Sheet attachment device

Abstract

Provided is a sheet attachment device. A sheet attaching device according to an embodiment of the present invention comprises: a fixing unit in two parts configured so that both side regions of a blocking sheet are respectively placed thereon; and an elevating unit provided between the two parts of the fixing unit so that a central region of the blocking sheet is placed thereon. The elevating unit descends in response to the placement of a battery module, thereby guiding the folding of the blocking sheet so that the blocking sheet surrounds at least both sides of the battery module. Other embodiments are possible.

Description

Sheet attachment device

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

[0002] Lithium secondary batteries store and produce electrical energy through the intercalation and deintercalation of lithium ions between the anode and cathode. Lithium secondary batteries possess excellent storage capacity, voltage, and lifespan characteristics, making them ideal for use in laptops, smartphones, and even electric vehicles.

[0003] Typically, lithium secondary batteries are often configured with multiple battery cells electrically connected in series and / or parallel. Specifically, multiple battery cells can be electrically connected and housed within a module case to form a single battery module. Furthermore, battery modules can be used singly, or two or more can be electrically connected in series and / or parallel to form higher-level devices such as battery packs.

[0004] However, battery packs composed of multiple battery modules densely packed into a small space can be vulnerable to fire. For example, thermal propagation can occur in a single battery module, causing high-temperature gas emissions from at least one battery cell. Specifically, if thermal propagation occurs in a specific battery cell or module, it can spread to other nearby battery cells, battery modules, and even other battery packs.

[0005] As part of a measure to prevent the spread of such thermal runaway, a structure has been proposed in the past in which a flame-retardant / insulating barrier sheet (e.g., a mica sheet) is wrapped around the outer surface of the case constituting the battery module. Such a barrier sheet can cover at least the surface of the battery module where thermal runaway occurs and both adjacent side surfaces.

[0006] In the past, the attachment of the blocking sheet was performed by first attaching the blocking sheet to the upper surface of the battery module using a jig for attaching the blocking sheet while the battery module was fixed, and then folding both sides of the blocking sheet and attaching it to both sides of the battery module.

[0007] However, in the conventional sheet attachment method, there was a problem in that the blocking sheet was not completely attached to the battery module at the corner of the battery module and was separated from the battery module.

[0008] Additionally, the spacing of these blocking sheets was a factor in the deterioration of the quality of the battery module.

[0009] The problem to be solved by this specification is to provide a sheet attachment device that can solve the problem of a blocking sheet not being properly adhered to a corner portion of a battery module, which is designed to solve at least some of the problems of the prior art.

[0010] In addition, a sheet attachment device is provided that can improve the quality of a battery module by solving the separation problem of the blocking sheet.

[0011] According to one embodiment of the present disclosure for achieving the above task, a sheet attachment device includes a two-part fixing part configured to allow both side regions of a blocking sheet to be respectively seated, and an elevating part provided between the two parts of the fixing part to allow the central region of the blocking sheet to be seated, wherein the elevating part can guide folding so that the blocking sheet wraps at least both side surfaces of the battery module by lowering in response to the seated battery module.

[0012] This solves the problem of the blocking sheet not being properly adhered to the corners of the battery module.

[0013] Additionally, the quality of the battery module can be improved by solving the spacing problem of the blocking sheet.

[0014] Additionally, the two parts of the fixed portion may further include two roller portions that are arranged to face each other and press the blocking sheet toward the battery module as the lifting portion descends.

[0015] In addition, the two roller sections are provided with a gap smaller than the width of the battery module when the elevator section is raised, and when the elevator section is lowered, the two roller sections are elastically deformed outward by the battery module and can be separated from each other with a gap corresponding to the width of the battery module.

[0016] Additionally, each of the two roller sections may include a roller raw including a base section that is relatively fixed with respect to the fixed section, a roller member that directly presses the battery module and elastically moves outward with respect to the base section, and a support section that connects the base section and the roller member.

[0017] Additionally, each of the two roller sections may include a plurality of roller rows arranged in a vertical direction.

