Method and apparatus for measuring deformation amount of tray for secondary battery

Abstract

The present disclosure provides a method and apparatus for measuring a deformation amount of a tray. A method of measuring a deformation amount of a tray for a secondary battery includes fixing the tray for the secondary battery, moving the tray to a reference position, measuring displacement at a plurality of measurement points on the tray, and storing and analyzing data of the measured displacement to calculate a deformation amount, and evaluating a state of the tray.

Description

Technical Field

[0001] An aspect of the embodiments of this disclosure relates to a method and apparatus for measuring the amount of deformation of a tray for a secondary battery. Background Technology

[0002] Unlike primary batteries, which are not designed for recharging, secondary batteries are designed for both charging and discharging. Low-capacity secondary batteries can be used in portable small electronic devices such as smartphones, feature phones, laptops, digital cameras, and camcorders, while high-capacity secondary batteries are widely used as power sources for motors in hybrid vehicles, electric vehicles, etc., and for storing electrical energy. A secondary battery typically includes an electrode assembly containing positive and negative electrodes (or formed by positive and negative electrodes), a housing of the electrode assembly, and electrode terminals connected to the electrode assembly.

[0003] In the manufacturing process of secondary batteries, the formation process is a process that induces electrochemical activation by performing initial charging and discharging of battery cells, and it has a significant impact on the performance, stability and lifespan of the battery.

[0004] Trays used in the formation process or during the movement of secondary batteries safely support and transport battery cells, but trays often become deformed or damaged due to repeated loads and long-term use.

[0005] Currently, pallets are primarily inspected visually, and replaced when severe deformation or damage is detected. However, this visual inspection cannot accurately measure the amount of deformation and has limitations in detecting minute deformations and performing preventative maintenance. For example, when deformation accumulates, it can affect the safety of individual battery cells and may lead to major accidents.

[0006] The information disclosed above in this background section is intended to enhance the understanding of the background of this disclosure, and therefore may contain information that does not constitute related (or prior art). Summary of the Invention

[0007] Embodiments of this disclosure provide a method and apparatus for measuring the deformation of a tray, which is capable of measuring the deformation of a tray for secondary batteries and analyzing the deformation to assess the condition of the tray.

[0008] According to an embodiment of this disclosure, a method for measuring the deformation of a tray for a secondary battery includes: fixing the tray; moving the tray to a reference position; measuring the displacement at a plurality of measuring points on the tray; and storing and analyzing data of the measured displacements to calculate the deformation and assess the state of the tray.

[0009] The tray is secured by fasteners that contact the side surface of the tray to prevent it from wobbling and tilting.

[0010] The reference position can be adjusted using the lifting unit located beneath the tray.

[0011] The plurality of measurement points may include the center of the pallet and locations where load concentration and deformation may occur (including locations around the center of the pallet).

[0012] The deformation can be calculated by comparing the measured displacement data with a reference distance, and a warning for maintenance or replacement can be generated when the deformation exceeds the reference value.

[0013] The warning can be sent to the management system and reflected in the maintenance plan.

[0014] The measured displacement data can be stored and analyzed, and used to predict the expected lifespan of the pallet and establish a maintenance plan.

[0015] According to another embodiment of this disclosure, an apparatus for measuring the deformation of a tray for a secondary battery includes: a fastener configured to secure the tray; a lifting unit configured to move the tray to a reference position; a displacement sensor configured to measure displacement at a plurality of measuring points on the tray; a data processing unit configured to store and analyze data of the measured displacements to calculate the deformation and evaluate the state of the tray; and a controller configured to control the operation of the fastener, the lifting unit, the displacement sensor, and the data processing unit.

[0016] The lifting unit may include: a rack jack, located below the pallet and configured to lift the pallet; and a support unit configured to support the pallet and keep the pallet in a horizontal position.

[0017] The plurality of measurement points may include the center of the pallet and locations where load concentration and deformation may occur (including locations around the center of the pallet).

[0018] The displacement sensor can be located at the plurality of measurement points, and at each of the plurality of measurement points, it can measure the displacement between the tray and the reference distance.

[0019] The data processing unit can be configured to compare the measured displacement data with a reference distance to calculate the deformation, and when the deformation exceeds the reference value, the data processing unit can generate a warning for maintenance or replacement.

[0020] The warning can be sent to the internal management system and reflected in the maintenance plan.

[0021] The data processing unit can be configured to predict the expected lifespan of the tray based on the data of the measured displacement, and can generate maintenance times.

[0022] The controller can synchronize the movement of the reference position of the tray with the measurement by the displacement sensor and send the data to the data processing unit in real time.

[0023] According to another embodiment of this disclosure, a method for measuring the deformation of a tray for a secondary battery includes: fixing the tray; moving the tray to a reference position; measuring the displacement at multiple measuring points on the tray in real time; calculating the deformation by comparing the measured displacement data with a reference distance; generating a warning when the calculated deformation exceeds a reference value; and predicting the expected lifespan of the tray based on the deformation.

[0024] The reference position can be adjusted using the lifting unit located beneath the tray.

[0025] The displacement measurement can be performed using multiple displacement sensors at the center of the tray and at locations where load distribution and deformation may occur (including locations around the center of the tray).

[0026] The calculation of the deformation may include: calculating the overall deformation of the pallet by integrating the displacement data obtained at the plurality of measurement points and further analyzing the local deformation at measurement points other than the center of the pallet among the plurality of measurement points.

[0027] The predicted lifespan can be determined by combining the deformation data with environmental conditions to predict the service life of the pallet.

[0028] The aspects and features of this disclosure are not limited to those described above, and those skilled in the art will clearly understand from the description of this disclosure provided below that other aspects and features not specifically mentioned herein. Attached Figure Description

[0029] The following accompanying drawings illustrate embodiments of the present disclosure and further describe aspects and features of the disclosure together with the detailed description thereof. Therefore, the disclosure should not be construed as limited to the drawings, in which:

[0030] Figure 1 This is a schematic diagram illustrating a pouch-type secondary battery;

[0031] Figure 2This is a cross-sectional view illustrating a cylindrical secondary battery;

[0032] Figure 3A This is a top perspective view illustrating the exterior of a prismatic secondary battery;

[0033] Figure 3B It is along Figure 3A A cross-sectional view taken from line I-I' in the diagram;

[0034] Figure 4 This is a schematic diagram illustrating a secondary battery module in which a secondary battery is installed;

[0035] Figure 5 Examples include Figure 4 The diagram shows a secondary battery module and its secondary battery pack.

[0036] Figure 6 Examples include Figure 5 The image shows a vehicle with a secondary battery pack.

[0037] Figure 7 This is a flowchart describing the steps of a method for measuring the deformation of a tray for a secondary battery according to an embodiment of the present disclosure;

[0038] Figure 8 This is a diagram illustrating an apparatus for measuring the amount of deformation of a tray for a secondary battery according to another embodiment of the present disclosure;

[0039] Figure 9 This is a flowchart describing the steps of a method for measuring the deformation of a tray for a secondary battery according to another embodiment of the present disclosure;

[0040] Figure 10 This is a diagram illustrating the configuration of components of a system for measuring the deformation of a tray for a secondary battery according to an embodiment of the present disclosure; and

[0041] Figure 11 This is a diagram illustrating multiple measuring points and displacement sensors for measuring the deformation of a tray for a secondary battery according to an embodiment of the present disclosure. Detailed Implementation

[0042] 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 narrowly according to their general or dictionary meaning, but should be interpreted as having meanings and concepts consistent with the technical spirit of the present disclosure, based on the principle that the inventor can be his / her own lexicographer to appropriately define the concepts of the terms and best describe his / her invention. The embodiments described in this specification and the configurations shown in the drawings are some embodiments of the present disclosure and do not represent all aspects, features, and embodiments of the present disclosure. Accordingly, it should be understood that at the time of filing this application, various equivalents and modifications that can replace or modify one or more embodiments or features described herein may exist.

