Sheet attachment apparatus

Abstract

A sheet attachment apparatus is provided. A sheet attachment apparatus according to an embodiment of the present disclosure includes: a fixing portion having two portions on which both side regions of a barrier sheet are placed, respectively; and a lifting portion provided between the two portions of the fixing portion such that the central region of the blocking sheet is placed thereon. The lifting portion, in response to placement of the battery module, descends in a manner that guides folding of the barrier sheet such that the barrier sheet surrounds at least two sides of the battery module. Other embodiments are also possible.

Description

Technical Field

[0001] This disclosure relates to a sheet attachment device. More specifically, this disclosure relates to a sheet attachment device for effectively attaching a flame-retardant / heat-insulating sheet to the outer peripheral surface of a battery module. Background Technology

[0002] Lithium-ion batteries store and generate electrical energy through the insertion and extraction of lithium ions in the positive and negative electrodes. Lithium-ion batteries are known to have excellent storage capacity, voltage, and lifespan, and can be used in laptops, smartphones, and electric vehicles.

[0003] Lithium-ion batteries are typically manufactured by connecting multiple battery cells in series and / or parallel. Specifically, multiple battery cells can be electrically connected to each other and housed within a module housing to form a battery module. Furthermore, battery modules can be used individually, or two or more of them can be connected in series and / or parallel to form a higher-level device, such as a battery pack.

[0004] However, when many battery modules are densely packed in a limited space to form a battery pack as described above, the battery pack may be prone to fire. For example, heat propagation may occur within a battery module, and high-temperature gases may be emitted from at least one battery cell. In particular, when heat propagation occurs in a particular battery cell or battery module, it may spread to surrounding battery cells or battery modules and other battery packs.

[0005] As a measure to prevent the spread of heat, a structure is typically proposed that covers the outer peripheral surface of the battery module housing with a barrier sheet having flame-retardant and heat-insulating properties. Such a barrier sheet can cover the surface of the battery module where heat spread occurs, as well as the two adjacent sides.

[0006] Typically, the attachment of the blocking plate is performed by using a fixture for attaching the blocking plate to attach the blocking plate to the upper surface of the battery module while the battery module is in a fixed state, and by folding the two sides of the blocking plate to attach it to the two sides of the battery module.

[0007] However, in conventional sheet attachment solutions, there is a problem where the blocking sheet is not properly attached to the edge of the battery module and separates from the battery module.

[0008] Furthermore, this separation of the blocking sheet has become one of the reasons for the degradation of the battery module's quality. Summary of the Invention

[0009] Technical issues The technical objective of this disclosure is to provide a sheet attachment device that can solve the problem of the blocking sheet not being properly attached to the edge of the battery module, thereby solving at least some of the problems of the prior art.

[0010] In addition, the technical objective of this disclosure is to provide a sheet attachment device that improves the quality of battery modules.

[0011] Technical solution An exemplary embodiment of the present disclosure provides a sheet attachment device comprising: a fixing portion having two parts on which side regions of a blocking sheet are respectively disposed; and a lifting portion disposed between the two parts of the fixing portion, wherein a central region of the blocking sheet is disposed on the lifting portion, wherein the lifting portion is configured to guide the folding of the blocking sheet by lowering in response to the placement of a battery module, thereby covering at least two sides of the battery module.

[0012] This solves the problem of the barrier not being properly attached to the edge of the battery module.

[0013] In addition, the quality of the battery module can be improved by solving the problem of the separation of the blocking sheet.

[0014] Additionally, it may include two rollers, which are respectively disposed on two parts of the fixed part facing each other, and configured to press the blocking sheet toward the battery module side as the lifting part descends.

[0015] When the lifting unit has risen, the two rollers can be set with a gap smaller than the width of the battery module, and when the lifting unit falls, the two rollers are configured to separate from each other with a gap corresponding to the width of the battery module while elastically deforming outward through the battery module.