[0018] Additionally, at least one of the plurality of roller rows may include a plurality of roller members that share an axis with each other.

[0019] Additionally, one of the plurality of roller rows may include a plurality of roller members that share an axis with each other and form a gap therebetween, and another of the plurality of roller rows may include at least one roller member that overlaps the gap vertically.

[0020] In addition, the device further includes a driving unit disposed below the elevator and a shaft connecting the elevator and the driving unit, and the elevator can be raised and lowered electrically by operation of the driving unit.

[0021] In addition, an elastic member is further included that is placed under the lifting member, and the lifting member can be raised or lowered in response to the weight of the battery module.

[0022] Additionally, the fixing member may include at least one first fixing pin that protrudes from the upper surface of the fixing member and is positioned corresponding to the position of the fixing hole formed in the blocking sheet when the blocking sheet is unfolded, thereby guiding the position of the blocking sheet before folding.

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

[0024] Additionally, the upper surface of the first fixed pin and the side of the fixed pin that is positioned farther away from the lifting portion may have a cut-off shape.

[0025] Additionally, the lift member includes at least one second fixing pin that protrudes from an upper surface of the lift member and is positioned corresponding to a position of a mounting hole formed in the battery module, and when the battery module is mounted on the lift member, the mounting hole can be mounted on the second fixing pin.

[0026] The problem of the blocking sheet not being properly adhered to the corner portion of the battery module can be solved through the sheet attachment device according to various embodiments.

[0027] Additionally, the quality of the battery module can be improved by solving the spacing problem of the blocking sheet.

[0028] FIG. 1 is a perspective view illustrating a sheet attachment device, a battery module, and a blocking sheet according to one embodiment of the present specification, and illustrates a state in which the lifting portion of the sheet attachment device is raised.

[0029] FIG. 2 is a cross-sectional view showing a state in which the lifting portion of the sheet attachment device according to one embodiment of the present specification is raised.

[0030] FIG. 3 is a perspective view illustrating a state in which the lifting unit of a sheet attachment device according to one embodiment of the present specification is lowered.

[0031] FIG. 4 is an enlarged view of a portion of a sheet attachment device according to one embodiment of the present specification.

[0032] FIGS. 5 to 9 are cross-sectional views illustrating a process in which a blocking sheet is attached to a battery module through a sheet attachment device according to one embodiment of the present specification.

[0033] Before going into the detailed description of the present invention, it should be noted that the terms and words used in this specification and claims should not be interpreted as limited to their usual or dictionary meanings, but should be interpreted with meanings and concepts that conform to the technical idea of ​​the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain his own invention in the best way. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of ​​the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of this application.

[0034] The same reference numbers or symbols used in each drawing attached to this specification represent parts or components that perform substantially the same functions. For convenience of explanation and understanding, the same reference numbers or symbols may be used in different embodiments. In other words, even if components with the same reference numbers are depicted in multiple drawings, they do not necessarily represent a single embodiment.

[0035] In the following description, singular expressions include plural expressions unless the context clearly indicates otherwise. Terms such as "comprises" or "comprises" should be understood to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0036] In addition, in the description below, expressions such as top, upper, lower, lower, side, front, and rear are expressed based on the direction shown in the drawing, and it is noted in advance that they may be expressed differently if the direction of the object in question changes.

[0037] Additionally, terms including ordinal numbers, such as "first," "second," etc., may be used in this specification and claims to distinguish between components. These ordinal numbers are used to distinguish identical or similar components from each other, and the use of these ordinal numbers should not be interpreted in a limited manner. For example, components associated with these ordinals should not be interpreted in a restricted manner, such as in the order of use or arrangement, based on their numbers. If necessary, each ordinal number may be used interchangeably.