[0043] It will be further understood that, if used in this specification, the terms “comprising” and / or “including” specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0044] In the figures, the dimensions of various components, layers, etc., may be exaggerated for clarity. Additionally, the same reference numerals may be assigned to the same parts in different embodiments.

[0045] Referring to two compared elements, features, etc., as “identical” can mean that they are “substantially identical.” Therefore, the phrase “substantially identical” can include cases where the deviation is considered low in the art (e.g., less than 5%). Additionally, when a parameter is said to be consistent in a given region, it can mean that it is consistent in terms of average value.

[0046] It should be understood that although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are used only to distinguish one component from another, and unless otherwise stated, the first component may of course also be the second component.

[0047] Throughout this specification, unless otherwise stated, each element may be singular or plural.

[0048] 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 the other element can be located between the element and any element placed on (or below) the element.

[0049] Additionally, it will be understood that when a component is referred to as “connected,” “linked,” or “attached” to another component, these components can be directly “connected,” “linked,” or “attached” to each other, or another component can be “between” these components.

[0050] As used herein, the term “and / or” includes any one and all combinations of one or more of the associated listed items. Furthermore, the use of “may” refers to “one or more embodiments of this disclosure” when describing embodiments of this disclosure. Expressions such as “at least one of…” and “any one of…” modify the entire list of elements if they precede the list of elements, not individual elements in the list.

[0051] Throughout the specification, when “A and / or B” is stated, it means A, B or A and B unless otherwise stated, and when “C to D” is stated, it means C and below unless otherwise stated.

[0052] When a list of elements A, B, and C is referred to using phrases such as “at least one of A, B, and C,” “at least one of A, B, or C,” “at least one selected from the group of A, B, and C,” or “at least one selected from A, B, and C,” the phrase may refer to any one of A, B, and C and all suitable combinations or subsets of them, such as A, B, C, A and B, A and C, B and C, or A and B and C.

[0053] As used herein, the term “use” may be considered synonymous with the term “utilize”. As used herein, the terms “substantially,” “about,” and similar terms are used as approximations rather than as terms of degree and are intended to describe the inherent variations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art.

[0054] It will be understood that although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or segment from another element, component, region, layer, or segment. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment.

[0055] 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 other elements or features. It will be understood that spatial relative terms are intended to cover different orientations of the device in use or operation besides the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as “below” or “under” other elements or features would then be oriented as “above” or “above” other elements or features. Therefore, the term “below” can include both above and below orientations.

[0056] The terminology used herein is for the purpose of describing embodiments of this disclosure and is not intended to limit this disclosure.

[0057] Figure 1 A pouch-type secondary battery is illustrated schematically.

[0058] The pouch-type secondary battery includes an electrode assembly 10 and a pouch 20 for housing the electrode assembly 10.

[0059] The electrode assembly 10 includes a first electrode tab 14 and a second electrode tab 15, which can be electrically connected by soldering to corresponding external first terminal leads 16 and second terminal leads 17. Each of the first terminal leads 16 and second terminal leads 17 can be attached to (e.g., covered by) a tab film 18 to insulate it from the bag 20.

[0060] The bag 20 can be sealed by bringing its edge sealing portions 21 into contact with each other while housing the electrode assembly 10, and can also be sealed while the terminal sheet 18 is positioned between the sealing portions 21. The sealing portions 21 of the bag 20 can each be made of a thermoforming material that typically exhibits weak adhesion to metals. Therefore, by positioning the thin terminal sheet 18 between the sealing portions 21, the bag 20 can be sealed around the first terminal lead 16 and the second terminal lead 17.

[0061] Figure 2 Example of a cylindrical secondary battery. For example... Figure 2 As shown, the secondary battery includes an electrode assembly 30, a housing 39 that contains the electrode assembly 30 and an electrolyte therein, a cover assembly 50 connected to an opening in the housing 39 to seal the housing 39, and an insulating plate 37 located inside the housing 39 between the electrode assembly 30 and the cover assembly 50.

[0062] The electrode assembly 30 may include a diaphragm 30b, a first electrode 30c, and a second electrode 30a, and may be wound into an electrode core shape, with the first electrode 30c and the second electrode 30a positioned such that the diaphragm 30b is located between them.

[0063] The first electrode 30c includes a first substrate and a first active material layer on the first substrate. A first lead tab 35 can extend outward from a first uncoated portion of the first substrate where the first active material layer is not present, and the first lead tab 35 can be electrically connected to the cover assembly 50.

[0064] The second electrode 30a includes a second substrate and a second active material layer on the second substrate. A second lead tab 34 can extend outward from a second uncoated portion of the second substrate where the second active material layer is absent, and the second lead tab 34 can be electrically connected to the housing 39. The first lead tab 35 and the second lead tab 34 can extend in opposite directions.

[0065] The first electrode 30c can serve as a positive electrode. In such an embodiment, the first substrate can be made of, for example, aluminum foil, and the first active material layer can include, for example, a transition metal oxide. The second electrode 30a can serve as a negative electrode. In such an embodiment, the second substrate can be made of, for example, copper foil or nickel foil, and the second active material layer can include, for example, graphite.

[0066] The separator 30b prevents a short circuit between the first electrode 30c and the second electrode 30a, while allowing lithium ions to move between them. The separator 30b can be made of, for example, a polyethylene membrane, a polypropylene membrane, or a polyethylene-polypropylene membrane.

[0067] The housing 39 houses the electrode assembly 30 and, together with the cover assembly 50, forms the appearance of the secondary battery. The housing 39 may have a generally cylindrical body portion 39b and a bottom portion 39a connected to one side (e.g., one end) (or one side of the body portion 39b). An inwardly deformed rolled portion (e.g., a rolled section) 31 may be formed in the body portion 39b, and an inwardly bent crimped portion (e.g., a crimp) 33 may be formed at the open end of the body portion 39b.

[0068] The crimping portion 31 can reduce or prevent movement of the electrode assembly 30 within the housing 39 and can facilitate the placement of the gasket 32 ​​and the cover assembly 50. The crimping portion 33 can securely hold the cover assembly 50 by pressing the edge of the housing 39 against the gasket 32. The housing 39 can be formed of, for example, nickel-plated steel.

[0069] The cover assembly 50 can be secured to the inside of the crimp portion 33 via the gasket 32 ​​to seal the housing 39. The cover assembly 50 may include, but is not limited to, an upper cover 51, a safety vent 52, a lower cover 53, an insulating member, and a sub-plate 54, and may be modified in various ways.

[0070] The top cover 51 may be located at (or may form) the uppermost part of the cover assembly 50. The top cover 51 may include an upwardly projecting terminal portion for connection to an external circuit, and an outlet for venting gas may be arranged around the terminal portion.

[0071] The safety vent 52 may be located below the top cover 51. The safety vent 52 may include a downwardly projecting protrusion that is connected to the sub-plate 54, and at least one recess may be formed in the safety vent around the protrusion.

[0072] When gas is generated due to overcharging or abnormal operation of the secondary battery, the protrusion deforms upward due to pressure and separates from the subplate 54, while the safety vent 52 is cut (e.g., cracked or torn) along the notch. The cut safety vent 52 prevents the secondary battery from exploding by allowing gas to escape to the outside.

[0073] The lower cover 53 may be located below the safety vent 52. The lower cover 53 may have a first opening for exposing the safety vent 52 and a second opening for gas venting. An insulating member may be located between the safety vent 52 and the lower cover 53 to insulate the safety vent 52 and the lower cover 53.

[0074] Sub-plate 54 can be located below lower cover 53. Sub-plate 54 can be fixed to the lower surface of lower cover 53 to block the first opening in lower cover 53, and the protrusion of safety vent 53 can be fixed to sub-plate 54. First lead connector 35 extending from electrode assembly 30 can be fixed to sub-plate 54. Accordingly, upper cover 51, safety vent 52, lower cover 53 and sub-plate 54 can be electrically connected to the first electrode 30c of electrode assembly 30.

