Sheet application device

Abstract

A sheet application device is provided. One embodiment of the sheet application device includes a fixing part consisting of two parts configured such that both side regions of a barrier sheet are each secured, and a lifting part provided between the two parts of the fixing part, to which the central region of the barrier sheet is secured, the lifting part can guide the bending of the barrier sheet so as to cover at least both sides of the battery module by descending in response to the securing of the battery module. Other embodiments are possible.

Description

Technical Field

[0001] The present invention relates to a sheet pasting device. More specifically, it relates to a sheet pasting device capable of effectively pasting a flame retardant / insulating sheet on the outer peripheral surface of a battery module.

Background Art

[0002] A lithium secondary battery is a battery that stores and produces electrical energy through the insertion (intercalation) and deintercalation of lithium ions at the positive and negative electrodes. Since lithium secondary batteries have excellent storage capacity, voltage, and life characteristics, they can be used as batteries for not only notebook computers and smartphones but also electric vehicles.

[0003] Generally, lithium secondary batteries are often configured in a form where a large number of battery cells are electrically connected in series and / or in parallel to each other. In particular, a large number of battery cells can be housed inside a single module case in an electrically connected state to form a single battery module. And the battery module can be used alone or two or more can be electrically connected in series and / or in parallel to each other to form a higher-level device such as a battery pack.

[0004] However, in the case of a battery pack configured with a large number of battery modules densely packed in a narrow space like this, it can be vulnerable to fire. For example, a thermal runaway situation may occur in any of the battery modules, and a situation where high-temperature gas is discharged from at least one battery cell may occur. In particular, when thermal runaway occurs in a specific battery cell or battery module, this can spread to other surrounding battery cells and battery modules, and ultimately to other battery packs, etc.

[0005] As part of measures to prevent the spread of such thermal runaway, a conventional structure has been proposed in which a flame-retardant / insulating shielding sheet (e.g., a Mica sheet) is covered on the outer surface of the case constituting the battery module. Such a shielding sheet can cover at least the surface on which thermal runaway occurs in the battery module and both adjacent sides.

[0006] Conventionally, the shielding sheet was attached to the top surface of the battery module using a jig while the battery module was fixed in place. Then, both sides of the shielding sheet were folded and attached to both sides of the battery module.

[0007] However, with conventional sheet attachment methods, there was a problem in that the shielding sheet did not completely adhere to the battery module at the edges, resulting in separation from the battery module.

[0008] Furthermore, the separation of these shielding sheets contributed to a decrease in the quality of the battery modules. [Overview of the project] [Problems that the invention aims to solve]

[0009] The problem that this invention aims to solve is to provide a sheet application device that can solve at least some of the problems of the prior art, specifically addressing the issue of the barrier sheet not properly adhering to the edge portion of the battery module.

[0010] Furthermore, the objective is to provide a sheet application device that can improve the quality of battery modules by solving the problem of separation of the shielding sheet. [Means for solving the problem]

[0011] A sheet attachment apparatus according to one embodiment of the present disclosure for achieving the above objectives includes a fixing part comprising two parts configured such that both side regions of the shielding sheet are each attached, and a lifting part provided between the two parts of the fixing part, to which the central region of the shielding sheet is attached, wherein the lifting part can guide the shielding sheet to fold so as to cover at least both sides of the battery module by descending in response to the attachment of the battery module.

[0012] This can solve the problem of the shielding sheet not properly adhering to the edges of the battery module.

[0013] Furthermore, resolving the issue of separation of the shielding sheet can improve the quality of the battery module.

[0014] Furthermore, the fixed section may further include two roller sections, each positioned opposite to the other, which press the barrier sheet toward the battery module as the lifting section descends.

[0015] Furthermore, when the lifting section is raised, the two roller sections are spaced closer together than the width of the battery module, and when the lifting section is lowered, the two roller sections are elastically deformed outward by the battery module, allowing them to spread apart from each other to a spacing corresponding to the width of the battery module.

[0016] Furthermore, each of the two roller sections may include a roller row (raw) comprising a base section fixed relative to a fixed section, a roller member that directly pressurizes the battery module and elastically moves outward relative to the base section, and a support section connecting the base section and the roller member.