[0038] Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. However, the spirit of the present invention is not limited to the presented embodiments. For example, those skilled in the art who understand the spirit of the present invention may propose other embodiments within the spirit of the present invention by adding, modifying, or deleting components, etc., but these will also be considered to be within the spirit of the present invention. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

[0039] FIG. 1 is a perspective view illustrating a seat attachment device, a battery module, and a blocking sheet according to one embodiment of the present disclosure, and illustrates a state in which the elevating portion of the seat attachment device is raised. FIG. 2 is a cross-sectional view illustrating a state in which the elevating portion of the seat attachment device is raised according to one embodiment of the present disclosure. FIG. 3 is a perspective view illustrating a state in which the elevating portion of the seat attachment device according to one embodiment of the present disclosure is lowered. FIG. 4 is an enlarged view of a portion of the seat attachment device according to one embodiment of the present disclosure.

[0040] Hereinafter, a case in which a battery module (B) is mounted in an upside-down state on a sheet attachment device (100) will be described as an example. This is because the sheet attachment device (100) must be wrapped around the upper surface of the battery module (B) where the venting hole is formed and the two adjacent side surfaces thereof. However, the present invention is not limited thereto, and in the case of a battery module (B) in which lower venting occurs, the battery module (B) may be mounted in an upside-down state on the sheet attachment device (100).

[0041] Hereinafter, regardless of whether the battery module (B) is installed upside down or not, the surface located below the battery module (B) with reference to FIG. 1 is referred to as the 'lower surface' of the battery module (B), and the surface located above the battery module (B) is referred to as the 'upper surface' of the battery module (B).

[0042] Referring to FIGS. 1 to 3, the sheet attachment device (100) may include a fixing member (110). The fixing member (110) may be composed of two parts. The fixing members (110) of the two parts may be respectively positioned on opposite sides of the lifting member (120). The fixing members (110) may be fixed parts with respect to the lifting movement of the lifting member (120). The opposite side areas of the blocking sheet (S) may be respectively secured to the fixing members (110) of the two parts.

[0043] Referring to FIGS. 1 and 4, the fixing part (110) may include at least one first fixing pin (111). The first fixing pin (111) may protrude from the upper surface of the fixing part (110). The first fixing pin (111) may be positioned corresponding to the position of the fixing hole (H) formed in the blocking sheet (S) when the blocking sheet (S) is unfolded. For example, the fixing hole (H) of the blocking sheet (S) may be formed in the edge areas of both sides of the blocking sheet (S), and the first fixing pin (111) may be provided at a position corresponding to the fixing hole (H) of the blocking sheet (S) in each of the fixing parts (110) of the two parts. The fixing hole (H) of the blocking sheet (S) may be seated on the first fixing pin (111). The first fixing pin (111) may guide the position of the blocking sheet (S) before folding.

[0044] The position of the first fixing pin (111) can be adjusted according to the size of the blocking sheet (S) or the position of the formed fixing hole (H) of the blocking sheet (S), so as to correspond to the shape and size of the blocking sheet (S) or the battery module (B). For example, the position of the first fixing pin (111) can be slightly adjusted in the front-back direction or in both lateral directions. According to this positional variability of the first fixing pin (111), the versatility of the sheet attachment device (100) can be expanded.

[0045] Referring to FIG. 4, the first fixing pin (111) may have an avoidance shape that does not interfere with the fixing hole (H) of the blocking sheet (S) when the blocking sheet (S) is folded. For example, the first fixing pin (111) having a pillar shape may have a cut-off shape (e.g., a round or chamfered shape) between the upper surface (111a) and the surface (111b) of the side of the first fixing pin (111) that is disposed farther away from the lifting unit. Through this, when the lifting unit (120) descends and the fixing hole (H) of the blocking sheet (S) is separated from the first fixing pin (111), the fixing hole (H) can be easily separated from the first fixing pin (111), thereby preventing the blocking sheet (S) from being torn or damaged.

[0046] For a similar purpose, the fixing hole (H) of the blocking sheet (S) can have a margin area, i.e., an area larger than the area occupied by the first fixing pin (111), to minimize the possibility of interference between the first fixing pin (111) and the blocking sheet (S).

