers, polymers, polypropylene, polyethylene, rubber, and nonwoven fabric. This material is readily available, thereby facilitating the manufacture of the isolation 12. 【0083】 For example, the material of the substrate 121 may be polyesters, Teflon (registered trademark), or the like. 【0084】 Optionally, the substrate 121 is a non-porous substrate, so that ions such as lithium ions cannot enter and pass through the substrate 121. 【0085】 Optionally, the substrate 121 may be a substrate having a certain microporous structure, as long as it can prevent the passage of ions such as lithium ions. 【0086】 In one embodiment of this application, the delayed adhesive 122 is an ultraviolet delayed adhesive or an infrared delayed adhesive. This adhesive is easy to obtain, thereby facilitating the manufacture of the isolation object 12. 【0087】 Optionally, the passage of ions such as lithium ions can be blocked after the delayed adhesive 122 has cured, i.e., after irradiation with ultraviolet or infrared light. 【0088】 In one embodiment of this application, the thickness d1 of the isolation material 12 is 3 μm to 2 cm. For example, the thickness of the isolation material 12 may be 3 μm, 100 μm, 0.2 cm, 1 cm, 2 cm, etc. 【0089】 By setting the thickness d1 of the isolation material 12 to 3 μm to 2 cm, it is possible to avoid the complexity of the manufacturing process caused by the isolation material 12 being too thin, as well as to avoid the electrode assembly 10 being too thick due to the isolation material 12 being too thick. Furthermore, an appropriate thickness for the isolation material 12 can further guarantee its isolation performance. 【0090】 Optionally, the width k of the separator 12 is between 0.1 cm and 20 cm, and the width of the separator 12 is the dimension along the bending direction of the electrode plate 11. The width of the separator 12 may be set according to the dimensions of the bending region 11b of the electrode plate 11 and specific requirements. For example, the width of the separator 12 may be 0.1 cm, 1 cm, 5 cm, 10 cm, 15 cm, 20 cm, etc. 【0091】 Figure 10 is a schematic diagram of a battery cell according to one embodiment of the present application. As shown in Figure 10, the present application provides a battery cell 20 which includes the wound electrode assembly 10 described above and a housing 21 for housing the electrode assembly 10. 【0092】 Figure 11 is a schematic diagram of a battery according to one embodiment of the present application. As shown in Figure 11, the present application provides a battery 1 which includes the battery cell 20 described above and a housing 11 for housing the battery cell 20. 【0093】 Figure 12 is a schematic diagram of a power consumption device according to one embodiment of the present application. As shown in Figure 12, the present application provides a power consumption device 30, which includes the battery 1 described above, and the battery 1 is used to supply power to the power consumption device 30. The power consumption device 30 may be a vehicle, which may be a fuel oil vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle. A motor 400, a controller 300, and a battery 1 may be installed inside the vehicle, and the controller 300 is for controlling the battery 1 to supply power to the motor 400. For example, the battery 1 may be installed at the bottom, front, or rear of the vehicle. The battery 1 may be used to supply power to the vehicle. For example, the battery 1 can be used as the operating power source for the vehicle and is used in the vehicle's electrical circuit system, for example, for the operating electrical energy demands of the vehicle during starting, navigation, and driving. In another embodiment of this application, the battery 1 can be used not only as a power source for operating the vehicle, but also as a power source for driving the vehicle, providing driving power to the vehicle in place of or in place of gasoline or natural gas. 【0094】 Figure 13 is a schematic diagram of a winding machine according to one embodiment of the present application. As shown in Figure 13, the present application provides a winding machine 50 for manufacturing a wound electrode assembly 10. The winding machine 50 includes a first transport shaft 51 and an irradiation device 52. 【0095】 The first transport shaft 51 is used to transport the electrode plate 11 to which the isolation material 12 is attached. 【0096】 The first transport shaft 51 can transport the positive electrode plate 111 and can also transport the negative electrode plate 112. The length of the first transport shaft 51 may be specifically set according to the dimensions of the electrode plates 11, and this application does not specifically limit it thereto. 【0097】 The irradiation device 52 is used to irradiate the isolation object 12, which is attached to the electrode plate 11, in order to cause the isolation object 12 to lose its adhesiveness to the electrode plate 11 within a predetermined time. 