[0075] The insulating plate 37 can be positioned below the coiled portion 31 to contact the electrode assembly 30. The insulating plate 37 may have a tab opening through which a first lead tab 35 extends (or extends). A cover assembly 50 electrically connected to the first electrode 30c via the first lead tab 35 can face the electrode assembly 30, and the insulating plate 37 is positioned between the cover assembly 50 and the electrode assembly 30, and the cover assembly 50 can be kept insulated (e.g., electrically insulated) from the electrode assembly 30 by the insulating plate 37. Another insulating plate 36 may be included at the bottom of the electrode assembly 30 for insulation between the electrode assembly 30 and the bottom portion 39a of the housing 39.

[0076] Figure 3A This is a top perspective view of a prismatic secondary battery according to some embodiments of the present disclosure.

[0077] The housing 59 defines the overall appearance of the prismatic secondary battery and can be made of a conductive metal such as aluminum, aluminum alloy, or nickel-plated steel. Additionally, the housing 59 can provide (or may be formed) space for housing the electrode assembly therein.

[0078] The cover assembly 60 may include a cover plate 61 that covers an opening in the housing 59. In some embodiments, the housing 59 and the cover plate 61 may be made of a conductive material. A first terminal 62 and a second terminal 63 may be electrically connected to corresponding positive and negative electrodes (or negative and positive electrodes) inside the housing 59 and may be mounted to protrude outward through the cover plate 61.

[0079] Figure 3B It is according to some embodiments of this disclosure along Figure 3A The cross-sectional view taken from line I-I' in the diagram.

[0080] As shown, the prismatic secondary battery may include an electrode assembly 40, a first current collector 41, a first terminal 62, a second current collector 42, a second terminal 63, a housing 59, and a cover assembly 60.

[0081] Electrode assembly 40 can be formed by winding or stacking a first electrode plate, a diaphragm, and a second electrode plate into a thin sheet or film. When electrode assembly 40 is a wound stack, the winding axis can be parallel to the longitudinal direction of housing 59. In other embodiments, electrode assembly 40 is stacked rather than wound, but the shape of electrode assembly 40 is not limited in this disclosure. Alternatively, electrode assembly 40 can be a Z-stacked electrode assembly, wherein positive and negative electrode plates are inserted into opposite sides (e.g., opposite sides) of a diaphragm, and the diaphragm is then bent (or folded) into a Z-stack. Additionally, one or more electrode assemblies can be stacked such that the long sides of the electrode assemblies are adjacent to each other and housed in a housing, and the number of electrode assemblies in the housing is not limited in this disclosure. The first electrode plate of the electrode assembly can act as a negative electrode, and the second electrode plate can act as a positive electrode. Of course, the reverse is also possible.

[0082] The first electrode plate can be formed by coating a first electrode active material, such as graphite or carbon, onto a first electrode current collector formed of a metal foil, such as copper, copper alloy, nickel, or nickel alloy. The first electrode plate may include a first electrode tab (e.g., a first uncoated portion) 43, which is a region where the first electrode active material is not coated. The first electrode tab 43 can serve as a current flow path between the first electrode plate and the first current collector 41. In some embodiments, during the manufacture of the first electrode plate, the first electrode tab 43 is formed by pre-cutting it to protrude toward one side of the electrode assembly 40, or the first electrode tab 43 protrudes much further toward one side of the electrode assembly 40 than the diaphragm (e.g., protrudes further than or beyond the diaphragm) without being separately cut.

[0083] The second electrode plate can be formed by coating a second electrode active material, such as a transition metal oxide, onto a second electrode current collector formed of a metal foil such as aluminum or an aluminum alloy. The second electrode plate may include a second electrode tab (e.g., a second uncoated portion) 44, which is a region where the second electrode active material is not coated. The second electrode tab 44 can serve as a current flow path between the second electrode plate and the second current collector 42. In some embodiments, the second electrode tab 44 can be formed by pre-cutting it during the manufacture of the second electrode plate to protrude to the other side (e.g., the opposite side) of the electrode assembly, or the second electrode plate can protrude much further than the diaphragm to the other side of the electrode assembly (e.g., far beyond or beyond the diaphragm) without being separately cut.

[0084] The separator prevents or significantly reduces short circuits between the first and second electrodes while allowing lithium ions to move between them. The separator can be made of, for example, polyethylene membranes, polypropylene membranes, or polyethylene-polypropylene membranes.

[0085] In some embodiments, the electrode assembly 40 is housed together with the electrolyte in the housing 59.

[0086] In the electrode assembly 40, the first current collector 41 and the second current collector 42 can be welded and connected to the first electrode terminal block 43 extending from the first electrode plate and the second electrode terminal block 44 extending from the second electrode plate, respectively. As described above, in some embodiments where the first electrode terminal block 43 and the second electrode terminal block 44 are located on top of the electrode assembly 40, the first current collector and the second current collector can also be located on top of the electrode assembly 40.

[0087] like Figure 3BAs illustrated, the first current collector 41 and the second current collector 42 are respectively connected to the first terminal 62 and the second terminal 63 via connecting members 67. In some embodiments, the connecting members 67 may each have a threaded outer peripheral surface and can be tightened to the first terminal 62 and the second terminal 63 by screwing. However, this disclosure is not limited thereto. For example, the connecting members 67 may also be riveted or welded to the first terminal 62 and the second terminal 63.

[0088] In addition, Figure 3A and Figure 3B In this configuration, cover plate 61 may have an electrolyte inlet 64 formed to receive a sealing plug (or sealing pin) and a vent 66 with a notch 65. The vent 66 is used to discharge excess gas generated inside the secondary battery.

[0089] Figure 4 This is a perspective view of a secondary battery module in which 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 batteries 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 specific orientation and number to provide desired voltage and current specifications.

[0090] Figure 5 This is a perspective view of a battery pack 70 according to an embodiment of the present disclosure. Reference Figure 5 The battery pack 70 may include components to which each battery is electrically connected, and a housing that accommodates 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.

[0091] The battery pack 70 can be installed on (or in) a vehicle. The vehicle can be, for example, an electric vehicle, a hybrid vehicle, or a plug-in hybrid vehicle. The vehicle can be a four-wheeled vehicle or a two-wheeled vehicle, but is not limited thereto. Figure 6 The vehicle shown includes, on its lower body, a section of the vehicle. Figure 5 The battery pack 70 is shown in the figure. The vehicle can operate by receiving power from the battery pack 70 (e.g., it can be powered by receiving power from the battery pack 70).

[0092] In the formation process of secondary batteries, trays can be used. These trays are designed to stably support and transport the secondary battery cells based on their size, weight, and shape, and to withstand loads and impacts that may occur in various environments during the process. In other words, the trays are appropriately designed according to the size, weight, and shape (e.g., pouch-shaped, cylindrical, prismatic, etc.) of the secondary battery cells.

[0093] With the increase in high-capacity and high-weight battery cells, the strength and durability of trays used for secondary batteries are receiving more and more attention, and the possibility of tray deformation or damage is increasing due to continuous load, thermal changes and repeated movement that occur during tray use.

[0094] Therefore, the deformation of the pallet should be measured and evaluated regularly to maintain safety and reliability.

[0095] Figure 7 This is a flowchart describing the steps of a method for measuring the deformation of a tray for a secondary battery according to embodiments of the present disclosure.

[0096] As described above, the method for measuring the deformation of a tray for a secondary battery according to an embodiment of the present disclosure includes an operation S810 of fixing the tray, an operation S820 of moving the tray to a reference position, an operation S830 of measuring the displacement at multiple measurement points of the tray, and an operation S840 of calculating the deformation and evaluating the state of the tray by storing and analyzing the data of the measured displacement (i.e., the measured displacement data).

[0097] By using the pallet's displacement data to calculate the amount of deformation and analyzing the pallet's condition, it becomes possible to predict the timing of maintenance and replacement (e.g., its estimated time).

[0098] First, the pallet securing operation S810 is an operation that secures the pallet without shaking or tilting as it is being transported to the logistics frame. In this way, pallet errors caused by external factors during the measurement process can be minimized.