[0047] Referring to FIGS. 1 to 3, the sheet attachment device (100) may include an elevating member (120). The elevating member (120) may be provided between two parts of the fixing member (110). When the elevating member (120) is raised, the height of the upper surface of the elevating member (120) may correspond to the height of the upper surface of the fixing member (110). Through this, when the blocking sheet (S) is initially placed on the elevating member (120) and the fixing member (110), the blocking sheet (S) may be placed in a fully unfolded state without being crumpled. However, the present invention is not limited thereto, and depending on the unfolding form of the blocking sheet (S), when the elevating member (120) is raised, the height of the upper surface of the elevating member (120) and the height of the upper surface of the fixing member (110) may be different.

[0048] The lifting member (120) can perform an upward and downward movement with respect to the fixed member (110). The lifting member (120) can descend in response to the placement of the battery module (B). The lifting member (120) can guide the folding of the blocking sheet (S) so that it surrounds at least both sides of the battery module (B) through the upward and downward movement. The process of attaching the blocking sheet (S) according to the upward and downward movement of the lifting member (120) will be described in detail later with reference to FIGS. 4 to 7 .

[0049] The central region of the blocking sheet (S) can be placed on the lifting member (120). Specifically, before the blocking sheet (S) is attached to the battery module (B), the blocking sheet (S) can be spread across the two fixing members (110) and the lifting member (120). When the blocking sheet (S) is placed on the sheet attachment device (100) in this state, the central region of the blocking sheet (S) can be placed on the lifting member (120), and the two side regions can be placed on the two fixing members (110), respectively.

[0050] The lifting member (120) may include at least one second fixing pin (121). The second fixing pin (121) may protrude from the upper surface of the lifting member (120). The second fixing pin (121) may be positioned corresponding to the position of the mounting hole (M) formed in the battery module (B). For example, the mounting hole (M) of the battery module (B) may be formed vertically at the four corner areas of the battery module (B), and the second fixing pin (121) may be formed correspondingly at the four corner areas of the lifting member (120). When the battery module (B) is mounted on the lifting member (120), the mounting hole (M) of the battery module (B) may be mounted on the second fixing pin (121). The second fixing pin (121) may guide the mounting position of the battery module (B). This allows the worker to place the battery module (B) in the correct position without much effort.

[0051] The sheet attachment device (100) may include a roller portion (130). The roller portion (130) may be positioned corresponding to each of the two fixing portions (110). The two roller portions (130) are provided to face each other, so as to press the blocking sheet (S) toward the battery module (B).

[0052] When the lifting unit (120) is raised, the two roller units (130) may be provided with a gap smaller than the width of the battery module (B). In addition, as the lifting unit (120) is lowered, the two roller units (130) may be elastically deformed outward by the battery module (B) and may be separated from each other with a gap corresponding to the width of the battery module (B). The elastic deformation of the two roller units (130) may be achieved through elastic movement of the roller member (131b). In this regard, the roller member (131b) will be described in detail later.

[0053] Referring to FIGS. 2 and 3, each of the two roller sections (130) may include a roller row (raw) (131). The roller rows (131) may be provided in multiple numbers. The multiple roller rows (131) may be arranged in a vertical direction in each roller section (130). For example, referring to FIGS. 2 to 4, the multiple roller rows (131) may include a first roller row (1311) and a second roller row (1312) arranged vertically. Since the roller rows (131) are provided in multiple numbers, the blocking sheet (S) may be pressed in an overlapping manner toward the battery module (B), so that the attachment of the blocking sheet (S) may be effectively performed.

[0054] However, the present invention is not limited thereto, and if the blocking sheet (S) can be sufficiently attached to the battery module (B) with only one roller row (131), only one roller row (131) may be provided. In addition, for more secure attachment of the blocking sheet (S), three or more roller rows (131) may be provided.

[0055] Referring to FIG. 2, each roller row (131) may include a base portion (131a). The base portion (131a) may be a portion that is relatively fixed with respect to the fixed portion (110). The base portion (131a) may be fixed below the upper surface of the fixed portion (110).

[0056] Each roller row (131) may include a roller member (131b). The roller member (131b) may rotate around an axis extending in the forward and backward directions. The roller member (131b) may be a portion that directly presses the blocking sheet (S) toward the battery module (B). Since the roller member (131b) is provided to rotate, the battery module (B) can be smoothly raised and lowered even when pressed by the roller member (131b).

