System and method for conveying diaphragm by using air guide rollers

Abstract

Systems and methods for conveying a diaphragm by using air guide rollers are disclosed. The system includes an air guide roller controller and an air guide roller configured to receive a control command from the air guide roller controller and inject air onto one surface of the diaphragm as the diaphragm travels.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2024-0060794, filed on May 8, 2024, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] Embodiments of this disclosure relate to systems and methods for conveying diaphragms using air guide rollers. Background Technology

[0004] Compared to multifunctional diaphragms (MFS), multicoated diaphragms (MCS) may move (or travel) due to the severe electrostatic properties that occur when the proportion of adhesive on the diaphragm surface increases.

[0005] The information disclosed in this background section is intended to enhance understanding of the background of this disclosure, and therefore may contain information that does not constitute related (or prior art). Summary of the Invention

[0006] Embodiments of this disclosure provide systems and methods for conveying diaphragms that reduce friction between the diaphragm and rollers as the diaphragm moves (or travels) by using air guide rollers.

[0007] However, the aspects and features of this disclosure are not limited to those mentioned above, and those skilled in the art will clearly understand other aspects and features not mentioned from the description of this disclosure provided below.

[0008] According to embodiments of the present disclosure, a system for conveying a diaphragm using an air guide roller includes an air guide roller controller and an air guide roller configured to receive control commands from the air guide roller controller and to spray air onto a surface of the diaphragm as it travels.

[0009] Air guide rollers can be positioned in areas where forces are concentrated when a diaphragm with electrostatic properties of reference or higher values ​​travels due to ceramic and adhesive coatings.

[0010] Air guide rollers can be positioned in areas where the curvature angle of the path along which the diaphragm travels is a reference angle or greater.

[0011] Air guide rollers can spray air from inside the air guide roller through air holes to the outside of the air guide roller.

[0012] The air guide roller controller can be configured to send control commands based on an air injection pressure value, at which the diaphragm is conveyed by contacting the air guide roller in a state where it is not floating off the air guide roller.

[0013] According to another embodiment of this disclosure, the method of conveying a diaphragm by using an air guide roller includes: arranging an air guide roller with air holes in a region along the path along which the diaphragm travels, and sending an air injection control command based on the electrostatic characteristics of the diaphragm.

[0014] The arrangement of air guide rollers may include arranging the air guide rollers according to the path along which air is injected from the inside of the air guide roller to the outside of the air guide roller.

[0015] The arrangement of the air guide rollers may include placing the air guide rollers in areas with a bending angle of a reference angle or greater along the path along which the diaphragm travels.

[0016] Sending air injection control commands may include sending air injection control commands based on air injection pressure values, at which the diaphragm is conveyed by contacting the air guide rollers while the diaphragm is not floating off the air guide rollers.

[0017] Sending air injection control commands may include sending air injection control commands by adjusting the air injection cycle according to the electrostatic characteristics of the diaphragm.

[0018] According to embodiments of this disclosure, during diaphragm travel, because the diaphragm travels along the air guide roller in the area of ​​force concentration, the diaphragm is reduced or prevented from breaking due to friction with the roller.

[0019] According to embodiments of this disclosure, during diaphragm travel, air is sprayed onto one surface of the diaphragm by air guide rollers, thus reducing or preventing diaphragm rupture by controlling the diaphragm to travel smoothly when it contacts the rollers in a state of floating away from the air guide rollers.

[0020] The aspects and features of this disclosure are not limited to those described above, and other aspects and features not mentioned will be clearly understood by those skilled in the art from the following description. Attached Figure Description

[0021] The accompanying drawings illustrate embodiments of the present disclosure and further describe aspects and features of the disclosure together with the detailed description thereof. Therefore, this disclosure should not be construed as limited to the drawings:

[0022] Figure 1 This is a schematic diagram of the electrode assembly of a secondary battery;

[0023] Figure 2 This is a schematic diagram of a pouch-type secondary battery;

[0024] Figure 3 A schematic diagram showing the appearance of a prismatic secondary battery;

[0025] Figure 4 This is a cross-sectional view of a cylindrical secondary battery;

[0026] Figure 5 The illustration shows aspects of a system for delivering a diaphragm according to an embodiment of the present disclosure.

[0027] Figure 6 This is a cross-sectional view of an air guide roller according to an embodiment of the present disclosure.

[0028] Figure 7 The illustration shows an air guide roller and a diaphragm according to an embodiment of the present disclosure.

[0029] Figure 8 A block diagram illustrating a computer system configured to implement methods according to embodiments of the present disclosure;

[0030] Figure 9 A perspective view of a secondary battery module in which a secondary battery manufactured according to the present disclosure is arranged;

[0031] Figure 10 For including Figure 9 The diagram shows a perspective view of the secondary battery pack of the secondary battery module; and

[0032] Figure 11 For including Figure 10 The diagram shows a vehicle with a secondary battery pack. Detailed Implementation

[0033] In the following, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The terms or words used in this specification and claims should not be interpreted restrictively according to their general or dictionary meaning, but rather should be interpreted as having meanings and concepts consistent with the technical ideas of the present disclosure, based on the principle that the inventor is capable of being his / her own lexicographer to appropriately define concepts in order to best describe his / her disclosure.