[0099] According to embodiments of this disclosure, pallet securing can be performed by a fastener that contacts the side surface of the pallet to prevent the pallet from wobbling and tilting.

[0100] The fastener contacts the side surface of the pallet to prevent wobbling and tilting, and can be configured to have (e.g., provide) an adjustable fixing force to allow the pallet to be stably held while rising or measuring displacement, and can provide structural flexibility that can be applied to pallets of various sizes.

[0101] Additionally, the fasteners can operate in conjunction with the lifting unit. The fasteners are designed to remain stationary and undisturbed even after the pallet has reached the reference position, and anti-friction materials can be applied to the surface of the fasteners to prevent damage to the pallet during the fastening process. For example, silicone pads or low-friction coatings can be attached to the contact surfaces of the fasteners to reduce friction with the pallet while ensuring stable fastening.

[0102] Additionally, the fasteners may include multiple retaining pins or clamps positioned along the side surface of the tray to apply constant pressure, thereby preventing the tray from wobbling during the measurement process. The operation of the fasteners is controlled by the system's controller, and an alarm can be generated to notify the user of the problem if the fastening is unstable or the tray is not properly secured.

[0103] In one embodiment, the retainer contacts and secures the tray to its side surface, preventing it from wobbling (or vibrating). For example, the retainer has a structure in which multiple retaining pins actuate to press the tray against its side surface, and the contact surfaces of the retaining pins are covered with silicone pads to provide friction while protecting the tray surface. When the lifting unit moves the tray to a reference position, the retainer holds the tray in a stable, fixed state and minimizes any external shocks or vibrations that may occur during displacement measurement. The retainer is adjustable according to the tray size, and the fixing pressure is monitored via sensors to prevent damage to the tray due to excessive pressure.

[0104] Accordingly, according to embodiments of this disclosure, by using fasteners to secure the pallet, swaying and tilting of the pallet are prevented during the measurement process, and a stable environment is provided where displacement data can be accurately measured. In this way, the accuracy of deformation measurement and data reliability are increased, and an effective assessment of the structural deformation state of the pallet is achieved (or made possible).

[0105] The operation S820 of moving the pallet to a reference position according to an embodiment of the present disclosure is performed by using a lifting unit located at the lower end of the pallet. The lifting unit includes a rack and pinion lifter and a support unit to move the pallet to the reference position and to the correct position while keeping the pallet horizontal. The reference position is an ideal state for measuring displacement.

[0106] According to embodiments of this disclosure, the reference position can be adjusted by using a lifting unit disposed below the tray.

[0107] The reference position is precisely and stably adjusted by moving the tray to a suitable location for measuring deformation using a lifting unit. This increases the accuracy of displacement measurements and ensures data reliability.

[0108] The reference position can be the optimal height or location for measuring the pallet's displacement, and is set (or determined or entered) using a lifting unit. The lifting unit is located at the lower end of the pallet and moves the pallet vertically. The lifting unit includes a rack and pinion mechanism and a support unit, and is configured to provide stability while moving the pallet to the desired position.

[0109] A rack and pinion lifter is a device that uses mechanical or electrical power to vertically move a pallet. It includes a fixed support column and a sliding structure that moves along the column, and sends a stop signal to the controller when the pallet reaches a reference position. A support unit distributes the load of the lifting unit while keeping the pallet level and prevents the pallet from tilting or swaying during movement.

[0110] The controller controls the lifting unit, and the reference position is preset by the user or the system. The reference position is set to a specific height suitable for measuring the pallet's displacement and can be flexibly adjusted according to the pallet's size and the measurement environment. Additionally, the lifting unit can be configured to detect the pallet's loading status to prevent damage due to excessive load.

[0111] In one embodiment, the lifting unit uses a rack and pinion lifter and a support unit to move the pallet to a reference position. The rack and pinion lifter is motor-driven and provides precision for adjusting the pallet in fine units (e.g., about 0.1 mm). The support unit stably supports the lower portion of the pallet and is controlled to keep the pallet level by association with a level (e.g., by including or referencing a level). The lifting unit may include a locking mechanism for stably holding the pallet after it reaches the reference position. For example, the lifting unit may include a vibration absorber to minimize pallet sway as the pallet moves to the reference position. These components allow for consistent performance to pallets of various sizes and under various load conditions.

[0112] Accordingly, according to embodiments of this disclosure, by using a lifting unit to adjust the reference position, the accuracy of pallet displacement measurement is increased, and the reliability of deformation analysis is ensured. Consequently, pallet condition assessment and maintenance planning can be performed more accurately and effectively.

[0113] According to embodiments of this disclosure, the operation S830 of measuring displacement at multiple measurement points of a pallet is performed using displacement sensors at locations where deformation may occur, such as the center and load concentration points on the pallet. The displacement sensors detect the displacement between the pallet and a reference distance at the measurement points in real time, and the measured displacement data is sent to a data processing unit. Data collection at multiple measurement points allows for analysis of the overall condition of the pallet.

[0114] According to embodiments of this disclosure, multiple measurement points may include the center of the tray and locations where load concentration and deformation may occur.

[0115] The center of the tray is the location where deformation may occur when the load is unevenly distributed, and a displacement sensor is set up to detect the deformation status of the center in real time.

[0116] The locations where load concentration and deformation may occur are determined based on the pallet's structural characteristics and load conditions. These locations typically correspond to the corners, bottom sections, or other specific points where the load is concentrated. Displacement sensors can be installed (or arranged) at these locations to measure localized deformation. Consequently, the overall deformation state can be analyzed in more detail. The displacement sensors collect distance data at each point in real time, and the collected data is sent to a data processing unit for calculation of the deformation.

[0117] The number and location of measurement points can be adjusted according to the pallet's size and structural characteristics. For example, five or more measurement points can be set, including the center and load concentration points, and the distance between the measurement points can be designed to uniformly assess the pallet's deformation. The arrangement of measurement points increases data accuracy and allows for detailed analysis of potential deformation locations.

[0118] In one embodiment, the multiple measurement points include a total of five displacement sensors positioned at the center and corners of the tray. The sensor positioned at the center accurately measures the amount of structural deformation of the tray, while the sensors positioned at the corners detect the amount of localized deformation caused by load concentration.

[0119] In addition, multiple measurement points can include a total of five displacement sensors set at the center of the pallet and at the 1 / 4 horizontal and vertical points. The 1 / 4 points are the area surrounding the center of the pallet and are suitable for measuring local deformation and analyzing the deformation state of the outer part of the pallet and the entire pallet.

[0120] This sensor arrangement allows for the synchronous (or simultaneous) evaluation of the overall and local conditions of the pallet. Each displacement sensor detects the displacement between the pallet and a reference distance in real time and sends the displacement data to a data processing unit, which analyzes the displacement data and calculates the deformation state of the pallet.

[0121] Accordingly, according to embodiments of this disclosure, by setting multiple measurement points at the center and at locations where load concentration and deformation may occur, the overall deformation state and local deformation of the pallet can be accurately measured. Consequently, the accuracy and reliability of the condition assessment are increased, and higher accuracy is provided for pallet maintenance planning.

[0122] According to embodiments of this disclosure, the operation S840 of storing and analyzing measured displacement data to calculate deformation and assess the condition of the pallet is performed by a data processing unit. The data processing unit compares the displacement data with a reference distance to calculate the deformation, thereby analyzing the deformation state of the pallet. The analysis results are used for pallet condition assessment and lifespan prediction, and are reflected in maintenance or replacement plans. The data processing unit is configured to obtain long-term deformation trends based on the stored data.

[0123] According to embodiments of this disclosure, the amount of deformation is calculated by comparing the measured displacement data with a reference distance, and a warning for repair or replacement is generated when the amount of deformation exceeds the reference value.

[0124] When the deformation exceeds the reference value, a warning is generated for repair or replacement, allowing for early maintenance. This ensures the safety and efficiency of the pallet.