[0017] Furthermore, each of the two roller sections may include multiple rows of rollers arranged in the vertical direction.

[0018] Furthermore, at least one of the multiple roller rows may include multiple roller members that share axes with one another.

[0019] Further, any one of the plurality of roller rows includes a plurality of roller members that form a gap between each other while sharing an axis, and the other one of the plurality of roller rows can include at least one roller member that vertically overlaps with the gap.

[0020] Furthermore, it further includes a driving part disposed below the lifting part and a shaft connecting the lifting part and the driving part, and the lifting part can be lifted and lowered electrically by the operation of the driving part.

[0021] Furthermore, it further includes an elastic member disposed below the lifting part, and the lifting part can be lifted and lowered corresponding to the weight of the battery module.

[0022] Furthermore, the fixing part is disposed corresponding to the position of the fixing hole formed in the blocking sheet in a state where the blocking sheet is deployed protruding from the upper surface of the fixing part, and can include at least one first fixing pin that guides the position of the blocking sheet before folding.

[0023] Furthermore, the position of the first fixing pin can be configured to be adjustable according to the size of the blocking sheet or the position of the fixing hole formed in the blocking sheet.

[0024] Furthermore, it can have a shape in which the upper surface of the first fixing pin and the side surface of the first fixing pin that is disposed farther from the lifting part are cut off.

[0025] Furthermore, the lifting part includes at least one second fixing pin that protrudes from the upper surface of the lifting part and is disposed corresponding to the position of the mounting hole formed in the battery module, and when the battery module is seated on the lifting part, the mounting hole can be seated on the second fixing pin.

Advantages of the Invention

[0026] Through the sheet sticking device according to various embodiments, the problem that the blocking sheet does not adhere correctly at the end portion of the battery module can be solved.

[0027] Moreover, it is possible to solve the separation problem of the blocking sheet and improve the quality of the battery module.

Brief Description of the Drawings

[0028] [Figure 1] It is a perspective view showing a sheet pasting device, a battery module, and a blocking sheet according to an embodiment of the present specification, illustrating a state in which the lifting part of the sheet pasting device has risen. [Figure 2] It is a cross-sectional view showing a state in which the lifting part of the sheet pasting device according to an embodiment of the present specification has risen. [Figure 3] It is a perspective view showing a state in which the lifting part of the sheet pasting device according to an embodiment of the present specification has descended. [Figure 4] It is an enlarged view showing a part of the sheet pasting device according to an embodiment of the present specification. [Figure 5] It is a cross-sectional view illustrating the process of attaching the blocking sheet to the battery module through the sheet pasting device according to an embodiment of the present specification. [Figure 6] It is a cross-sectional view illustrating the process of attaching the blocking sheet to the battery module through the sheet pasting device according to an embodiment of the present specification. [Figure 7] It is a cross-sectional view illustrating the process of attaching the blocking sheet to the battery module through the sheet pasting device according to an embodiment of the present specification. [Figure 8] It is a cross-sectional view illustrating the process of attaching the blocking sheet to the battery module through the sheet pasting device according to an embodiment of the present specification. [Figure 9] It is a cross-sectional view illustrating the process of attaching the blocking sheet to the battery module through the sheet pasting device according to an embodiment of the present specification.

Modes for Carrying Out the Invention

[0029] Prior to a detailed description of the present invention, terms and words used herein and in the claims should not be interpreted in a manner limited to their ordinary and dictionary meanings, but rather should be interpreted in a manner and concept consistent with the technical idea of ​​the present invention, based on the principle that inventors may appropriately define terms as concepts in order to best describe their invention. Accordingly, the embodiments described herein and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and it should be understood that, at the time of filing, there may be a variety of equivalents and variations that can substitute for them.

[0030] The same reference numerals or numerals in the drawings accompanying this specification indicate parts or components that perform substantially the same function. For convenience of explanation and understanding, the same reference numerals or numerals may be used to describe different embodiments. That is, even if components with the same reference numeral are illustrated in multiple drawings, not all of the drawings represent a single embodiment.

[0031] In the following descriptions, singular expressions include plural expressions unless the context clearly indicates otherwise. Terms such as “contains” or “constitutes” are intended to indicate the existence of features, figures, stages, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preemptively exclude the existence or possibility of adding one or more different features, figures, stages, operations, components, parts, or combinations thereof.