[0034] The embodiments described in this specification and the constructions shown in the accompanying drawings are merely some embodiments of this disclosure and do not represent all embodiments of this disclosure. Accordingly, it should be understood that various equivalents and modifications can be made to replace or modify one or more embodiments described herein at the time of filing this application.

[0035] It will be understood that when an element or layer is described as being "on" another element or layer, "connected to," or "attached to" another element or layer, the element or layer may be directly on, connected to, or attached to that other element or layer, or one or more intermediary elements or layers may be present. If an element or layer is described as being "directly on" another element or layer, "directly connected to," or "directly attached to" another element or layer, then no intermediary element or layer is present. For example, when a first element is described as being "attached" or "connected" to a second element, the first element may be directly attached to or connected to the second element, or the first element may be indirectly attached to or connected to the second element via one or more intermediary elements.

[0036] In the figures, the dimensions of various elements, layers, etc., may be exaggerated for clarity. The same reference numerals indicate the same elements. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. Furthermore, the use of “may” in describing embodiments of this disclosure refers to “one or more embodiments of this disclosure.” When expressions such as “at least one of…” and “any one of…” follow a list of elements, they modify the entire list of elements, not individual elements in the list. When a list of elements A, B, and C is indicated by terms such as “at least one of A, B, and C,” “at least one selected from the group of A, B, and C,” or “at least one selected from A, B, and C,” the term may refer to any and all suitable combinations or suitable subsets of A, B, and C, such as A, B, C, A and B, A and C, B and C, or A and B and C. As used herein, the term “use” and variations thereof may be considered synonymous with the term “utilize” and variations thereof, respectively. As used herein, the terms “substantially,” “about,” and similar terms are used as approximations rather than terms of degree, and are intended to explain the inherent variations in measured or calculated values ​​that will be recognized by one of ordinary skill in the art.

[0037] It will be understood that although the terms “first,” “second,” “third,” etc., may be used herein to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion without departing from the teachings of the exemplary embodiments.

[0038] For ease of description, spatial relative terms such as “below,” “under,” “down,” “above,” and “above” are used herein to describe the relationship between one element or feature illustrated in the figures and another element(s). It will be understood that these spatial relative terms are intended to cover different orientations of the device in use or operation, in addition to those described in the figures. For example, if the device in the figures is flipped, the element described as “below” or “under” other elements will be oriented “above” or “above” that other element or feature. Thus, the term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptive terms used herein should be interpreted accordingly.

[0039] The terminology used herein is for the purpose of describing embodiments of this disclosure and is not intended to limit this disclosure. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that, when used in this specification, the term “comprising” and variations thereof indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof.

[0040] Furthermore, any numerical ranges disclosed and / or enumerated herein are intended to include all subranges with the same numerical precision that are incorporated within the enumerated ranges. For example, the range “1.0 to 10.0” is intended to include all subranges between (and including) the enumerated minimum value of 1.0 and the enumerated maximum value of 10.0, i.e., all subranges with a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as, for example, 2.4 to 7.6. Any maximum numerical limit enumerated herein is intended to include all lower numerical limits incorporated therein, and any minimum numerical limit enumerated herein is intended to include all higher numerical limits incorporated therein. Accordingly, the applicant reserves the right to amend this specification (including the claims) to expressly enumerate any subranges that are incorporated within the ranges expressly enumerated herein. All such ranges are intended to be inherently described in this specification such that any amendment to expressly enumerate any such subranges will comply with the requirements of local patent law.

[0041] Referring to two compared elements, features, etc., as “identical” can mean that they are “substantially identical.” Therefore, the term “substantially identical” can include cases where there is a deviation considered low in the art (e.g., less than 5%). Furthermore, when a parameter is said to be uniform in a given region, this can mean that it is uniform in terms of average value.

[0042] Throughout this specification, unless otherwise stated, each element may be in singular or plural form.

[0043] Placing any element "above (or below)" or "on (below)" another element can mean that the arbitrary element can contact the upper (or lower) surface of the element, and that another element can be located between the element and the arbitrary element located above (or below) the element.

[0044] Additionally, it will be understood that when a component is referred to as “linked,” “coupled,” or “connected” to another component, these components can be directly “coupled,” “linked,” or “connected” to each other, or another component can be “between” these components.

[0045] Throughout this specification, unless otherwise stated, when “A and / or B” is mentioned, it means A, B, or A and B. That is, “and / or” includes any or all combinations of the enumerated items. Unless otherwise stated, when “C to D” is mentioned, it means above C and below D.

[0046] The terminology used herein is for the purpose of describing embodiments of this disclosure and is not intended to limit this disclosure.

[0047] Figure 1 This is a schematic diagram of the electrode assembly of a secondary battery.