[0057] The roller member (131b) can elastically move outward with respect to the base portion (131a). Specifically, the roller member (131b) can elastically move while being pushed outward by the battery module (B) as the battery module (B) descends. At this time, since an elastic restoring force acting toward the battery module (B) continuously acts on the roller member (131b), the blocking sheet (S) can be effectively pressed against the battery module (B). When the battery module (B) is completely lowered or raised and the battery module (B) is no longer pressed by the roller member (131b), the roller member (131b) can return to its original position by the elastic restoring force.

[0058] Each roller row (131) may include a support member (131c) connecting the base member (131a) and the roller member (131b). The support member (131c) may be provided to laterally penetrate the base member (131a). The support member (131c) may slide relative to the base member (131a). A separate elastic member (not shown) may be provided between the base member (131a) and the support member (131c), and this elastic member may provide an elastic force acting inward to the support member (131c) as the support member (131c) slides outward relative to the base member (131a).

[0059] At least one of the plurality of roller rows (131) may include a plurality of roller members (131b) that share axes with each other. For example, referring to FIG. 3, the first roller row (1311) may be provided with three roller members (131b) that share axes with each other, and the second roller row (1312) may be provided with two roller members (131b) that share axes with each other.

[0060] Specifically, the support member (131c) supporting 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 member (131c). If each roller row (131) is composed of one long roller member (131b), the middle region of the roller member (131b) is not supported by the support member (131c), and therefore, the elastic restoring force of the roller member (131b) may not be properly transmitted to the middle region of the roller member (131b), and accordingly, the blocking sheet (S) may not be completely in close contact with the battery module (B) in the region corresponding to the middle region of the roller member (131b). On the other hand, in a case where each roller row (131) is composed of a plurality of roller members (131b), as in one embodiment of the present specification, the shortened roller members (131b) are individually subjected to force by the support member (131c), thereby solving the problem of the middle region of the roller members (131b) not sufficiently pressing the blocking sheet (S) against the battery module (B).

[0061] However, the invention is not limited thereto, and if the roller member (131b) has sufficiently strong rigidity so that sufficient elastic restoring force can be provided over the entire area of ​​the roller member (131b) from the support members (131c) connected to both ends of the roller member (131b), each roller row (131) may be composed of one roller member (131b).

[0062] A gap formed by a plurality of roller members (131b) constituting one roller row (131) can overlap vertically with at least one roller member constituting another roller row (131). For example, referring to FIG. 3, a gap formed by three roller members (131b) constituting a first roller row (1311) can overlap vertically with two roller members (131b) constituting a second roller row (1312). Through this, attachment of a blocking sheet (S) that has not progressed sufficiently in a gap portion formed in one roller row (131) can be completed by the roller members (131b) of another roller row (131).

[0063] Referring to FIG. 2, the sheet attachment device (100) may include a driving unit (140). The driving unit (140) may be positioned below the lifting unit (120). The driving unit (140) may provide a lifting force for the lifting unit (120). The driving unit (140) may be configured as an electric device such as a motor. The lifting unit (120) may be raised and lowered electrically by the operation of the driving unit (140). However, the present invention is not limited thereto, and may also be configured as a device that operates with a mechanical mechanism such as a hydraulic cylinder or an air cylinder.

[0064] A sheet attachment device (100) according to one embodiment of the present specification may include a shaft (150). The shaft (150) may connect an elevating unit (120) and a driving unit (140). The shaft (150) may transmit an elevating force generated by the driving unit (140) to the elevating unit (120).

[0065] In this case, if the battery module (B) is placed on the lift (120) on which the blocking sheet (S) is installed, and the worker takes action to initiate a lowering operation of the lift (120), the lift (120) can be lowered. In addition, if the worker takes action to initiate a rising operation of the lift (120) while the lift (120) is lowered, the lift (120) can be raised. The lowering operation and / or the rising operation of the lift (120) can be performed by an operation button provided on a part of the sheet attachment device (100).