[0016] Each of the two roller portions may include a roller row comprising: a base fixed relative to the fixed portion; a roller member configured to directly press the battery module and elastically move outward relative to the base; and a support portion configured to connect the base and the roller member.

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

[0018] At least one of the multiple roll rows may include multiple roll members that share a common axis with each other.

[0019] One of the multiple roll rows may include multiple roll members that are spaced apart from each other and share an axis, and another of the multiple roll rows may include at least one roll member that overlaps with the gap in the vertical direction.

[0020] It may also include: a drive unit disposed below the lifting unit; and a shaft configured to connect the lifting unit and the drive unit, wherein the lifting unit can be electrically raised and lowered by operation of the drive unit.

[0021] It may also include an elastic member disposed below the lifting unit, and the lifting unit can be raised and lowered in accordance with the weight of the battery module.

[0022] The fixing part may include at least one first fixing pin, which protrudes from the upper surface of the fixing part, is positioned corresponding to the fixing hole formed in the blocking piece in the unfolded state, and is configured to guide the blocking piece in the position before folding.

[0023] The position of the first fixing pin can be adjusted according to the size of the blocking plate or the position of the fixing hole formed in the blocking plate.

[0024] The upper surface of the first fixing pin and the side surface of the fixing pin that is away from the lifting part may have a cut-off shape.

[0025] The lifting part may include at least one second fixing pin, which protrudes from the upper surface of the lifting part and is positioned corresponding to the mounting hole formed in the battery module. When the battery module is placed on the lifting part, the mounting hole may be located on the second fixing pin.

[0026] Technical effect The sheet attachment device according to the exemplary embodiment can solve the problem that the blocking sheet is not properly attached to the edge of the battery module.

[0027] According to an exemplary embodiment, the quality of a battery module can be improved by solving the problem of barrier separation. Attached Figure Description

[0028] Figure 1 This is a perspective view showing a sheet attachment device, a battery module, and a blocking sheet according to exemplary embodiments of the present disclosure, showing the lifting portion of the sheet attachment device in a raised state.

[0029] Figure 2 This is a cross-sectional view showing the lifting section of the sheet attachment device according to an exemplary embodiment of the present disclosure in a raised state.

[0030] Figure 3 This is a perspective view showing the lowered state of the lifting section of the sheet attachment device according to an exemplary embodiment of the present disclosure.

[0031] Figure 4 This is an enlarged view showing a portion of a sheet attachment device according to an exemplary embodiment of the present disclosure.

[0032] Figures 5 to 9This is a cross-sectional view illustrating the process of attaching a barrier sheet to a battery module via a sheet attachment device according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0033] Before describing exemplary embodiments of this disclosure, the terms or words used in this disclosure and the appended claims are not limited to their general or dictionary definitions, and are to be interpreted in accordance with the principle that the inventor can appropriately define the concepts of the terms in order to best describe his invention. Therefore, the exemplary embodiments described in this disclosure and the configurations shown in the accompanying drawings are merely the most desirable exemplary embodiments and do not represent all the technical spirit of this disclosure. It should be understood that various equivalents and modifications may exist to replace the exemplary embodiments and configurations at the time of filing this application.

[0034] The same reference numerals or symbols shown in the various figures of this specification indicate parts or components that perform substantially the same function. For ease of description and understanding, the same reference numerals or symbols may be used to describe different embodiments. That is, even if parts with the same reference numerals are shown in multiple figures, the multiple figures do not represent a single exemplary embodiment.

[0035] In the following description, unless there is an obvious and contextual conflict, singular terms include plural terms. For example, terms such as "comprising" or "including" are used to indicate the presence of features, quantities, operations, actions, elements, components, or combinations thereof. It should be understood that these terms do not preclude the possibility that one or more other features, numbers, operations, actions, elements, components, or combinations thereof may be present or added.