[0048] The electrode assembly 10 can be formed by winding or stacking a first electrode plate 11, a diaphragm 12, and a second electrode plate 13, each of which is formed as a plate or a film. When the electrode assembly 10 is a wound stack, the winding axis can be parallel to the longitudinal direction of the housing (see, for example...). Figure 3 (See housing 59 in the original text). In other embodiments, the electrode assembly 10 may be stacked rather than wound, but the shape of the electrode assembly 10 is not limited in this disclosure. Additionally, the electrode assembly 10 may be a Z-stacked electrode assembly, wherein the positive electrode plate and the negative electrode plate are inserted into opposite sides of the diaphragm, and then the first electrode plate 11, the diaphragm 12, and the second electrode plate 13 are bent (or folded) into a Z-stack. Furthermore, one or more electrode assemblies may be stacked and housed in the housing such that the long sides of the electrode assemblies are adjacent to each other, and the number of electrode assemblies in the housing is not limited in this disclosure. The first electrode plate 11 of the electrode assembly may serve as a negative electrode, and the second electrode plate 13 may serve as a positive electrode. Of course, the reverse is also possible.

[0049] The first electrode plate 11 can be formed by applying (e.g., coating or depositing) a first electrode active material (such as graphite or carbon) onto a first electrode substrate formed of a metal foil (such as copper, copper alloy, nickel, or nickel alloy). The first electrode plate 11 may include a first electrode tab 14 (e.g., a first uncoated portion), the first electrode tab 14 being an area where the first electrode active material is not applied. The first electrode tab 14 may be connected to an external first terminal. In some embodiments, the first electrode tab 14 may be formed by pre-cutting it during the manufacture of the first electrode plate 11 to protrude to one side of the electrode assembly 10 (or from one side of the electrode assembly 10), or the first electrode tab 14 may protrude further (e.g., further or beyond the diaphragm 12) to one side of the electrode assembly 10 without separate cutting.

[0050] The second electrode plate 13 can be formed by applying (e.g., coating or depositing) a second electrode active material (such as a transition metal oxide) onto a second electrode substrate formed of a metal foil (such as aluminum or an aluminum alloy). The second electrode plate 13 may include a second electrode tab 15 (e.g., a second uncoated portion), the second electrode tab 15 being a region where the second electrode active material is not applied. The second electrode tab 15 may be connected to an external second terminal. In some embodiments, the second electrode tab 15 may be formed by pre-cutting it during the manufacture of the second electrode plate 13 to protrude to the other side (e.g., the opposite side) of the electrode assembly 10, or the second electrode tab 13 may protrude further (e.g., further or beyond the diaphragm 12) to the other side of the electrode assembly without separate cutting.

[0051] In some embodiments, the first electrode tab 14 may be located on the left side of the electrode assembly 10 (e.g., protruding from the left side of the electrode assembly 10), and the second electrode tab 15 may be located on the right side of the electrode assembly 10 (e.g., protruding from the right side of the electrode assembly 10). In other embodiments, the first electrode tab 14 and the second electrode tab 15 may be located on one side of the electrode assembly 10 in the same direction.

[0052] For ease of description, the left and right sides of the electrode assembly are as follows: Figure 1 The electrode assembly 10 is defined by a central orientation, and its position can be changed when the secondary battery is rotated left and right or up and down.

[0053] The diaphragm 12 prevents short circuits between the first electrode plate 11 and the second electrode plate 13 while allowing lithium ions to move between them. The diaphragm 12 may be made of, for example, a polyethylene membrane, a polypropylene membrane, or a polyethylene-polypropylene membrane.

[0054] In some embodiments, the electrode assembly 10 may be housed within a housing along with the electrolyte. In a pouch-type secondary battery, the electrode assembly 10 may be housed within a pouch made of a flexible material (e.g., see...). Figure 2 In cylindrical or prismatic secondary batteries, the electrode assembly 10 can be housed in a cylindrical or prismatic metal casing (see example...). Figure 3 and Figure 4 ).

[0055] Figure 2 The illustration shows a pouch-type secondary battery.

[0056] The pouch-type secondary battery includes an electrode assembly 10 and a pouch 20 for housing the electrode assembly 10.

[0057] Electrode assembly 10 can be with Figure 1 The electrode assembly 10 shown in the figure is identical. The first electrode tab 14 and the second electrode tab 15 of the electrode assembly 10 can be electrically connected to corresponding external first terminal lead 16 and second terminal lead 17 by soldering. Each of the first terminal lead 16 and the second terminal lead 17 may be attached with a tab film 18 for insulation from the bag 20 (e.g., each of the first terminal lead 16 and the second terminal lead 17 may be at least partially covered by the tab film 18).

[0058] The bag 20 can be sealed by bringing the sealing portions 21 at the edges of the bag 20 into contact with each other when the electrode assembly 10 is housed therein, and the seal can be achieved by inserting a connecting piece film 18 between the sealing portions 21. The sealing portions 21 of the bag 20 can each be made of a hot-melt material that generally exhibits weak adhesion to metals. Therefore, the bag 20 can be fused together by inserting the connecting piece film 18 between the sealing portions 21 to ensure a sufficient seal.

[0059] Figure 3 The illustration shows a schematic appearance of a prismatic secondary battery.

[0060] The prismatic housing 59 defines the overall appearance of the prismatic secondary battery and may be made of a conductive metal such as aluminum, aluminum alloy, or nickel-plated steel. Additionally, the housing 59 provides (or may be formed) space for accommodating the electrode assembly 10 therein.