[0125] The deformation is calculated by comparing displacement data with a reference distance. The displacement data are values ​​detected in real time at multiple measurement points on the pallet using displacement sensors, and the reference distance is defined as reference data measured on the pallet in a normal state. The data processing unit collects the displacement data, compares it with the reference distance, and calculates the deformation based on the comparison results. The deformation is analyzed by including not only local values ​​at specific points but also the average deformation of the entire pallet.

[0126] When the deformation exceeds a reference value, a warning is generated. Warning generation can be performed via a data processing unit and a warning generation module. The warning generation module compares the deformation data with the reference value to determine if the deformation exceeds the reference value, and when the deformation exceeds the reference value, notifies the administrator of the determination via a visual warning (e.g., a display or LED) or an audible warning (e.g., an alarm). This process is linked to the management system to store warning data in real time and allow the warning data to be reflected in the maintenance work plan.

[0127] According to embodiments of this disclosure, reference values ​​are set based on the usage environment, pallet size, and load conditions. For example, a typical reference value might be set to a deformation of approximately ±0.5 mm, and when the deformation exceeds the reference value, data at the corresponding point is further analyzed to determine the need for maintenance or replacement. The function of generating warnings may include notifying users of values ​​exceeding the reference value, and may also include additional functionality that suggests optimal maintenance strategies based on data.

[0128] In one embodiment, a displacement sensor collects data at the center of the tray and five measurement points with a high probability of deformation. The collected displacement data is recorded with an accuracy of, for example, approximately 0.01 mm, and the amount of deformation is calculated by comparing this displacement data to a reference distance. For example, when the deformation at a specific point exceeds the reference distance by as much as approximately 0.6 mm, a warning generation module detects this and activates a visual warning. The warning data is stored in the management system, and the maintenance team can access the warning data to check the status of the tray and perform necessary tasks. In other embodiments, the management system can generate signals to move or unload the tray, which is the target of the warning, to a specific area and send commands to a programmable logic controller (PLC) or similar device to automatically move or unload the tray. The warning can also be linked to a predictive analytics module to assess the likelihood of future deformation and adjust the replacement cycle.

[0129] Accordingly, according to embodiments of this disclosure, the deformation is calculated by comparing displacement data with a reference distance, and a warning is generated when the deformation exceeds the reference value. This allows for accurate assessment of the pallet's deformation status and efficient maintenance. Consequently, the pallet's safety and reliability can be ensured, and maintenance costs and working time can be reduced.

[0130] According to embodiments of this disclosure, warnings can be sent to the management system and reflected in the maintenance plan. Accordingly, this provides the effect of automating maintenance strategies and maximizing management efficiency by integrating pallet deformation status data into the management system in real time.

[0131] Warnings are generated in the warning generation module connected to the data processing unit. The warning generation module detects when the deformation exceeds a reference value, generates warning data, and sends it to the management system. The warning data includes detailed information about the pallet's deformation status, the point of excess, and the amount of deformation exceeded, and is used to establish a maintenance plan in the management system.

[0132] The management system determines maintenance schedules, replacement cycles, and work priorities based on (or according to) warning data. The system stores data on a central server and automatically sends notifications to the maintenance team. Notifications can be provided via email, mobile phone notifications, or management software. The system also stores warning data for extended periods, analyzes deformation trends, and predicts the expected lifespan of the pallets.

[0133] Warning data is integrated into the management system in real time, and the system automatically suggests appropriate actions based on this data. For example, based on the frequency and severity of warnings, specific trays can be prioritized for replacement, or additional maintenance schedules can be generated.

[0134] In one embodiment, the management system collects pallet deformation data in real time and stores warning data when the deformation exceeds a reference value. For example, when the deformation at the center of a particular pallet is measured to be approximately 0.8 mm (exceeding a reference value of approximately ±0.5 mm), the warning generation module sends the data, including the excess information, to the management system. Based on (e.g., according to) this data, the management system sends a mobile phone notification to the maintenance team and prioritizes the corresponding pallet in the inspection schedule. The warning data is stored in a central server and then used in analysis, allowing managers to identify pallet deformation trends and optimize maintenance plans.

[0135] Accordingly, according to embodiments of this disclosure, warning data is sent to the management system and reflected in the maintenance plan, enabling the deformation data to be integrated and managed in real time. This provides the benefits of effectively assessing the deformation status of the pallet, automating and optimizing maintenance work, reducing maintenance costs and time consumption, and maximizing management efficiency.

[0136] According to embodiments of this disclosure, the measured displacement data can be stored and analyzed over a long period of time, and used to predict the expected lifespan of the pallet and establish maintenance plans. Accordingly, this provides the effect of continuously monitoring the pallet's condition and proactively optimizing maintenance strategies.

[0137] Displacement data is collected at multiple measurement points using displacement sensors, sent to a data processing unit, and stored there. The data processing unit compares the collected displacement data with a reference distance, calculates the deformation, and stores the deformation in a database over a long period. This long-term stored data is used to analyze the pallet's deformation trend. The data records changes in displacement and deformation over time, and the expected lifespan is calculated based on the rate and pattern of deformation increase.

[0138] The expected lifespan is predicted by combining pallet displacement data, load conditions, usage frequency, and environmental conditions (temperature, humidity, etc.). The data processing unit integrates and analyzes these conditions to quantitatively assess the pallet's lifespan and provides this information to the management system, enabling maintenance or replacement to be performed before the end of its lifespan. Expected lifespan predictions can be performed individually on single pallets and multiple pallets, allowing for effective control of the overall system's maintenance schedule.

[0139] Maintenance plans are established based on expected lifespan data. The management system automatically generates replacement cycles, inspection schedules, and maintenance resource allocations based on expected lifespan. This automatic generation can be dynamically adjusted to reflect real-time updates of displacement data. Furthermore, maintenance plans are linked to warning data to prioritize pallets and support efficient resource utilization.

[0140] As an example, displacement is measured in units of, for example, 0.01 mm, at the center of the pallet and the load concentration point using displacement sensors. The data processing unit compares the displacement data with a reference distance, calculates the deformation, and stores the deformation in a database. The stored displacement data is updated daily, and when the pallet's deformation exhibits a pattern of increasing by up to approximately 0.2 mm per month, the data processing unit analyzes the pattern and calculates the pallet's expected lifespan, which is assessed to be, for example, six months. The management system plans replacement work five months later based on the expected lifespan data and automatically sets a pre-replacement inspection schedule. During this process, the plan is optimized by reflecting the pallet's usage environment (e.g., increased deformation or an expected faster rate of increase when humidity is high).

[0141] According to embodiments of this disclosure, by storing and analyzing measured displacement data over a long period, the expected lifespan of a pallet can be quantitatively predicted, and maintenance plans can be effectively established. Accordingly, this provides the effect of continuously monitoring the pallet's status, reducing unnecessary maintenance, and optimizing replacement time, thereby reducing management costs and operating time.

[0142] In a process where the pallet, which is secured by contacting the side surface of the contact tray to prevent it from wobbling and moving to a reference position, the method for measuring the deformation of a pallet for secondary batteries according to embodiments of this disclosure performs precise position adjustment while maintaining the pallet horizontally using a lifting unit including a rack and pinion lifter and a support unit. Displacement sensors are positioned at the center of the pallet and the load concentration point, and the distance between the sensors is set to allow accurate assessment of the deformation state at each point. A data processing unit collects displacement data, calculates the difference from the reference distance, and obtains the deformation amount. When the deformation amount exceeds the reference value, warning data is sent to the management system and a maintenance plan is automatically established.

[0143] Accordingly, according to embodiments of this disclosure, the method for measuring the deformation of a tray for secondary batteries enables more accurate calculation of the tray's deformation, assessment of the tray's condition based on the deformation, lifespan prediction, and the establishment of maintenance plans. Consequently, it provides the effect of increasing the tray's utilization efficiency and minimizing product damage and accidents caused by deformation.

[0144] Figure 8 This is a diagram illustrating an apparatus for measuring the deformation of a tray for a secondary battery according to another embodiment of the present disclosure. Some repeating parts and configurations in the embodiments described above may not be described again or will only be briefly described.