【0098】 In the embodiments of this application, the irradiation device 52 irradiates the isolation object 12, causing the isolation object 12 to lose its adhesiveness to the electrode plate 11 within a predetermined time. This avoids wrinkling of the electrode plate 11 due to adhesiveness in the subsequent shaping process, which is advantageous in improving the performance of the electrode assembly 10 and the battery. 【0099】 Figure 14 is a schematic diagram of a winding machine according to one embodiment of the present invention. In this embodiment, as shown in Figure 14, the irradiation device 52 is installed inside the first transport shaft 51 and is used to irradiate the isolation object 12 when the first transport shaft 51 transports the electrode plate 11. By installing the irradiation device 52 inside the first transport shaft 51 in this way, the space occupied by the irradiation device 52 can be saved. 【0100】 In one embodiment of this application, the first transport shaft 51 includes a first half-shaft 511 and a second half-shaft 512. 【0101】 The irradiation device 52 is installed inside the first half-axis 511. In other words, the inside of the first half-axis 511 has a hollow structure for housing the irradiation device 52. 【0102】 Optionally, the irradiation device 52 may be mounted on a rotatable fixed shaft, which is installed inside the first transport shaft 51, and the first transport shaft 51 is driven by the fixed shaft to rotate and transport the electrode plates 11. 【0103】 Optionally, the irradiation device 52 is connected to the first half-shaft 511 via a locking structure. For example, a buckle is installed on the irradiation device 52, and a locking groove corresponding to the buckle is installed on the first half-shaft 511, and the connection between the irradiation device 52 and the first half-shaft 511 is achieved by fitting the buckle and the locking groove together. 【0104】 Optionally, the irradiation device 52 may be connected to the first semi-axis 511 by built-in bolts or adhesive. 【0105】 The second half-axis 512 is connected to the first half-axis 511, and a light-transmitting region 513 is installed on the second half-axis 512. The light-transmitting region 513 is installed in correspondence with the irradiation device 52, and the light from the irradiation device 52 is emitted through the light-transmitting region 513. 【0106】 The light-transmitting region 513 may be made of a material such as a polymer, acrylic plate, or organic glass. 【0107】 Optionally, the second semi-shaft 512 is manufactured entirely from transparent material. 【0108】 In this embodiment, light emitted from the irradiation device 52 located within the first transport shaft 51 can be emitted through the light-transmitting region 513, thereby ensuring that the isolated object 12 can be irradiated by the irradiation device 52. 【0109】 In one embodiment of this application, a locking structure 514 is installed on a first half-shaft 511 and a second half-shaft 512, and the first half-shaft 511 and the second half-shaft 512 are locked together via the locking structure 514. 【0110】 For example, a buckle groove 514a is installed on the inner wall of the first half-shaft 511, and a buckle 514b corresponding to the buckle groove 514a is installed on the inner wall of the second half-shaft 512, and the locking of the buckle groove 514a and the buckle 514b is achieved to lock the first half-shaft 511 and the second half-shaft 512. 【0111】 In this embodiment, the built-in locking structure 514 connects the first half-shaft 511 and the second half-shaft 512, and does not affect the transport of the electrode plate 11 by the first transport shaft 51. 【0112】 Optionally, the first half-shaft 511 and the second half-shaft 512 are connected by methods such as hinge connection, adhesive bonding, or bolting. 【0113】 In one embodiment of this application, the thickness of the axial wall of the first semi-axis 511 and / or the second semi-axis 512 is 0.5 cm to 18 cm. In this way, it is possible to achieve both structural strength and volume for the first semi-axis 511 and the second semi-axis 512. 【0114】 When the first semi-axis 511 and the second semi-axis 512 have a hollow structure, the thickness d2 of the axis wall is the maximum distance between the outer wall and the inner wall of the first semi-axis 511 or the second semi-axis 512. Here, the outer wall is the outer surface of the first semi-axis 511 or the second semi-axis 512 that is in contact with the electrode plate 11, and the inner wall is the inner surface of the first semi-axis 511 or the second semi-axis 512 that is in contact with the irradiation device 52 or faces the irradiation device 52. 【0115】 In one embodiment of this application, the winding device 50 further includes a control unit 53 and a distance measuring mechanism 54. 