[0061] A cover assembly 60 may be provided on the upper side of the housing 59. The cover assembly 60 may include a cover plate 61 covering an opening in the housing 59, and the housing 59 and the cover plate 61 may be made of a conductive material. A first terminal 63 and a second terminal 62 may be electrically connected to a first electrode tab 14 and a second electrode tab 15 of an electrode assembly 10 within the housing 59, and may be mounted to protrude outward through the cover plate 61.

[0062] The cover plate 61 may have an electrolyte inlet 64 formed to receive a sealing plug, and a vent 66 with a notch 65 may be formed in the cover plate 61. The vent 66 is used to release excess gas generated inside the secondary battery.

[0063] Figure 4 This is a cross-sectional view of a cylindrical secondary battery.

[0064] The cylindrical secondary battery includes an electrode assembly 30, a housing containing the electrode assembly 30 and electrolyte therein, a cover assembly 50 connected to an opening in the housing to seal the housing, and an insulating plate 37 located inside the housing between the electrode assembly 30 and the cover assembly 50.

[0065] The electrode assembly 30 may include a diaphragm 32 and a first electrode 33 and a second electrode 31, the diaphragm 32 being located between the first electrode 33 and the second electrode 31, and the electrode assembly 30 may be wound in the form of a jelly roll.

[0066] The first electrode 33 includes a first substrate and a first active material layer located on the first substrate. A first lead tab 35 extends outward from a first uncoated portion of the first substrate that does not have the first active material layer and is electrically connected to the cover assembly 50.

[0067] The second electrode 31 includes a second substrate and a second active material layer located on the second substrate. A second lead tab 34 extends outward from a second uncoated portion of the second substrate that lacks the second active material layer and is electrically connected to the housing. The first lead tab 35 and the second lead tab 34 may extend in opposite directions to each other.

[0068] The first electrode 33 can serve as a positive electrode. In this embodiment, the first substrate may include, for example, aluminum foil (or may be composed of therefrom), and the first active material layer may include, for example, a transition metal oxide. The second electrode 31 can serve as a negative electrode. In this embodiment, the second substrate may include, for example, copper foil or nickel foil (or may be composed of therefrom), and the second active material layer may include, for example, graphite.

[0069] The diaphragm 32 prevents short circuits between the first electrode 33 and the second electrode 31 while allowing lithium ions to move between them. The diaphragm 32 can be made of, for example, a polyethylene membrane, a polypropylene membrane, or a polyethylene-polypropylene membrane.

[0070] The housing contains the electrode assembly 30 and the electrolyte, and together with the cover assembly 50 forms the appearance of a secondary battery. The housing may have a substantially cylindrical body portion 42 and a bottom portion 41 connected to one side of the body portion 42 (e.g., covering an opening in the housing on that side of the body portion 42). An inwardly deformed rolled edge (e.g., a rolled edge) 43 may be formed in the body portion 42, and an inwardly bent crimped portion (e.g., a folded edge or folded end) 45 may be formed at the open end of the body portion 42. For example, the housing may be formed of nickel-plated iron.

[0071] The rolled edge 43 reduces or prevents movement of the electrode assembly 30 within the housing and facilitates the positioning of the gasket 44 and the cover assembly 50. The crimping portion 45 securely holds the cover assembly 50 in place by pressing the edge of the cover assembly 50 against the gasket 44.

[0072] The cover assembly 50 can be secured to the interior of the crimp portion 45 via a gasket 44 to seal the housing. The cover assembly 50 may include, but is not limited to, an upper cover, a safety vent, a lower cover, an insulating member, and a sub-plate, and may be modified in various ways.

[0073] The top cover may be located at the very top of the cover assembly 50. The top cover may include an upwardly projecting terminal portion that connects to an external circuit, and an outlet for venting gas may be located around the terminal portion.

[0074] The safety vent may be located below the top cover. The safety vent may include a downwardly projecting protrusion that connects to the subplate, and at least one recess may be located around the protrusion.

[0075] When gas is generated in the casing due to, for example, overcharging of the secondary battery or abnormal operation, the protrusion may deform upwards under pressure and separate from the sub-board, while the safety vent may be cut off along the notch (e.g., it may burst). The cut-off safety vent prevents the secondary battery from exploding by venting the gas to the outside.

[0076] The lower cover may be located below the safety vent. The lower cover may have a first opening for exposing the safety vent and a second opening for venting gas. An insulating member may be located between the safety vent and the lower cover to insulate the safety vent and the lower cover.

[0077] The sub-plate may be located below the lower cover. The sub-plate may be secured to the lower surface of the lower cover to block the first opening in the lower cover, and the protrusion of the safety vent may be secured to the sub-plate. The first lead terminal 35 of the electrode assembly 30 (e.g., extending from the electrode assembly 30) may be secured to the sub-plate. Accordingly, the upper cover, safety vent, lower cover, and sub-plate may be electrically connected to the first electrode 33 of the electrode assembly 30.