[0145] refer to Figure 8The system for measuring the deformation of the pallet 80 includes a fastener 100 for fixing the pallet 80, a lifting unit 200 for moving the pallet 80 to a reference position, a displacement sensor 300 for detecting displacement at multiple measurement points of the pallet 80, a data processing unit 400 for storing and analyzing the measured displacement data to calculate the deformation and evaluate the state of the pallet 80, and a controller 500 for controlling the operation of the fastener 100, the lifting unit 200, the displacement sensor 300, and the data processing unit 400.

[0146] The device for measuring the deformation of pallet 80 includes a fixture 100, a lifting unit 200, a displacement sensor 300, a data processing unit 400, and a controller 500. It collects, stores, and analyzes the displacement data of pallet 80 to calculate the deformation and assess the condition of pallet 80. Furthermore, by integrating the operation of all components through the controller 500, the accuracy and efficiency of the system are increased.

[0147] First, according to embodiments of this disclosure, the fastener 100 secures the tray 80 and prevents it from wobbling and tilting. The fastener 100 contacts the side surface of the tray 80 to stably support the tray 80 and provides a retaining force to prevent the tray 80 from moving during measurement. The fastener 100 may be attached with a silicone pad or a low-friction material to minimize friction and can be adjusted according to the size of the tray 80.

[0148] According to an embodiment of this disclosure, the lifting unit 200 moves the pallet 80 to a reference position. The lifting unit 200 is disposed below the pallet 80 and includes a rack and pinion lifter 220 and a support unit 240 (see, for example...). Figure 10 The rack and pinion lifter 220 moves the pallet 80 vertically using a motor, and the support unit 240 helps keep the pallet 80 level. The lifting unit 200 moves the pallet 80 precisely to a reference position and holds the pallet 80 level to ensure the accuracy of displacement measurements.

[0149] According to an embodiment of the present disclosure, the lifting unit 200 may include a rack and pinion lifter 220 and a support unit 240. The rack and pinion lifter 220 is disposed below the pallet 80 and lifts and lowers the pallet 80, while the support unit 240 supports the pallet 80 to keep it horizontal.

[0150] The lifting unit 200 moves the pallet 80 to a reference position, and the rack and pinion lifter 220 moves the pallet 80 vertically and is configured to move the pallet 80 accurately to the reference position by means of a motor. The rack and pinion lifter 220 has a structure that takes into account strength and stability, and can operate without deformation even after long-term use.

[0151] Support unit 240 helps allow pallet 80 to remain level during lifting. Support unit 240 stably supports the lower portion of pallet 80 and includes a level to monitor the tilt of pallet 80 in real time. Support unit 240 cooperates with rack and pinion lifter 220 to keep pallet 80 from wobbling and provides an environment for accurate operation of displacement sensor 300.

[0152] Furthermore, the lifting unit 200 can operate flexibly according to the load condition and size of the pallet 80. The rack and pinion lifter 220 raises and lowers the pallet 80 at a constant speed, and the support unit 240 minimizes the risk of deformation of the pallet 80 through load distribution. The lifting unit 200 can be operated in conjunction with the controller 500.

[0153] According to embodiments of this disclosure, displacement sensor 300 detects displacement at multiple measurement points on pallet 80. Displacement sensor 300 is positioned at the center, corners, and load concentration points of pallet 80 to measure the displacement of pallet 80 relative to a reference distance in real time.

[0154] As displacement sensor 300, according to embodiments of this disclosure, a linear variable differential transformer (LVDT) sensor can be used to measure minute displacements between the tray 80 and a reference position. The LVDT sensor can measure displacements at a total of five points: the center of the tray 80 and at the 1 / 4 point in the horizontal and vertical directions. This is to analyze the deformation state of the tray 80 in a balanced manner.

[0155] According to embodiments of this disclosure, multiple measurement points may include the center of the tray 80 and locations where load concentration and deformation may occur.

[0156] Measurement points are set at the center of the tray 80 and at locations where deformation may occur. The center is the location used to accurately analyze the structural deformation of the tray 80, and a displacement sensor 300 is set to assess overall stability. The displacement sensor 300 accurately detects the center displacement of the tray 80 and sends the center displacement to the data processing unit 400.

[0157] Locations where load concentration and deformation may occur include corners or points where specific loads are concentrated. These points play an important role in detecting localized deformation of the pallet 80 and increasing the accuracy and reliability of the data. The number and location of measurement points can be adjusted according to the size and structural characteristics of the pallet 80.

[0158] According to embodiments of this disclosure, displacement sensors 300 positioned at multiple measurement points collect data in real time and are used to calculate deformation. This arrangement accurately analyzes the overall deformation state of the pallet 80 and provides the data needed to develop maintenance plans.

[0159] According to an embodiment of this disclosure, a displacement sensor 300 is disposed at a plurality of measuring points on a tray 80, and at each point the displacement of the tray 80 relative to a reference distance is measured.

[0160] Displacement sensors 300 are positioned at multiple measurement points on the pallet 80 to measure displacement. Each displacement sensor 300 detects the displacement of the pallet 80 relative to a reference distance at a fixed position, which allows for the calculation of deformation and assessment of the condition of the pallet 80.

[0161] A displacement sensor 300 positioned at the center is configured to analyze the overall deformation state, while displacement sensors 300 installed at locations where load concentration and deformation may occur detect localized deformation. The displacement sensors 300 monitor the structural state of the tray 80 in real time and send the data to the data processing unit 400.

[0162] According to embodiments of this disclosure, the data processing unit 400 stores and analyzes displacement data to calculate deformation, and evaluates the condition of the pallet 80 based on the deformation. The data processing unit 400 calculates the deformation by comparing the displacement data with a reference distance, and analyzes the overall and local deformation state of the pallet 80 based on the deformation. The stored data is used for long-term condition analysis and expected life prediction.

[0163] According to an embodiment of this disclosure, the data processing unit 400 compares the measured displacement data with a reference distance to calculate the deformation, and when the deformation exceeds the reference value, the data processing unit 400 generates a warning for maintenance or replacement.

[0164] The data processing unit 400 compares the data collected from the displacement sensor 300 with a reference distance and calculates the deformation. When the deformation exceeds the reference value, the data processing unit 400 generates a warning, thus allowing the condition of the pallet 80 to be assessed and appropriate maintenance to be performed.

[0165] Warnings are generated by analyzing deformation data exceeding reference values, and can be provided in the form of visual or auditory notifications. The data processing unit 400 sends the warning data to the management system 600 to support maintenance work.

[0166] As described above, the data processing unit 400 processes displacement data in real time and evaluates the deformation state by comparing the displacement data with a reference distance. Accordingly, the state of the pallet 80 can be continuously monitored.

[0167] According to embodiments of this disclosure, warnings can be sent to a management system (e.g., an internal management system) 600 and reflected in the maintenance plan. The management system 600 sets replacement cycles, inspection schedules, and work priorities based on (e.g., according to) the warning data.

[0168] The management system 600 stores warning data in a central server, thereby automating and optimizing maintenance work. Warning data is also used to analyze trends in the status of the system tray 80.

[0169] Warning data is sent to the maintenance team in real time. Consequently, work efficiency and reliability can be increased, and the management system 600 can accurately assess the status of tray 80 and adjust maintenance plans based on warning data.

[0170] According to embodiments of this disclosure, the data processing unit 400 can predict the expected lifespan of the tray 80 and suggest maintenance times based on measured displacement data.

[0171] The data processing unit 400 analyzes displacement data to predict the expected lifespan of the pallet 80. The data processing unit 400 stores and analyzes collected data over a long period, assesses the condition of the pallet 80, and calculates its lifespan. The expected lifespan is calculated based on displacement data, load conditions, and the usage environment. The data processing unit 400 can use this data to suggest maintenance points and automatically generate replacement cycles and inspection schedules. The data processing unit 400 connects to the management system 600 to provide expected lifespan data and can effectively establish maintenance plans based on this data.