[0066] Alternatively, the sheet attachment device (100) may include an elastic member (not shown). The elastic member (not shown) may be positioned below the lifting member (120). The lifting member (120) may be raised or lowered in response to the weight of the battery module. In this case, when a worker places the battery module (B) on the lifting member (120), the lifting member (120) may be lowered by the weight of the battery module (B). After the lifting member (120) has been lowered to a target point, when the worker lifts the battery module (B) again, the lifting member (120) may be raised. At this time, the worker may easily lift the battery module (B) through the elastic force of the elastic member (not shown).

[0067] FIGS. 5 to 8 are cross-sectional views illustrating a process in which a blocking sheet is attached to a battery module through a sheet attachment device according to one embodiment of the present specification.

[0068] Referring to FIG. 5, a blocking sheet (S) can be placed on a sheet attachment device (100). At this stage, the elevation unit (120) can be positioned at a height corresponding to the height of the upper surface of the fixing unit (110). The central region of the blocking sheet (S) can be seated on the elevation unit (120), and both side regions of the blocking sheet (S) can be seated on the two fixing units (110). At this time, the position of the blocking sheet (S) can be guided by the fixing hole (H, shown in FIGS. 1 and 4) formed in the blocking sheet (S) being seated on the first fixing pin (111) protruding from the upper surface of the fixing unit (110).

[0069] Referring to Fig. 6, when the blocking sheet (S) is mounted on the sheet attachment device (100), the battery module (B) can be mounted on the blocking sheet (S) at a position corresponding to the position of the lifting member (120). At this time, the position of the battery module (B) can be guided by inserting the mounting hole (M, shown in Fig. 1) provided in the battery module (B) into the second fixing pin (121) protruding from the lifting member (120). The surface of the battery module (B) that comes into contact with the blocking sheet (S) can be attached to the blocking sheet (S) due to its weight.

[0070] Referring to Fig. 7, when the worker initiates the lowering operation of the lifting unit (120), the central region of the battery module (B) and the blocking sheet (S) can be lowered together with the lifting unit (120). At this stage, the two side regions of the blocking sheet (S) are folded upward, and the fixing hole (H) of the blocking sheet (S) can be separated from the first fixing pin (111).

[0071] As the elevator unit (120) descends, the two roller units (130) and the blocking sheet (S) may come into contact. From the point at which the roller units (130) and the blocking sheet (S) come into contact, the roller unit (130) may begin to press the blocking sheet (S) toward the edge of the battery module (B). Through this, the blocking sheet (S) may be attached to the edge of the battery module (B) by the roller unit (130). Up to this stage, the gap between the two roller units (130) may be smaller than the width of the battery module (B).

[0072] Referring to Fig. 8, as the lifter (120) is lowered further, the battery module (B) can be placed between two roller units (130). The roller units (130) can press the blocking sheet (S) toward the side of the battery module (B).

[0073] Specifically, as the two roller parts (130) are pushed outward by the battery module (B), the gap between the two roller parts (130) can be widened to a gap corresponding to the width of the battery module (B). More specifically, after the edge portion of the battery module (B) comes into contact with the roller member (131b) constituting each of the two roller parts (130), the side of the battery module (B) can slide along the roller member (131b) and be lowered. At this time, the two roller parts (130) can be widened to the width of the battery module (B) as the roller member (131b) elastically moves outward. Since the roller member (131b) continuously has an elastic restoring force applied inward, the two roller parts (130) can continuously press the blocking sheet (S) toward the battery module (B) while the battery module (B) is lowered.

[0074] In this way, since the two roller parts (130) continuously press the battery module (B) from the corner part to the side part of the battery module (B), the blocking sheet (S) arranged between the two roller parts (130) and the battery module (B) can be continuously pressed against the battery module (B) up to the corner part and the side part of the battery module (B). Through this, the problem of the blocking sheet (S) being separated (i.e., lifted) at the corner part of the battery module (B) can be solved, and the quality of the battery module (B) can be improved.