[0078] The insulating plate 37 may be located below the rolled edge 43 to contact the electrode assembly 30 and may have a tab opening through which the first lead tab 35 passes. The cover assembly 50, electrically connected to the first electrode 33 via the first lead tab 35, may face the electrode assembly 30 (with the insulating plate 37 inserted between the cover assembly 50 and the electrode assembly 30) and may be kept insulated (e.g., electrically insulated) from the electrode assembly 30 due to the insulating plate 37. In some embodiments, another insulating plate 36 may be included for insulation between the electrode assembly 30 and the bottom portion 41 of the housing.

[0079] The separator (i.e., one of the four main components of a battery, along with the positive electrode material, the negative electrode material, and the electrolyte) physically separates the positive and negative electrodes so that they do not come into contact with each other within the battery, and also acts as a channel for lithium ions to move between the positive and negative electrodes due to a fine process called micropores.

[0080] In multi-coated diaphragm (MCS) drive units, it is possible for the diaphragm to roll vertically in response to the left-right movement of the corresponding roller and in the rollers adjacent to it. Compared to multi-functional diaphragms (MFS), multi-coated diaphragms (MCS) may experience severe electrostatic charges as the proportion of adhesive on the diaphragm surface increases. Multi-coated diaphragms (MCS) frequently experience failure due to diaphragm rupture as forces generated by electrostatic properties cause the diaphragm to adhere to the rollers while traveling in the stacking device. This force interacts with the moving forces of the worktable on the JR stack, resulting in frequent ruptures.

[0081] According to embodiments of this disclosure, when the diaphragm travels in a stacking apparatus, friction between the diaphragm and the rollers located in areas of force concentration can be reduced by replacing the rollers with air guide rollers during the diaphragm's travel.

[0082] Figure 5 The illustration shows aspects of a system for delivering a diaphragm according to an embodiment of the present disclosure. Figure 6 This is a cross-section of an air guide roller according to an embodiment of the present disclosure. Figure 7 The illustration shows an air guide roller and a diaphragm according to an embodiment of the present disclosure.

[0083] According to embodiments of the present disclosure, a system for conveying a diaphragm using an air guide roller 100 may include an air guide roller controller and an air guide roller 100, the air guide roller 100 receiving control commands from the air guide roller controller and injecting (e.g., emitting) air onto a surface of the diaphragm 200 as the diaphragm 200 travels.

[0084] The air guide roller 100 can be positioned in the area where the force is concentrated when the diaphragm 200, which has electrostatic properties of a reference (or preset) value or greater due to the ceramic coating and adhesive coating, travels.

[0085] The air guide roller 100 can be set in an area where the bending angle of the path along which the diaphragm 200 travels is a reference (or preset) angle or a larger angle.

[0086] The air guide roller 100 can spray air from the inside of the air guide roller 100 through air holes (e.g., air openings) 110 to the outside of the air guide roller 100, each air hole having a shape (e.g., a preset shape).

[0087] refer to Figure 6 The air holes 110 can be arranged at intervals of about 30 degrees based on the center of the circular air guide roller 100.

[0088] According to another embodiment of this disclosure, the air holes 110 may be provided in some areas on the surface of the air guide roller 100. The air holes 110 may be formed such that the spacing between the air holes 110 gradually increases or decreases as the air holes move away from a reference point on the surface of the air guide roller 100 in one direction along the circular circumference of the air guide roller 100.

[0089] According to another embodiment of the present disclosure, the vent 110 may be formed such that the length or width of the vent 110 gradually increases, decreases, or increases and then decreases as the vent moves away from a reference point on the surface of the air guide roller 100 in one direction along the circular circumference of the air guide roller 100.

[0090] According to another embodiment of this disclosure, air holes 110 may be disposed in some areas of the surface of the air guide roller 100, and may be configured such that the spacing of the air holes 110 extends from the center point of the area where the air guide roller 100 contacts the diaphragm 200 toward the outside of the air guide roller (e.g., refer to...). Figure 5 (From the center point of the contact area toward the left and right) gradually increases, gradually decreases, gradually increases and then gradually decreases, or gradually decreases and then gradually increases.

[0091] According to another embodiment of this disclosure, the air hole 110 may be formed such that the length or width of the air hole 110 gradually increases, gradually decreases, gradually increases and then gradually decreases, or gradually decreases and then gradually increases from the center point of the area where the air guide roller 100 contacts the diaphragm 200 toward the outside of the air guide roller.

[0092] The air guide roller controller can send control commands by taking into account (e.g., according to) an air injection pressure value, at which the diaphragm 200 is conveyed by contacting the air guide roller 100 in a state where it is not floating off the air guide roller 100 (e.g., not lifted off the air guide roller 100).

[0093] The air guide roller controller can adjust the air injection cycle, adjust the injection intensity (e.g., air pressure) of the injected air for each cycle, or adjust the air injection duration by taking into account the electrostatic characteristics of the diaphragm 200 and the drive speed.

[0094] According to embodiments of the present disclosure, a method of conveying a diaphragm using an air guide roller may include providing an air guide roller with perforations in a region along the path along which the diaphragm travels, and sending an air jet control command by taking into account (e.g., according to) the electrostatic properties of the diaphragm.