【0116】 The distance measuring mechanism 54 is used to measure a first length, which is the length of the electrode plate 11 after passing through the first transport shaft 51. 【0117】 The distance measuring mechanism 54 may be installed on the first transport shaft 51, and in this way, the length of the electrode plate 11 being transported by the first transport shaft 51 can be measured. 【0118】 Optionally, the distance measuring mechanism 54 can be positioned at a certain distance from the first transport axis 51, and based on the information measured by the distance measuring mechanism 54, it can determine the length of the electrode plate 11 that has passed through the first transport axis 51. 【0119】 Optionally, the distance measuring mechanism 54 can also sense the number of tabs and the marks on the tabs, and the distance measuring mechanism 54 can determine the position of the isolated object 12 based on the number of tabs. 【0120】 The control unit 53 is used to control the irradiation device 52 to turn on or off based on a first length. 【0121】 The isolation object 12 is placed at a specific position on the electrode plate 11, and based on a first length, it can be determined whether the isolation object 12 is being transported to the corresponding position on the irradiation device 52. 【0122】 For example, if the irradiation device 52 is installed inside the first transport shaft 51, the control unit 53 can determine, based on a first length, whether the electrode plate portion to which the isolation material 12 is attached has already been transported to the first transport shaft 51 or is about to be transported to the first transport shaft 51, thereby facilitating the control unit 53 to control the turning on of the irradiation device 52. If the electrode plate portion to which the isolation material 12 is attached has already been transported and passed the first transport shaft 51, the control unit 53 can control the turning on of the irradiation device 52. 【0123】 Furthermore, for example, if the irradiation device 52 and the first transport axis 51 are installed in different positions, the control unit 53 can control the irradiation device 52 to turn on or off based on the measurement information from the distance measuring mechanism 54. 【0124】 In this embodiment, by installing a distance measuring mechanism 54 and a control unit 53, it is made easier to immediately detect the isolated object 12 and to irradiate the isolated object 12. 【0125】 The shape of the distance measuring mechanism 54 may be optional, such as cylindrical, cubic, or elliptical. 【0126】 In one embodiment of the present application, the winding device 50 further includes a color sensing mechanism 55 used to sense the color of an isolation object 12 or an electrode plate 11, and a control unit 53 used to control the illumination device 52 to turn on or off based on the color sensed by the color sensing mechanism 55. 【0127】 The isolation object 12 and the electrode plate 11 may have different colors, and when the color sensing mechanism 55 senses the color of the isolation object 12, the control unit 53 can be controlled to turn on the illumination device 52. In this way, by installing the color sensing mechanism 55 and the distance measuring mechanism 54, the accuracy of sensing the isolation object 12 can be further improved, and it becomes easier to immediately control the turning on of the illumination device 52. 【0128】 When the color sensing mechanism 55 senses the color of the electrode plate 11, the control unit 53 can control the irradiation device 52 to turn off. 【0129】 In one embodiment of this application, the control unit 53, the color sensing mechanism 55, and the distance measuring mechanism 54 are installed within the illumination device 52. The illumination device 52 can also be described as a smart illumination device having distance and color sensing functions. In this way, the space occupied by the winding machine 50 is saved, and at the same time, the manufacturing of the illumination device 52 is made easier. 【0130】 Optionally, the irradiation device 52 is an ultraviolet-adaptive timing lamp that can be automatically turned on or off according to a preset time interval. 【0131】 Figure 15 is a schematic diagram of the use of a winding machine according to one embodiment of the present invention. In one embodiment of the present invention, as shown in Figure 15, the isolation material 12 is attached to the surface of the positive electrode plate 111, and the first transport shaft 51 is used to transport the positive electrode plate 111. 【0132】 As shown in Figure 15, the winding device 50 is a device that integrates the first transport shaft 51 and the irradiation device 52 into a single unit. The winding device 50 is used to transport the positive electrode plate 111, and isolation material 12 is attached to both surfaces of the positive electrode plate 111. Two winding devices 50 can be used to irradiate the isolation material 12 on the two surfaces of the positive electrode plate 111. 