[0032] Furthermore, in the following explanation, terms such as "top," "upper," "lower," "bottom," "side," "front," and "rear" are used based on the direction shown in the drawing, and it should be made clear beforehand that they may be expressed differently if the direction of the object changes.

[0033] Furthermore, in this specification and claims, terms including ordinal numbers, such as "first," "second," etc., may be used to distinguish between components. Such ordinal numbers are used to distinguish identical or similar components from one another, and the use of such ordinal numbers should not restrict the meaning of the terms. For example, the order of use or arrangement of components combined with such ordinal numbers should not be restricted by the numbers. If necessary, the ordinal numbers may be used interchangeably with each other.

[0034] Embodiments of the present invention will be described below with reference to the attached drawings. However, the concept of the present invention is not limited to the embodiments presented. For example, a person of ordinary skill who understands the concept of the present invention may propose other embodiments that fall within the scope of the present invention through the addition, modification, or deletion of components, and these too can be said to fall within the scope of the present invention. The shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

[0035] Figure 1 is a perspective view illustrating a sheet application device, battery module, and shielding sheet according to one embodiment of this specification, showing the lifting section of the sheet application device in a raised state. Figure 2 is a cross-sectional view illustrating the lifting section of the sheet application device according to one embodiment of this specification in a raised state. Figure 3 is a perspective view illustrating the lifting section of the sheet application device according to one embodiment of this specification in a lowered state. Figure 4 is an enlarged view of a part of the sheet application device according to one embodiment of this specification.

[0036] The following explanation will use the case where the battery module B is attached to the sheet attachment device 100 in an inverted state as an example. This is because the sheet attachment device 100 must cover the top surface of the battery module B and both adjacent sides where the vent holes are formed. However, it is not limited to this case; in the case of a battery module B where lower venting occurs, the battery module B can be attached to the sheet attachment device 100 in an uninverted state.

[0037] In the following, regardless of whether battery module B is installed upside down or upside down, using Figure 1 as a reference, the surface located below battery module B will be referred to as the "bottom surface" of battery module B, and the surface located above battery module B will be referred to as the "top surface" of battery module B.

[0038] Referring to Figures 1 to 3, the sheet application device 100 may include a fixing section 110. The fixing section 110 may consist of two parts. The two parts of the fixing section 110 may each be positioned on either side of the lifting section 120. The fixing section 110 may be a portion fixed to the lifting motion of the lifting section 120. The side regions of the barrier sheet S may each be fixed to the two parts of the fixing section 110.

[0039] Referring to Figures 1 and 4, the fixing portion 110 may include at least one first fixing pin 111. The first fixing pin 111 may protrude from the upper surface of the fixing portion 110. The first fixing pin 111 may be positioned corresponding to the location of fixing holes H formed in the blocking sheet S when the blocking sheet S is unfolded. For example, the fixing holes H of the blocking sheet S may be formed in the edge regions on both sides of the blocking sheet S, and the first fixing pin 111 may be provided in each of the two parts of the fixing portion 110 at a position corresponding to the fixing holes H of the blocking sheet S. The fixing holes H of the blocking sheet S may be secured to the first fixing pin 111. The first fixing pin 111 may guide the position of the blocking sheet S before folding.

[0040] The position of the first fixing pin 111 is adjustable according to the size of the shielding sheet S and the position of the fixing holes H formed in the shielding sheet S, and can correspond to the shape and size of the shielding sheet S or the battery module B. For example, the position of the first fixing pin 111 can be adjusted little by little in the front-to-back direction or in the side-to-side direction. This variability of the position of the first fixing pin 111 can increase the versatility of the sheet application device 100.

[0041] Referring to Figure 4, the first fixing pin 111 may have a shape that avoids interference with the fixing holes H of the barrier sheet S during the bending behavior of the barrier sheet S. For example, a columnar first fixing pin 111 may have a cut-off shape (e.g., rounded or chamfered shape) between its upper surface 111a and the side surface 111b of the first fixing pin 111 that is located further away from the lifting section. This allows the fixing holes H of the barrier sheet S to be easily separated from the first fixing pin 111 as the lifting section 120 descends, thereby preventing problems such as tearing or damage to the barrier sheet S.