[0095] Air guide rollers with air holes of a shape (e.g., the same or a preset shape) can be configured by taking into account the path of air being injected from the inside of the air guide roller to the outside of the air guide roller.

[0096] The air vents can be disposed in certain areas on the surface of the air guide roller, and can be configured such that the spacing between the air vents gradually increases and decreases, or gradually increases and then decreases, as the air vents move away from a reference point on the surface of the air guide roller in one direction along the circular circumference of the air guide roller. Furthermore, the length or width of the air vents can be configured such that the length or width of the air vents gradually increases and decreases, or gradually increases and then decreases, as the air vents move away from a reference point on the surface of the air guide roller in one direction along the circular circumference of the air guide roller.

[0097] The air vents can be disposed in certain areas on the surface of the air guide roller, and can be configured such that the spacing between the air vents gradually increases, decreases, increases and then decreases again from the center point of the area where the air guide roller contacts the diaphragm towards the outside of the air guide roller, or decreases and then increases. Furthermore, the length or width of the air vents can be configured such that the length or width of the air vents gradually increases, decreases, increases and then decreases again from the center point of the area where the air guide roller contacts the diaphragm towards the outside of the air guide roller, or decreases and then increases.

[0098] Air guide rollers can be positioned in areas where the curvature angle of the path along which the diaphragm travels is a reference (e.g., preset) angle or greater.

[0099] Air injection control commands can be sent by taking into account (e.g., based on) an air injection pressure value, at which the diaphragm is conveyed by contacting the air guide roller in a state where it is not lifted off the air guide roller. Accordingly, by causing the air guide roller to inject (or discharge) air while the diaphragm contacts the air guide roller in a state where it is not lifted off the air guide roller (e.g., not pushed away from the air guide roller), the diaphragm can travel smoothly.

[0100] Air injection control commands can be sent to adjust the air injection cycle by taking into account the electrostatic characteristics of the diaphragm. The air injection cycle can be adjusted by comprehensively considering the electrostatic characteristics of the diaphragm and the drive speed, or the injection intensity of the injected air can be adjusted for each cycle.

[0101] Figure 8 This is a block diagram for describing a computer system configured to implement a method according to an embodiment of the present disclosure.

[0102] refer to Figure 8 According to one embodiment, computer system 1300 may include at least one of a processor 1310, a memory 1330, an input interface device 1350, an output interface device 1360, and a storage device 1340 that communicate with each other via a bus 1370. Computer system 1300 may also include a communication device 1320 connected to a network. Processor 1310 may be a central processing unit (CPU) or semiconductor device that executes instructions stored in memory 1330 or storage device 1340. Memory 1330 and storage device 1340 may include various types of volatile or non-volatile storage media. For example, memory may include read-only memory (ROM) and random access memory (RAM). In embodiments of this disclosure, memory may be located inside or outside the processor and may be connected to the processor. Memory may be various suitable types of volatile or non-volatile storage media, and may include, for example, read-only memory (ROM) or random access memory (RAM).

[0103] According to embodiments of this disclosure, a system for conveying a diaphragm using an air guide roller may include a memory 1330 storing a diaphragm conveying program using the air guide roller and a processor 1310 executing the diaphragm conveying program. The processor 1310 may send air injection control commands by taking into account the electrostatic characteristics of the diaphragm.

[0104] The processor 1310 can send an air injection control command by taking into account the air injection pressure value, at which the MCS diaphragm is conveyed by contacting the air guide roller in a state where it is not floating off the air guide roller.

[0105] The processor 1310 can send air injection control commands that adjust the air injection cycle by taking into account the electrostatic characteristics of the diaphragm, and can adjust the air injection cycle, the injection intensity of the injected air for each cycle, and the injection duration of the air by taking into account the electrostatic characteristics of the diaphragm and the drive speed.

[0106] Accordingly, embodiments of this disclosure can be implemented as methods in a computer or a non-transitory computer-readable medium storing computer-executable instructions. In embodiments, when executed by a processor, the computer-readable instructions can perform a method according to at least one aspect of this disclosure.

[0107] The communication device 1320 can send or receive wired or wireless signals.

[0108] Furthermore, the methods according to embodiments of this disclosure can be implemented in the form of program instructions that can be executed by various computer devices and recorded on a computer-readable medium.

[0109] Computer-readable media may include program instructions, data files, data structures, etc., individually or in combination. Program instructions recorded on a computer-readable medium may be specifically designed and configured for embodiments of this disclosure, or may be known and available to those skilled in the art of computer software. A computer-readable recording medium may include hardware devices configured to store and execute program instructions. For example, a computer-readable recording medium may be a magnetic medium (such as a hard disk, floppy disk, and magnetic tape), an optical medium (such as a CD-ROM and DVD), or a magneto-optical medium (such as a floppy disk, ROM, RAM, flash memory, etc.). Program instructions may include not only machine language code (such as code generated by a compiler), but also high-level language code that can be executed by a computer through an interpreter.

[0110] In the following, suitable materials that can be used in secondary batteries according to embodiments of the present disclosure will be described.