[0172] According to embodiments of this disclosure, the controller 500 comprehensively controls the operation of the fixing member 100, the lifting unit 200, the displacement sensor 300, and the data processing unit 400. The controller 500 synchronizes the operation of each component and processes data generated during measurement in real time. Furthermore, when the tray 80 fails to reach the reference position or the displacement sensor 300 detects an error, the controller 500 generates a warning to stably maintain system operation. The controller 500 is configured to connect to the management system 600 to centralize and process all data.

[0173] According to an embodiment of this disclosure, the controller 500 can synchronize the movement of the reference position of the tray 80 with the data collection of the displacement sensor 300 (i.e., through the measurement of the displacement sensor 300) and send the data to the data processing unit 400 in real time.

[0174] The controller 500 controls the movement of the reference position of the pallet 80 and interacts with the lifting unit 200 to move the pallet 80 accurately to the reference position. The controller 500 controls the operation of the rack and pinion lifter 220 and the support unit 240 to help the pallet 80 move stably without wobbling, and generates a warning when the position is not accurately set (or reached).

[0175] In addition, the controller 500 controls the data collection of the displacement sensor 300 in real time. When the displacement sensor 300 detects displacement at the measurement point, the controller 500 monitors the operating status of the displacement sensor 300 and performs synchronization to allow accurate collection of data from all displacement sensors 300. Synchronized data is collected without time loss or delay to ensure data reliability.

[0176] Additionally, the controller 500 transmits data to the data processing unit 400 in real time. The data transmission process is performed using a wired or wireless network, and the displacement data is analyzed in the data processing unit 400 and used to calculate the deformation. The controller 500 maintains the stability of the data transmission and assesses the condition of the pallet 80, and supports maintenance planning in conjunction with the data processing unit 400. The controller 500 can be connected to a management system to help reflect data throughout the maintenance process.

[0177] As described above, the device for measuring the deformation of a tray 80 for secondary batteries according to embodiments of this disclosure can accurately calculate the deformation by collecting, storing, and analyzing displacement data of the tray 80 in real time via a fixing member 100, a lifting unit 200, a displacement sensor 300, a data processing unit 400, and a controller 500. Accordingly, the condition of the tray 80 can be effectively assessed, and the accuracy and efficiency of maintenance work can be increased.

[0178] Figure 9 This is a flowchart describing the steps of a method for measuring the deformation of a tray for a secondary battery according to another embodiment of the present disclosure. Some repeated parts and configurations in the embodiments described above may not be described again or may only be briefly described.

[0179] refer to Figure 9 According to embodiments of this disclosure, a method for measuring the deformation of a tray for a secondary battery includes: fixing the tray (S910), moving the tray to a reference position (S920), measuring the displacement at multiple measurement points of the tray in real time (S930), calculating the deformation by comparing the measured displacement data with a reference distance (S940), generating a warning when the calculated deformation exceeds a reference value (S950), and predicting the expected lifespan of the tray based on the deformation (S960).

[0180] According to embodiments of this disclosure, a method for measuring the deformation of a tray for secondary batteries involves fixing the tray, moving the tray to a reference position, measuring the displacement at multiple measurement points in real time, calculating the deformation based on the displacement, and generating a warning when the deformation exceeds a reference value. Furthermore, by analyzing the deformation data to predict the expected lifespan of the tray, an optimized maintenance plan is provided.

[0181] First, the pallet is secured using a fastener (S910) to allow the pallet to be held stably during measurement without wobbling or tilting. The fastener contacts the side surface of the pallet to stably support it and provides a retaining force to prevent the pallet from moving during measurement. The fastener is adjustable according to the size and shape of the pallet and is made of a wear-resistant material.

[0182] In addition, the operation S920 of moving the pallet to the reference position is performed by using the lifting unit under the pallet.

[0183] The reference position is (for example, set as) the optimal position for accurately measuring the pallet's displacement by moving the pallet to a reference (or preset or predetermined) position to increase the accuracy of the measurement, and is adjusted by using a lifting unit located below the pallet. The lifting unit includes a rack and pinion lifter for moving the pallet in the vertical direction and a support unit for keeping the pallet horizontal.

[0184] The lifting unit receives operating commands from the controller to move the pallet to the reference position and prevents the pallet from swaying or tilting during the movement. A rack and pinion lifter moves the pallet at a constant speed, and the support unit keeps the pallet continuously level, thus ensuring the reliability of the displacement measurement process.

[0185] In addition, operation S930 performs real-time measurement of displacement at multiple measurement points using displacement sensors. The displacement sensors are positioned at the center of the tray and at locations where deformation may occur, and collect measurement data in real time, sending the measured data to the data processing unit.

[0186] According to embodiments of this disclosure, displacement measurement can be performed using multiple displacement sensors located at the center of the tray and at locations where deformation may occur.

[0187] Displacement sensors are positioned at the center of the pallet and at structurally weak points (e.g., load concentration points) to collect displacement data in real time. The displacement sensors detect the displacement of the pallet relative to a reference distance at fixed (e.g., preset or predetermined) positions.

[0188] The displacement sensor analyzes the displacement at the center of the tray to assess the overall condition and detects local deformation by measuring the displacement at the load concentration point. The displacement sensor sends data to the data processing unit through real-time data collection.

[0189] The placement of multiple displacement sensors can be adjusted according to the size and structural characteristics of the pallet. Data collected at the measurement points is sent to a data processing unit, compared with a reference distance, and used to calculate deformation and assess the condition of the pallet.

[0190] Then, operation S950 is performed in the data processing unit to calculate the deformation by comparing the measured displacement data with a reference distance. The data processing unit stores and analyzes the displacement data and calculates the deformation by comparing the displacement data with a reference distance. During this process, if the deformation exceeds the reference value, a warning for maintenance or replacement is generated. The warning data is sent to the management system and reflected in the maintenance plan.

[0191] According to embodiments of this disclosure, the operation of calculating the deformation may include calculating the overall deformation of the pallet by integrating displacement data acquired at multiple measurement points and further analyzing the local deformation at specific locations.

[0192] Displacement data acquired at multiple measurement points is integrated by the data processing unit. Displacement data is collected in real time at the center of the pallet and at areas where deformation may occur, and the data processing unit integrates this data to calculate the overall deformation of the pallet. The integration process of displacement data involves arranging the data in chronological order, summing the data from each measurement point, and analyzing the overall deformation state of the pallet.

[0193] In calculating deformation, the local deformation at specific locations is also analyzed. These specific locations are defined as points of concentrated load or structural weakness, and the deformation at these locations provides crucial information for early detection of local structural problems. Local deformation analysis compares data from measured points and analyzes whether displacement increases sharply or exhibits abnormal changes at specific points to assess the likelihood of structural defects.

[0194] The data processing unit comprehensively assesses the pallet's condition by integrating overall deformation calculations and local deformation analyses. The calculated data is sent to the management system and reflected in the maintenance plan, and the analysis results are provided in the form of visual reports, allowing staff to easily determine the pallet's condition.

[0195] In one embodiment, displacement sensors positioned at the center and four corners of the pallet measure displacement at each point in real time. The collected displacement data is sent to a data processing unit, which integrates all the data to calculate the overall deformation of the pallet. For example, structural weaknesses can be detected by further analyzing local deformation at specific corners where the deformation exceeds a reference value. This data is used to develop a maintenance plan, enabling the effective execution of reinforcement or pallet replacement work in specific sections.

[0196] The data processing unit performs the operation S960, which predicts the expected lifespan of the pallet based on deformation, using its analysis function. The expected lifespan is calculated based on long-term stored deformation data, the usage environment, and load conditions. The data processing unit calculates the expected lifespan, provides it to the management system, and automatically suggests maintenance intervals.

[0197] According to embodiments of this disclosure, the operation of predicting expected lifespan can predict the service life of a pallet by combining deformation data (i.e., data on deformation) and environmental conditions.

[0198] Deformation data is calculated by comparing displacement data collected in real time at multiple measurement points with a reference distance, and comprehensively reflects the overall deformation state and local deformation of the pallet. This data is used to assess the current condition of the pallet and predict the rate of increase in deformation.