【0133】 Optionally, after irradiating the isolation material 12 attached to the positive electrode plate 111 using a winding machine 50, the positive electrode plate 111 to which the isolation material 12 is attached, the separator 13 and the negative electrode plate 112 are wound and shaped by a roll pin to form a wound electrode assembly 10. Optionally, in the formed wound electrode assembly 10, the isolation material 12 is located in the bent region 11b of the electrode plate 11. 【0134】 In this embodiment, lithium deposition can be avoided or reduced by installing the isolation material 12 after forming the electrode assembly 10 by winding the positive electrode plate 111, separator 13 and negative electrode plate 112. 【0135】 In one embodiment of this application, the isolation object 12 includes a substrate 121 and a delayed adhesive 122 applied to the substrate 121, the delayed adhesive 122 being located between the substrate 121 and the electrode plate 11, and the delayed adhesive 122 losing its tackiness within a predetermined time after irradiation by the irradiation device 52, thereby causing the isolation object 12 to lose its tackiness with the electrode plate 11 within a predetermined time. In this way, the delayed adhesive 122 and the corresponding irradiation device 52 make it possible to achieve the isolation object 12 losing its tackiness within a predetermined time, and this method is easy to implement. 【0136】 In one embodiment of this application, the irradiation device 52 is an ultraviolet lamp irradiation device or an infrared lamp irradiation device. For example, a tube lamp 56 is installed inside the irradiation device, and the tube lamp may be an ultraviolet tube lamp or an infrared tube lamp, and the irradiation device 52 can emit ultraviolet light with the ultraviolet tube lamp and infrared light with the infrared tube lamp. 【0137】 In this embodiment, the irradiation device 52 is either an ultraviolet lamp irradiation device or an infrared lamp irradiation device, which facilitates the acquisition of the irradiation device 52. 【0138】 In one embodiment of this application, the diameter d3 of the first transport shaft 51 is 1.5 cm to 20 cm. For example, the diameter of the first transport shaft 51 may be 1.5 cm, 2 cm, 3 cm, 5 cm, 10 cm, 15 cm, 20 cm, etc. In this way, the processing of the first transport shaft 51 is made easier, and at the same time, the installation of the first transport shaft 51 according to the size of the electrode plate 11 is made easier, thereby facilitating the transport of the electrode plate 11 by the first transport shaft 51. 【0139】 In one embodiment of this application, the thickness d1 of the isolation material 12 is 3 μm to 2 cm. In this way, it is possible to achieve both the performance of the isolation material 12 and the volume of the electrode assembly 10. 【0140】 This application provides a winding machine 50, which includes a first transport shaft 51 and an irradiation device 52. The first transport shaft 51 is used to transport an electrode plate 11 to which an isolation material 12 is attached. The irradiation device 52 is used to irradiate the isolation material 12 attached to the electrode plate 11, thereby causing the isolation material 12 to lose its adhesiveness to the electrode plate 11 within a predetermined time. The winding machine 50 can be used to manufacture a wound electrode assembly 10, which includes an electrode plate 11 and an isolation material 12. The isolation material 12 is attached to the electrode plate 11 and located in the bent region 11b of the electrode plate 11, thereby preventing or reducing ions emitted from the positive electrode plate 111 from passing through the isolation material and becoming embedded in the negative electrode plate 112, thereby preventing phenomena such as lithium deposition due to insufficient space on the negative electrode plate 112. The isolation material 12 loses its adhesiveness to the electrode plate 11 within a predetermined time, thus avoiding wrinkles in the electrode plate 11 during subsequent processes such as shaping, which would otherwise occur due to adhesiveness between the isolation material 12 and the electrode plate 11. Therefore, the technical invention of this application can improve the performance of the battery. 【0141】 While this application has been described with reference to preferred embodiments, various improvements can be made thereto without departing from the scope of this application, and some components may be replaced with equivalent ones. In particular, any technical feature mentioned in each embodiment can be combined in any way, provided that there is no structural inconsistency. This application is not limited to the specific embodiments disclosed herein, but includes all technical ideas contained in the claims.