[0111] As the positive electrode active material, compounds capable of reversibly inserting / deintercalating lithium (e.g., lithiation intercalation compounds) can be used. For example, at least one of lithium and a composite oxide of a metal selected from cobalt, manganese, nickel, and combinations thereof can be used.

[0112] The composite oxide may be a lithium transition metal composite oxide, and examples may include lithium nickel-based oxides, lithium cobalt-based oxides, lithium manganese-based oxides, lithium iron phosphate-based compounds, cobalt-free nickel manganese-based oxides, or combinations thereof.

[0113] As an example, a compound represented by any of the following chemical formulas can be used: Li a A 1-b X b O 2-c D c (0.90≤a≤1.8, 0≤b≤0.5, 0≤c≤0.05); Li a Mn 2-b X b O 4-c D c(0.90≤a≤1.8, 0≤b≤0.5, 0≤c≤0.05); Li a Ni 1-b-c Co b X c O 2-α D α (0.90≤a≤1.8, 0≤b≤0.5, 0≤c≤0.5, 0<α<2); Li a Ni 1-b- c Mn b X c O 2-α D α (0.90≤a≤1.8, 0≤b≤0.5, 0≤c≤0.5, 0<α<2); Li a Ni b Co c L 1 d GeO2 (0.90≤a≤1.8, 0≤b≤0.9, 0≤c≤0.5, 0≤d≤0.5, 0≤e≤0.1); Li a NiG b O2(0.90≤a≤1.8, 0.001≤b≤0.1); Li a CoG b O2(0.90≤a≤1.8, 0.001≤b≤0.1); Li a Mn 1-b G b O2(0.90≤a≤1.8, 0.001≤b≤0.1); Li a Mn2G b O4(0.90≤a≤1.8, 0.001≤b≤0.1), Li a Mn 1-g G g PO4(0.90≤a≤1.8, 0≤g≤0.5); Li (3-f) Fe2(PO4)3 (0≤f≤2); Li a FePO4 (0.90≤a≤1.8).

[0114] In the above: A is Ni, Co, Mn or a combination thereof; X is Al, Ni, Co, Mn, Cr, Fe, Mg, Sr, V, rare earth elements or a combination thereof; D is O, F, S, P or a combination thereof; G is Al, Cr, Mn, Fe, Mg, La, Ce, Sr, V or a combination thereof; and L1 is Mn, Al or a combination thereof.

[0115] The positive electrode for a lithium secondary battery may include a substrate and a positive electrode active material layer formed on the substrate. The positive electrode active material layer may include a positive electrode active material and may further include a binder and / or a conductive material.

[0116] Based on 100 wt% of the positive electrode active material layer, the content of the positive electrode active material is in the range of about 90 wt% to about 99.5 wt%, and based on 100 wt% of the positive electrode active material layer, the contents of the binder and the conductive material are respectively in the range of about 0.5 wt% to about 5 wt%.

[0117] The substrate may be aluminum (Al), but is not limited thereto.

[0118] The negative electrode active material may include a material capable of reversibly intercalating / deintercalating lithium ions, lithium metal, a lithium metal alloy, a material capable of doping and dedoping lithium, or a transition metal oxide.

[0119] The material capable of reversibly intercalating / deintercalating lithium ions may be a carbon-based negative electrode active material, which may include, for example, crystalline carbon, amorphous carbon, or a combination thereof. Examples of crystalline carbon may include graphite such as natural graphite or artificial graphite, and examples of amorphous carbon may include soft carbon, hard carbon, pitch carbide, mesophase pitch carbide, and sintered coke.

[0120] The Si-based negative electrode active material or the Sn-based negative electrode active material may be used as the material capable of doping and dedoping lithium. The Si-based negative electrode active material may be silicon, a silicon-carbon composite, SiO x (0 < x < 2), a Si-based alloy, or a combination thereof.

[0121] The silicon-carbon composite may be a composite of silicon and amorphous carbon. According to one embodiment, the silicon-carbon composite may be in the form of silicon particles and amorphous carbon coated on the surface of the silicon particles.

[0122] The silicon-carbon composite may further include crystalline carbon. For example, the silicon-carbon composite may include a core containing crystalline carbon and silicon particles and an amorphous carbon coating on the surface of the core.

[0123] The negative electrode for a lithium secondary battery may include a substrate and a negative electrode active material layer provided on the substrate. The negative electrode active material layer may include a negative electrode active material and may further include a binder and / or a conductive material.

[0124] For example, the negative electrode active material layer may include about 90 wt% to about 99 wt% of the negative electrode active material, about 0.5 wt% to about 5 wt% of the binder, and about 0 wt% to about 5 wt% of the conductive material.

[0125] Non-aqueous binders, aqueous binders, dry binders, or combinations thereof may be used as binders. When an aqueous binder is used as a negative electrode binder, it may further include cellulose compounds capable of imparting viscosity.

[0126] As the negative electrode substrate, one can be selected from copper foil, nickel foil, stainless steel foil, titanium foil, nickel foam, copper foam, polymer substrate coated with conductive metal, and combinations thereof.

[0127] Electrolytes used in lithium secondary batteries may include non-aqueous organic solvents and lithium salts.

[0128] Non-aqueous organic solvents act as a medium through which ions participating in the electrochemical reactions of the battery can move.