[0042] For a similar purpose, the fixing holes H of the shielding sheet S can be provided with a margin area larger than the area occupied by the first fixing pin 111, thereby minimizing the possibility of interference between the first fixing pin 111 and the shielding sheet S.

[0043] Referring to Figures 1 to 3, the sheet application device 100 may include a lifting section 120. The lifting section 120 may be provided between the two parts of the fixing section 110. When the lifting section 120 is raised, the height of the upper surface of the lifting section 120 may correspond to the height of the upper surface of the fixing section 110. This ensures that when the barrier sheet S is first attached to the lifting section 120 and the fixing section 110, the barrier sheet S is attached without wrinkles and in a fully stretched state. However, it is not limited to this, and when the lifting section 120 is raised depending on the deployment form of the barrier sheet S, the height of the upper surface of the lifting section 120 and the height of the upper surface of the fixing section 110 may differ.

[0044] The lifting section 120 can perform an upward and downward movement relative to the fixed section 110. The lifting section 120 can descend in response to the secure attachment of the battery module B. Through its upward and downward movement, the lifting section 120 can guide the folding of the shielding sheet S so that it covers at least both sides of the battery module B. The process of attaching the shielding sheet S by the upward and downward movement of the lifting section 120 will be described in detail with reference to Figures 4 to 7.

[0045] The central region of the shielding sheet S can be attached to the lifting section 120. Specifically, before the shielding sheet S is attached to the battery module B, the shielding sheet S may be stretched across the fixing sections 110 and the lifting section 120 of the two parts. When the shielding sheet S is attached to the sheet attachment device 100 in this state, the central region of the shielding sheet S may be positioned on the lifting section 120, and its side regions may be positioned on the fixing sections 110 of the two parts, respectively.

[0046] The lifting unit 120 may include at least one second fixing pin 121. The second fixing pin 121 may protrude from the upper surface of the lifting unit 120. The second fixing pin 121 may be positioned in accordance with the location of mounting holes M formed in the battery module B. For example, the mounting holes M of the battery module B may be formed perpendicular to the four vertex regions of the battery module B, and the second fixing pin 121 may be formed correspondingly in the four vertex regions of the lifting unit 120. When the battery module B is mounted to the lifting unit 120, the mounting holes M of the battery module B may be fixed to the second fixing pin 121. The second fixing pin 121 can guide the mounting position of the battery module B. This allows the worker to mount the battery module B in the correct position without special effort.

[0047] The sheet application device 100 may include a roller section 130. The roller section 130 may be positioned corresponding to each of the two fixing sections 110. The two roller sections 130 may be arranged facing each other to press the barrier sheet S toward the battery module B.

[0048] When the lifting section 120 is raised, the two roller sections 130 may be spaced closer together than the width of the battery module B. Furthermore, as the lifting section 120 descends, the two roller sections 130 may spread apart from each other, elastically deformed outward by the battery module B, to a spacing corresponding to the width of the battery module B. The elastic deformation of the two roller sections 130 can be achieved by the elastic movement of the roller member 131b. The roller member 131b will be described in detail later.

[0049] Referring to Figures 2 and 3, each of the two roller sections 130 can include a roller row (raw) 131. Multiple roller rows 131 may be provided. Multiple roller rows 131 may be arranged vertically in each roller section 130. For example, referring to Figures 2 to 4, the multiple roller rows 131 may include a first roller row 1311 and a second roller row 1312 arranged vertically. By providing multiple roller rows 131, the shielding sheet S can be pressed repeatedly against the battery module B side, thereby enabling effective attachment of the shielding sheet S.

[0050] However, this is not limited to this; if the shielding sheet S can be attached to the battery module B to a sufficient degree using only one roller row 131, then only one roller row 131 may be provided. Furthermore, to ensure more reliable attachment of the shielding sheet S, three or more roller rows 131 may be provided.

[0051] Referring to Figure 2, each roller row 131 may include a base portion 131a. The base portion 131a may be a part fixed relative to the fixing portion 110. The base portion 131a may be fixed below the upper surface of the fixing portion 110.