Claims

[Claim 1] A wound electrode assembly (10), An electrode plate (11) including a positive electrode plate (111) and a negative electrode plate (112), An electrode assembly (10) comprising an isolation body (12) attached to the bent region (11b) of the electrode plate (11), wherein the isolation body (12) comprises a substrate (121) and a peel-delaying adhesive (122) applied on the substrate (121), the peel-delaying adhesive (122) being located between the substrate (121) and the electrode plate (11), and the isolation body (12) losing its adhesiveness when the peel-delaying adhesive (122) loses its adhesiveness, thereby losing its adhesiveness to the electrode plate (11) and becoming detachable from the electrode plate (11), wherein the isolation body (12) is located between the positive electrode plate (111) and the negative electrode plate (112), and prevents ions emitted from the positive electrode plate (111) from passing through the isolation body (12). [Claim 2] The electrode assembly (10) according to claim 1, characterized in that the bent region (11b) of the electrode plate (11) includes a first surface (1111) and a second surface (1112) that are installed opposite to each other, and the separator (12) is attached to the first surface (1111) and / or the second surface (1112) of the bent region (11b) of the electrode plate (11). [Claim 3] The electrode assembly (10) according to claim 2, characterized in that the isolation material (12) is attached to the first surface (1111) and / or the second surface (1112) of the bent region (11b) of the positive electrode plate (111). [Claim 4] The electrode assembly (10) according to claim 1, wherein the electrode assembly (10) includes the positive electrode plate (111) with N circumferences, and the separator (12) is placed in a folded region (11b) of the positive electrode plate (111) with 1 to 5 circumferences near the center of the electrode assembly (10), where N ≥ 5. [Claim 5] The electrode assembly (10) further includes a separator (13), the separator (13) being located between the positive electrode plate (111) and the negative electrode plate (112) to separate the positive electrode plate (111) and the negative electrode plate (112), The electrode assembly (10) according to claim 1, characterized in that the isolation object (12) is connected to the separator (13). [Claim 6] The electrode assembly (10) according to claim 3, characterized in that the isolation material (12) is used to prevent ions emitted from the positive electrode plate (111) from passing through the isolation material (12). [Claim 7] The electrode assembly (10) according to claim 1, characterized in that the isolation material (12) loses its adhesiveness and becomes detachable from the electrode plate (11) after irradiation with light in a predetermined wavelength range. [Claim 8] The electrode assembly (10) according to claim 1, characterized in that the material of the substrate (121) is at least one of fibers, polymer, polypropylene, polyethylene, rubber, and nonwoven fabric. [Claim 9] The electrode assembly (10) according to claim 1, characterized in that the peel-delaying adhesive (122) is an ultraviolet peel-delaying adhesive (122) or an infrared peel-delaying adhesive (122). [Claim 10] The electrode assembly (10) according to claim 1, characterized in that the thickness (d1) of the isolation material (12) is 3 μm to 2 cm. [Claim 11] A battery cell (20), The electrode assembly (10) according to claim 1, A battery cell (20) characterized by including a housing (21) for housing the electrode assembly (10). [Claim 12] Battery (1), The battery cell (20) described in claim 11, A battery (1) characterized by including a housing (11) for housing the battery cell (20). [Claim 13] A power consumption device (30), A power consumption device (30) comprising the battery (1) described in claim 12, wherein the battery (1) is used to supply power to the power consumption device (30). [Claim 14] A winding machine (50) is used to manufacture a wound electrode assembly (10), and the winding machine (50) is, A first transport shaft (51) for transporting an electrode plate (11) to which an isolation material (12) is attached, wherein the isolation material (12) includes a substrate (121) and a peel-delaying adhesive (122) applied to the substrate (121), and the peel-delaying adhesive (122) is located between the substrate (121) and the electrode plate (11), and the first transport shaft (51) is located between the substrate (121) and the electrode plate (11). The winding device (50) includes an irradiation device (52) that irradiates the isolation material (12) attached to the electrode plate (11) to cause the peel-delaying adhesive (122) to lose its tackiness, thereby causing the isolation material (12) to lose its tackiness to the electrode plate (11) and become peelable from the electrode plate (11), wherein the electrode plate (11) includes a positive electrode plate (111) and a negative electrode plate (112), and the isolation material (12) is located between the positive electrode plate (111) and the negative electrode plate (112) and prevents ions emitted from the positive electrode plate (111) from passing through the isolation material (12). [Claim 15] The winding machine (50) according to claim 14, characterized in that the irradiation device (52) is installed inside the first transport shaft (51) and is used to irradiate the isolation object (12) when the first transport shaft (51) transports the electrode plate (11). [Claim 16] The first transport shaft (51) is A first half-axis (511), wherein the irradiation device (52) is installed within the first half-axis (511), The winding machine (50) according to claim 14, further comprising a second half-axis (512) connected to the first half-axis (511), wherein a light-transmitting region (513) is provided on the second half-axis (512), and the light-transmitting region (513) is provided in correspondence with the irradiation device (52), causing the light from the irradiation device (52) to be emitted through the light-transmitting region (513). [Claim 17] The winding machine (50) according to claim 16, characterized in that a locking structure (514) is installed on the first half-shaft (511) and the second half-shaft (512), and the first half-shaft (511) and the second half-shaft (512) are locked together via the locking structure (514). [Claim 18] The winding machine (50) according to claim 16 or 17, characterized in that the thickness (d2) of the axial wall of the first semi-axis (511) and / or the second semi-axis (512) is 0.5 cm to 18 cm. [Claim 19] The winding device (50) further includes a control unit (53) and a distance measuring mechanism (54), The distance measuring mechanism (54) is used to measure a first length, the first length being the length of the electrode plate (11) after passing through the first transport shaft (51), The winding device (50) according to claim 14, wherein the control unit (53) is used to control the irradiation device (52) to be turned on or off based on the first length. [Claim 20] The winding device (50) further includes a color sensing mechanism (55), which is used to sense the color of the isolation object (12) or the electrode plate (11). The winding device (50) according to claim 19, characterized in that the control unit (53) is used to control the illumination device (52) to turn on or off based on the color detected by the color sensing mechanism (55). [Claim 21] The winding device (50) according to claim 20, characterized in that the control unit (53), the color sensing mechanism (55), and the distance measuring mechanism (54) are installed within the irradiation device (52). [Claim 22] The winding machine (50) according to claim 14, characterized in that the isolation material (12) is attached to the surface of the positive electrode plate (111), and the first transport shaft (51) is used to transport the positive electrode plate (111). [Claim 23] The winding device (50) according to claim 14, characterized in that the irradiation device (52) is an ultraviolet lamp irradiation device or an infrared lamp irradiation device. [Claim 24] The winding machine (50) according to claim 14, characterized in that the diameter (d3) of the first conveying shaft (51) is 1.5 cm to 20 cm. [Claim 25] The winding device (50) according to claim 14, characterized in that the thickness (d1) of the isolation material (12) is 3 μm to 2 cm.

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