[0129] Non-aqueous organic solvents can be carbonate-based solvents, ester-based solvents, ether-based solvents, ketone-based solvents, alcohol-based solvents, or aprotic solvents, and can be used alone or in combination of two or more.

[0130] In addition, when using carbonate-based solvents, a mixture of cyclic carbonates and chain carbonates can be used.

[0131] Depending on the type of lithium secondary battery, a separator may be present between the first electrode plate (e.g., the negative electrode) and the second electrode plate (e.g., the positive electrode). Polyethylene, polypropylene, polyvinylidene fluoride, or multilayer films comprising two or more layers thereof can be used as the separator.

[0132] The diaphragm may include a porous substrate and a coating on one or both surfaces of the porous substrate, comprising organic materials, inorganic materials, or combinations thereof.

[0133] Organic materials may include polyvinylidene fluoride polymers or (meth)acrylic acid polymers.

[0134] Inorganic materials may include, but are not limited to, inorganic particles selected from Al2O3, SiO2, TiO2, SnO2, CeO2, MgO, NiO, CaO, GaO, ZnO, ZrO2, Y2O3, SrTiO3, BaTiO3, Mg(OH)2, boehmite and combinations thereof.

[0135] Organic and inorganic materials may be mixed in a coating, or may be in the form of a coating that includes (or contains) organic materials and a coating that includes (or contains) inorganic materials stacked on top of each other.

[0136] Figure 9This is a perspective view of a secondary battery module in which prismatic secondary batteries are arranged according to an embodiment of the present disclosure. As the capacity of secondary batteries used to power electric vehicles and the like increases, secondary battery modules can be manufactured by arranging multiple secondary battery cells laterally and / or longitudinally and connecting them together. Multiple secondary batteries can be arranged in a space defined by a pair of facing end plates 68a and 68b and a pair of facing side plates 69a and 69b. The secondary batteries can be arranged in a certain orientation and number to obtain desired voltage and current specifications.

[0137] Figure 10 This is a perspective view of a battery pack 70 according to an embodiment of the present disclosure. (See reference...) Figure 10 The battery pack 70 may include components to which each battery is electrically connected and a battery pack housing that houses the components. In the accompanying drawings, for ease of illustration, components including busbars, cooling units, external terminals for electrically connecting the batteries, etc., are not shown.

[0138] The battery pack 70 may be installed on (or inside) the vehicle. The vehicle may be, for example, an electric vehicle, a hybrid vehicle, or a plug-in hybrid vehicle. The vehicle may be a four-wheeled vehicle or a two-wheeled vehicle, but is not limited thereto. Figure 11 It is shown that its lower part includes Figure 10 The vehicle V is shown with battery pack 70. The vehicle V can operate by receiving power from battery pack 70 (e.g., it can be powered by receiving power).

[0139] Although the present disclosure has been described above with respect to its embodiments, the present disclosure is not limited thereto. Various modifications and variations may be made thereto by those skilled in the art within the spirit of the present disclosure and the equivalents of the claims.

[0140] However, the aspects and features of this disclosure are not limited to those described above, and those skilled in the art will clearly understand other aspects and features not mentioned from the description of this disclosure.

Claims

1. A system for conveying a diaphragm using an air guide roller, the system comprising: Air guide roller controller; and The air guide roller is configured to receive control commands from the air guide roller controller and to spray air onto a surface of the diaphragm as the diaphragm travels.

2. The system according to claim 1, wherein, The air guide roller is positioned in the region where force is concentrated when the diaphragm, which has electrostatic properties of a reference value or greater due to the ceramic coating and adhesive coating, travels.

3. The system according to claim 2, wherein, The air guide roller is positioned in a region where the curvature angle of the path along which the diaphragm travels is a reference angle or greater.

4. The system according to claim 1, wherein, The air guide roller sprays air from inside the air guide roller through air holes to the outside of the air guide roller.

5. The system according to claim 4, wherein, The air guide roller controller is configured to send the control command based on an air injection pressure value, at which the diaphragm is conveyed by contacting the air guide roller in a state where it is not floating off the air guide roller.

6. A method for conveying a diaphragm using an air guide roller, the method comprising: Air guide rollers with air holes are arranged in the region along the path of the diaphragm. as well as Air injection control commands are sent based on the electrostatic properties of the diaphragm.

7. The method according to claim 6, wherein, The arrangement of the air guide rollers includes arranging the air guide rollers by taking into account the path along which air is injected from the inside of the air guide rollers to the outside of the air guide rollers.

8. The method according to claim 7, wherein, The arrangement of the air guide rollers includes: placing the air guide rollers in a region of bending angle with a reference angle or greater along the path along which the diaphragm travels.

9. The method according to claim 6, wherein, The sending of the air injection control command includes: sending the air injection control command according to an air injection pressure value, at which the diaphragm is conveyed by contacting the air guide roller with the diaphragm in a state where it is not floating off the air guide roller.

10. The method according to claim 9, wherein, The transmission of the air injection control command includes: transmitting the air injection control command by adjusting the air injection cycle according to the electrostatic characteristics of the diaphragm.

Images