[0052] Each roller row 131 may include a roller member 131b. The roller member 131b may rotate around an axis extending in the front-rear direction. The roller member 131b may be the part that directly pressurizes the barrier sheet S toward the battery module B. By providing the roller member 131b to rotate, the battery module B can move up and down smoothly even when pressurized by the roller member 131b.

[0053] The roller member 131b can be elastically moved outward relative to the base portion 131a. Specifically, as the battery module B descends, the roller member 131b can be elastically moved while being pushed outward by the battery module B. At this time, an elastic restoring force acts continuously on the roller member 131b toward the battery module B, so that the barrier sheet S can be effectively brought into close contact with the battery module B. When the battery module B has completely descended or risen and is no longer pressed by the roller member 131b, the roller member 131b can return to its original position due to the elastic restoring force.

[0054] Each roller row 131 may include a support portion 131c connecting the base portion 131a and the roller member 131b. The support portion 131c may be provided penetrating the base portion 131a in a lateral direction. The support portion 131c may slide relative to the base portion 131a. A separate elastic member (not shown) may be provided between the base portion 131a and the support portion 131c, and such elastic member may provide an elastic force acting inward on the support portion 131c as the support portion 131c slides outward relative to the base portion 131a.

[0055] At least one of the multiple roller rows 131 may include multiple roller members 131b that share axes with one another. For example, referring to Figure 3, the first roller row 1311 may be configured such that three roller members 131b share axes with one another, and the second roller row 1312 may be configured such that two roller members 131b share axes with one another.

[0056] Specifically, the support portion 131c that supports the roller member 131b can be connected to both ends of the roller member 131b due to the rotating structure of the roller member 131b, and the elastic restoring force of the roller member 131b can be transmitted through the support portion 131c. If each roller row 131 is composed of one long roller member 131b, the intermediate region of the roller member 131b is not supported by the support portion 131c, so the elastic restoring force of the roller member 131b may not be properly transmitted to the intermediate region of the roller member 131b, and as a result, the barrier sheet S may not be in complete contact with the battery module B in the region corresponding to the intermediate region of the roller member 131b. On the other hand, if each roller row 131 is composed of multiple roller members 131b, as in one embodiment of this specification, the shortened roller members 131b receive force transmission individually by the support portion 131c, thus solving the problem of the intermediate region of the roller member 131b not being able to sufficiently press the barrier sheet S against the battery module B.

[0057] However, the invention is not limited to this, and each roller row 131 may be composed of a single roller member 131b, provided that the roller member 131b has sufficient rigidity and sufficient elastic restoring force can be provided across the entire area of ​​the roller member 131b from the support portions 131c connected to both ends of the roller member 131b.

[0058] A gap formed by multiple roller members 131b constituting any one of the roller rows 131 can overlap vertically with at least one roller member constituting any other roller row 131. For example, referring to Figure 3, a gap formed by three roller members 131b constituting the first roller row 1311 can overlap vertically with two roller members 131b constituting the second roller row 1312. As a result, incomplete application of the sealing sheet S in a gap formed in any of the roller rows 131 can be completed by the roller members 131b of the other roller rows 131 filling the gap.

[0059] Referring to Figure 2, the sheet application device 100 may include a drive unit 140. The drive unit 140 may be located below the lifting unit 120. The drive unit 140 may provide the lifting force for the lifting unit 120. The drive unit 140 may consist of an electric device such as a motor. The lifting unit 120 can be raised and lowered electrically by the operation of the drive unit 140. However, it is not limited to this, and may consist of a device operated by a mechanical mechanism such as a hydraulic cylinder or an air cylinder.

[0060] A sheet application apparatus 100 according to one embodiment of this specification may include a shaft 150. The shaft 150 can connect the lifting unit 120 and the drive unit 140. The shaft 150 can transmit the lifting force generated by the drive unit 140 to the lifting unit 120.

[0061] In this case, after the battery module B is placed on the lifting section 120 to which the shielding sheet S is attached, the lifting section 120 can be lowered when the operator takes action to start the lowering operation of the lifting section 120. Also, when the lifting section 120 is in the lowered position, the lifting section 120 can be raised when the operator takes action to start the raising operation of the lifting section 120. The lowering and / or raising operation of the lifting section 120 can be performed by an operation button provided on a part of the sheet attachment device 100.