[0199] Environmental conditions are external factors that expose pallets and include factors such as temperature, humidity, and load variations. Environmental conditions are important variables affecting the pallet's deformation rate and service life, and this data is combined with deformation data to form a predictive model. The data processing unit comprehensively analyzes deformation data and environmental condition data to calculate the pallet's expected lifespan. Environmental conditions are collected in real time via sensors and weighted to improve prediction accuracy.

[0200] For example, the data processing unit combines deformation data with temperature and humidity conditions to calculate the pallet's expected lifespan. For instance, when the temperature is approximately 40°C and the rate of increase in deformation exceeds a threshold, the data processing unit calculates the pallet's expected lifespan to be six months and generates a notification to the management system. Based on the expected lifespan, managers can adjust maintenance plans to effectively schedule pallet replacement or reinforcement.

[0201] Accordingly, according to embodiments of this disclosure, a method for measuring the deformation of a tray for secondary batteries involves fixing the tray, moving the tray to a reference position, measuring the displacement at multiple measurement points in real time, accurately calculating the deformation, and predicting the expected lifespan. This provides the advantages of accurately assessing the condition of the tray, efficiently performing maintenance, and reducing management costs and time.

[0202] Figure 10 This is a configuration diagram of components of a system for measuring the deformation of a tray for a secondary battery, according to an embodiment of the present disclosure.

[0203] refer to Figure 10 The tray 80 for secondary batteries is conveyed to a position above the logistics frame 90 and stably secured by the fastener 100. The fastener 100 prevents the tray 80 from wobbling and tilting, thereby ensuring the accuracy of the deformation measurement process. The tray 80 is moved to a reference position using a lifting unit 200, which includes a rack and pinion lifter 220 and a support unit 240, and the height of the tray 80 is adjusted to keep the tray 80 level.

[0204] Displacement sensors 300 are positioned at the center of the tray 80 and at multiple measurement points where load concentration and deformation may occur. The displacement sensors 300 are configured as LVDT sensors and measure the displacement of the tray 80 relative to a reference distance in real time at each point. The measured displacement data is sent to the data processing unit 400 for analysis, and the amount of deformation is calculated by comparing the measured displacement data with the reference distance.

[0205] The logistics frame 90 supports the entire system and stably holds components such as the fastener 100, lifting unit 200, and displacement sensor 300. The frame 90 is designed to prevent the pallet 80 from wobbling at the reference position, thereby providing stability during the deformation measurement process.

[0206] Figure 11 This is a diagram illustrating the arrangement of multiple measuring points and displacement sensors for measuring the deformation of a tray for a secondary battery according to an embodiment of the present disclosure.

[0207] refer to Figure 11 Multiple measuring points 320 include (or correspond to) the center of the tray 80 and 1 / 4 horizontal and vertical points, and a total of five displacement sensors 300 are set to measure displacement. This arrangement is designed to accurately measure displacement at points where load concentration and deformation of the tray 80 may occur.

[0208] Furthermore, according to embodiments of this disclosure, the method can be implemented in the form of program commands that can be executed by various computer devices and recorded on a computer-readable medium.

[0209] Computer-readable media may include program commands, data files, data structures, etc., individually or in combination. Program commands recorded on a computer-readable medium may be specifically designed and configured for embodiments of this disclosure, or may be 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 commands. For example, a computer-readable recording medium may include magnetic media such as hard disks, floppy disks, and magnetic tapes; optical recording media such as optical disc read-only memories (CD-ROMs) and digital versatile discs (DVDs); and magneto-optical media such as optical-magnetic floppy disks, ROMs, RAMs, and flash memory. Program commands may include machine language code generated by a compiler and high-level language code executable by a computer using an interpreter, etc.

[0210] According to embodiments of this disclosure, a method and apparatus for measuring the deformation of a tray are provided, which can measure the deformation of a tray for a secondary battery and analyze the deformation to assess the condition of the tray.

[0211] According to embodiments of this disclosure, by measuring the deformation of the tray used for secondary batteries, the deformation of the tray can be detected in advance so that maintenance can be performed in a timely manner, and accidents such as damage to battery cells and fires can be prevented.

[0212] Although the present disclosure has been described above with reference to embodiments thereof, the present disclosure is not limited thereto. Various modifications and variations may be made by those skilled in the art within the spirit of the present disclosure as defined by the appended claims and their equivalents.

Claims

1. A method for measuring the deformation of a tray for a secondary battery, the method comprising: The tray is fixed for the secondary battery; Move the tray to the reference position; Measure the displacement at multiple measurement points on the tray; as well as The measured displacement data are stored and analyzed to calculate the deformation and assess the condition of the pallet.

2. The method of claim 1, wherein securing the pallet is performed by a fastener that contacts the side surface of the pallet, the fastener preventing the pallet from wobbling and tilting.

3. The method according to claim 1, wherein the reference position is adjusted by using a lifting unit under the tray.

4. The method of claim 1, wherein the plurality of measuring points includes the center of the tray and locations around the center of the tray.

5. The method of claim 1, further comprising calculating the deformation by comparing the data of the measured displacement with a reference distance, and generating a warning for maintenance or replacement when the deformation exceeds a reference value.

6. The method of claim 5, wherein the warning is sent to the management system and reflected in the maintenance plan.

7. The method according to any one of claims 1 to 6, wherein the data of the measured displacement is stored and used to predict the expected life of the pallet and to establish a maintenance plan.

8. An apparatus for measuring the deformation of a tray for a secondary battery, the apparatus comprising: A fastener is configured to secure the tray for the secondary battery; A lifting unit is configured to move the tray to a reference position; A displacement sensor is configured to measure displacement at multiple measurement points on the tray; A data processing unit is configured to store and analyze the measured displacement data to calculate the deformation and evaluate the condition of the pallet; as well as The controller is configured to control the operation of the fixture, the lifting unit, the displacement sensor, and the data processing unit.

9. The device according to claim 8, wherein the lifting unit comprises: A rack and pinion lifter is located below the pallet and is configured to lift the pallet. as well as A support unit is configured to support the tray and keep the tray in a horizontal position.

10. The device of claim 8, wherein the plurality of measuring points includes the center of the tray and locations around the center of the tray.

11. The device of claim 8, wherein the displacement sensor is located at the plurality of measurement points and measures the displacement between the tray and a reference distance at each of the plurality of measurement points.

12. The device of claim 8, wherein the data processing unit is configured to compare the data of the measured displacement with a reference distance to calculate the deformation, and when the deformation exceeds a reference value, the data processing unit generates a warning for maintenance or replacement.

13. The device of claim 12, wherein the warning is sent to an internal management system and reflected in a maintenance plan.

14. The apparatus of claim 8, wherein the data processing unit is configured to predict the expected lifespan of the tray based on the data of the measured displacement, and to generate maintenance times.

15. The device according to any one of claims 8 to 14, wherein the controller is configured to synchronize the movement of the reference position of the tray with the measurement by the displacement sensor, and to transmit the data to the data processing unit in real time.

16. A method for measuring the deformation of a tray for a secondary battery, the method comprising: The tray is fixed for the secondary battery; Move the tray to the reference position; Real-time measurement of displacement at multiple measurement points on the tray; The deformation is calculated by comparing the measured displacement data with a reference distance; A warning is generated when the calculated deformation exceeds the reference value; as well as The expected lifespan of the pallet is predicted based on the amount of deformation.

17. The method of claim 16, wherein the reference position is adjusted by using a lifting unit below the tray.

18. The method of claim 16, wherein the measurement of the displacement is performed by using a plurality of displacement sensors located at the center of the tray and around the center of the tray.

19. The method of claim 16, wherein calculating the deformation includes: The overall deformation of the pallet is calculated by integrating the displacement data obtained at the plurality of measurement points and further analyzing the local deformation at measurement points other than the center of the pallet.

20. The method of any one of claims 16 to 19, wherein the prediction of the expected lifespan is made by combining data on the amount of deformation and environmental conditions to predict the service life of the pallet.

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