[0075] Referring to FIG. 9, the lifting member (120) can be lowered until at least a portion of the two roller members (130) reaches a position higher than the upper surface of the battery module (B). As a result, the blocking sheet (S) can be primarily attached to the battery module (B) across the lower surface, corners, and side surfaces of the battery module (B).

[0076] Thereafter, when the worker initiates the upward movement of the lifting unit (120), the two roller units (130) can press the blocking sheet (S) once more toward the battery module (B), and accordingly, the blocking sheet (S) can be secondarily attached to the side and corner portions of the battery module (B).

[0077] After going through the above process, the attachment of the blocking sheet (S) to the battery module (B) can be completed, but for more secure attachment of the blocking sheet (S), the processes of FIGS. 7 to 9 and their reverse order can be repeated.

[0078] Any or all of the embodiments of this specification described above are not mutually exclusive or distinct. Any or all of the embodiments of this specification described above may have their respective components or functions combined or used together.

[0079] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0080] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of this specification should be determined by a reasonable interpretation of the appended claims, and all changes within the equivalent scope of this specification are intended to be embraced therein.

Claims

1. Two-part fixing member configured to allow each side area of ​​the blocking sheet to be secured; and It includes a lifting part provided between the two parts of the above-mentioned fixed part and on which the central area of ​​the blocking sheet is settled, The above lifting member guides folding so that the blocking sheet wraps around at least both sides of the battery module by lowering in response to the settling of the battery module. Sheet attachment device.

2. In paragraph 1, The two parts of the above-mentioned fixed part are provided so as to face each other, and further include two roller parts that press the blocking sheet toward the battery module as the above-mentioned lifting part descends. Sheet attachment device.

3. In paragraph 2, The above two roller parts are provided with a gap smaller than the width of the battery module when the lifting part is raised, and when the lifting part is lowered, the two roller parts are elastically deformed outward by the battery module and are mutually separated with a gap corresponding to the width of the battery module. Sheet attachment device.

4. In paragraph 3, Each of the two roller sections includes a roller row (raw) including a base section relatively fixed to the fixing section, a roller member that directly presses the battery module and elastically moves outward with respect to the base section, and a support section connecting the base section and the roller member. Sheet attachment device.

5. In paragraph 2, Each of the above two roller sections includes a plurality of roller rows arranged in a vertical direction. Sheet attachment device.

6. In paragraph 5, At least one of the plurality of roller rows includes a plurality of roller members sharing axes with each other. Sheet attachment device.

7. In paragraph 5, Any one of the plurality of roller rows includes a plurality of roller members that share axes with each other and form a gap therebetween, Another of said plurality of roller rows comprises at least one roller member that overlaps the gap vertically. Sheet attachment device.

8. In paragraph 1, It further includes a driving unit positioned below the lifting unit and a shaft connecting the lifting unit and the driving unit, The above-mentioned elevator is raised and lowered electrically by the operation of the above-mentioned driving unit. Sheet attachment device.

9. In paragraph 1, Further comprising an elastic member disposed below the above-mentioned elevator, The above lifting unit is raised and lowered in response to the weight of the battery module. Sheet attachment device.

10. In paragraph 1, The above fixing member includes at least one first fixing pin that protrudes from the upper surface of the fixing member and is positioned corresponding to the position of the fixing hole formed in the blocking sheet in a state where the blocking sheet is unfolded, thereby guiding the position of the blocking sheet before folding. Sheet attachment device.

11. In paragraph 10, A sheet attachment device configured such that the position of the first fixing pin is adjustable according to the size of the blocking sheet or the position of the fixing hole formed in the blocking sheet.

12. In paragraph 10, The upper surface of the first fixed pin and the side of the fixed pin that is positioned farther away from the lifting part have a cut-off shape. Sheet attachment device.

13. In paragraph 1, The above lifting member includes at least one second fixing pin that protrudes from the upper surface of the above lifting member and is positioned corresponding to the position of the mounting hole formed in the battery module. When the battery module is mounted on the lift, the mounting hole is mounted on the second fixing pin. Sheet attachment device.

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