[0062] In contrast, the sheet application device 100 may include an elastic member (not shown). The elastic member (not shown) may be positioned below the lifting section 120. The lifting section 120 can move up and down in accordance with the weight of the battery module. In this case, when the worker securely attaches the battery module B to the lifting section 120, the lifting section 120 can move down due to the weight of the battery module B. After the lifting section 120 has moved down to the target point, when the worker lifts the battery module B again, the lifting section 120 can move up, and at this time, the worker can easily lift the battery module B through the elastic force of the elastic member (not shown).

[0063] Figures 5 to 8 are cross-sectional views illustrating the process by which a shielding sheet is attached to a battery module through a sheet attachment device according to one embodiment of this specification.

[0064] Referring to Figure 5, the barrier sheet S can be placed on the sheet attachment device 100. At this stage, the lifting section 120 may be positioned at a height where the height of its upper surface corresponds to the height of the upper surface of the fixing section 110. The central region of the barrier sheet S may be fixed onto the lifting section 120, and the side regions of the barrier sheet S may be fixed onto the fixing sections 110 of the two parts. At this time, the position of the barrier sheet S can be guided by fixing holes (H, shown in Figures 1 and 4) formed in the barrier sheet S being fixed onto first fixing pins 111 protruding from the upper surface of the fixing section 110.

[0065] Referring to Figure 6, with the shielding sheet S securely attached to the sheet attachment device 100, the battery module B can be securely attached to the shielding sheet S at a position corresponding to the position of the lifting unit 120. At this time, the position of the battery module B can be guided by inserting a mounting hole (M, shown in Figure 1) provided in the battery module B into a second fixing pin 121 protruding from the lifting unit 120. Due to its weight, the surface of the battery module B that is in contact with the shielding sheet S can be attached to the shielding sheet S.

[0066] Referring to Figure 7, when the operator starts the downward movement of the lifting unit 120, the battery module B and the central region of the shielding sheet S can be lowered together with the lifting unit 120. At this stage, the side regions of the shielding sheet S are lifted up while being folded upward, and the fixing holes H of the shielding sheet S can be separated from the first fixing pins 111.

[0067] As the lifting section 120 descends, the two roller sections 130 may come into contact with the shielding sheet S. From the moment the roller sections 130 come into contact with the shielding sheet S, the roller sections 130 can begin to press down on the shielding sheet S towards the end of the battery module B. As a result, the shielding sheet S can be tightly adhered to the end portion of the battery module B by the roller sections 130. Up to this stage, the distance between the two roller sections 130 may be smaller than the width of the battery module B.

[0068] Referring to Figure 8, as the lifting section 120 descends further, the battery module B may be positioned between the two roller sections 130. The roller sections 130 can press the barrier sheet S against the side of the battery module B.

[0069] Specifically, as the two roller sections 130 are pushed outward by the battery module B, the distance between the two roller sections 130 can widen to a distance corresponding to the width of the battery module B. More specifically, after the end portions of the battery module B come into contact with the roller members 131b that constitute each of the two roller sections 130, the sides of the battery module B can slide downward along the roller members 131b. At this time, the two roller sections 130 can widen to the width of the battery module B as the roller members 131b elastically move outward. Since an elastic restoring force is continuously acting inward on the roller members 131b, the two roller sections 130 can continuously keep the shielding sheet S in close contact with the battery module B while the battery module B is descending.

[0070] In this way, since the two roller sections 130 continuously pressurize the battery module B from the edges to the sides, the barrier sheet S placed between the two roller sections 130 and the battery module B can continuously adhere to the battery module B, including the edges and sides. This solves the problem of the barrier sheet S separating (i.e., lifting up) at the edges of the battery module B, and can improve the quality of the battery module B.

[0071] Referring to Figure 9, the lifting section 120 can be lowered until at least a portion of the two roller sections 130 reaches a position higher than the top surface of the battery module B. This allows the shielding sheet S to be temporarily attached to the battery module B over its bottom surface, edges, and sides.

[0072] Thereafter, when the operator starts the upward movement of the lifting unit 120, the two roller units 130 can apply pressure to the shielding sheet S towards the battery module B again, thereby secondarily attaching the shielding sheet S to the sides and edges of the battery module B.

[0073] After following the above steps, the attachment of the shielding sheet S to the battery module B can be completed. However, to ensure more secure attachment of the shielding sheet S, the process shown in Figures 7 to 9 and its reverse order can be repeated.

[0074] Any embodiment of this specification described above or any other embodiment is not mutually exclusive or distinct from one another. Any embodiment of this specification described above or any other embodiment may be used in combination or in combination with each other in terms of their respective configurations or functions.

[0075] For example, this means that configuration A described in a particular embodiment and / or drawing may be combined with configuration B described in another embodiment and / or drawing. In other words, even if combinations between configurations are not directly described, it means that combinations are possible unless it is stated that such combinations are impossible.

[0076] The above detailed description should not be constrained in any way and should be considered illustrative. The scope of this specification should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of this specification are included within this specification. [Explanation of symbols]

[0077] 100: Sheet application device 110: Fixed part 111: First fixing pin 111a: Top surface of the first fixing pin 111b: Side view of the first fixing pin 120: Lifting section 121: Second fixing pin 130: Roller section 131: Roller row 1311: First row of rollers 1312: Second row of rollers 131a: Base section 131b: Roller component 131c: Support part 140: Drive unit 150: Shaft B: Battery module M: Mounting Hole S: Barrier sheet H: Fixed hole

Claims

1. The fixing parts consist of two parts, each configured to securely attach to both sides of the barrier sheet, It includes a lifting mechanism provided between the two parts of the fixed part, to which the central region of the shielding sheet is secured, The lifting mechanism lowers in accordance with the secure attachment of the battery module, guiding the shielding sheet to fold so that it covers at least both sides of the battery module. Sheet application device.

2. The sheet application device according to claim 1, further comprising two roller sections provided opposite to each of the two parts of the fixed section, which press the barrier sheet toward the battery module as the lifting section descends.

3. The sheet application device according to claim 2, wherein when the lifting unit is raised, the two roller sections are spaced at an interval smaller than the width of the battery module, and when the lifting unit is lowered, the two roller sections are elastically deformed outward by the battery module and spread apart from each other at an interval corresponding to the width of the battery module.

4. The sheet application apparatus according to claim 3, wherein each of the two roller sections includes a roller row (row) comprising a base section fixed relative to the fixing section, a roller member that directly pressurizes the battery module and elastically moves outward relative to the base section, and a support section connecting the base section and the roller member.

5. The sheet application apparatus according to claim 2, wherein each of the two roller sections includes a plurality of roller rows arranged in the vertical direction.

6. The sheet-applying apparatus according to claim 5, wherein at least one of the plurality of roller rows includes a plurality of roller members that share axes with one another.

7. Any one of the aforementioned plurality of roller rows includes a plurality of roller members that share an axis with each other while forming a gap between them. The sheet-applying apparatus according to claim 5, wherein one of the plurality of roller rows includes at least one roller member that overlaps the gap vertically.

8. The system further includes a drive unit positioned below the lifting unit and a shaft connecting the lifting unit and the drive unit, The sheet application device according to claim 1, wherein the lifting unit is raised and lowered electrically by the operation of the drive unit.

9. The present invention further includes an elastic member positioned below the lifting section, The sheet application device according to claim 1, wherein the lifting section moves up and down in accordance with the weight of the battery module.

10. The sheet attachment device according to any one of claims 1 to 9, wherein the fixing portion protrudes from the upper surface of the fixing portion and is positioned corresponding to the positions of fixing holes formed in the blocking sheet when the blocking sheet is unfolded, and includes at least one first fixing pin that guides the position of the blocking sheet before folding.

11. The sheet attachment device according to claim 10, wherein the position of the first fixing pin is configured to be adjustable according to the size of the shielding sheet or the position of the fixing holes formed in the shielding sheet.

12. The sheet-applying device according to claim 10, wherein the upper surface of the first fixing pin and the side surface of the first fixing pin that is located further away from the lifting mechanism are cut off.

13. The lifting mechanism includes at least one second fixing pin that protrudes from the upper surface of the lifting mechanism and is positioned corresponding to the location of a mounting hole formed in the battery module. The sheet attachment device according to any one of claims 1 to 9, wherein when the battery module is attached to the lifting section, the mounting hole is attached to the second fixing pin.

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