[0036] In addition, it should be noted in advance that the descriptions of, for example, upper side, upper surface, lower side, lower surface, side, front surface or rear surface are based on the orientation shown in the accompanying drawings, and these descriptions may change when the orientation of the corresponding object changes.

[0037] Furthermore, in this specification and claims, terms including ordinal numbers such as "first" or "second" may be used to distinguish elements. These ordinal numbers are used to differentiate identical or similar parts from one another, and the meaning of the terms should not be interpreted restrictively by using these ordinal numbers. As an example, elements combined with such ordinal numbers should not be construed as restricting the order of use or arrangement by numbers. The various ordinal numbers may be used interchangeably if necessary.

[0038] In the following description, exemplary embodiments will be illustrated with reference to the accompanying drawings. However, the spirit of this disclosure is not limited to the exemplary embodiments presented. As examples, those skilled in the art who understand the spirit of this disclosure may suggest other exemplary embodiments included within the scope of the spirit of this disclosure by adding, modifying, or deleting elements; however, these are also considered to be included within the scope of the spirit of this disclosure. For clarity, the shapes and dimensions of the elements in the drawings may be enlarged.

[0039] Figure 1 This is a perspective view showing a sheet attachment device, a battery module, and a blocking sheet according to exemplary embodiments of the present disclosure, showing the lifting portion of the sheet attachment device in a raised state. Figure 2 This is a cross-sectional view showing the lifting section of the sheet attachment device according to an exemplary embodiment of the present disclosure in a raised state. Figure 3 This is a perspective view showing the lowered state of the lifting section of the sheet attachment device according to an exemplary embodiment of the present disclosure. Figure 4 This is an enlarged view showing a portion of a sheet attachment device according to an exemplary embodiment of the present disclosure.

[0040] In the following description, the case where the battery module B is mounted on the sheet attachment device 100 in an inverted position will be used as an example. This is because the sheet attachment device 100 needs to surround the upper surface of the battery module B, which has vent holes, and the two adjacent sides thereto. However, this disclosure is not limited to this; for the case where the battery module B has bottom venting, the battery module B can be mounted on the sheet attachment device 100 in a non-inverted position.

[0041] In the following text, based on Figure 1 Regardless of whether battery module B is inverted or not, the surface located on the bottom side of battery module B is called the "lower surface" of battery module B, and the surface located on the top side of battery module B is called the "upper surface" of battery module B.

[0042] Reference Figures 1 to 3 The sheet attachment device 100 may include a fixing part 110. The fixing part 110 may consist of two parts. The two parts of the fixing part 110 may be respectively disposed on both sides of the lifting part 120. The fixing part 110 may be a part that is fixed in the vertical direction relative to the lifting part 120. The two side regions of the blocking sheet S may be respectively disposed on the two parts of the fixing part 110.

[0043] Reference Figures 1 to 4The 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. When the blocking piece S is in the unfolded state, the first fixing pin 111 may be configured to correspond to the position of the fixing hole H formed in the blocking piece S. For example, the fixing hole H of the blocking piece S may be formed in the edge regions on both sides of the blocking piece S, and the first fixing pin 111 may be provided at each of the two portions of the fixing portion 110 at the position corresponding to the fixing hole H of the blocking piece S. The fixing hole H of the blocking piece S may be disposed on the first fixing pin 111. The first fixing pin 111 may guide the position of the blocking piece S before folding.

[0044] The position of the first fixing pin 111 can be adjusted according to the size of the blocking plate S or the position of the fixing hole H formed in the blocking plate S, and can correspond to the shape and size of the blocking plate S or the battery module B. For example, the position of the fixing pin 111 can be finely adjusted in the front-back direction or in two lateral directions. Due to the variability of the position of the first fixing pin 111, the versatility of the sheet attachment device 100 can be expanded.

[0045] Reference Figure 4 The first retaining pin 111 may have a clearance shape that does not interfere with the retaining hole H of the blocking piece when the blocking piece S is folded. For example, the cylindrical first retaining pin 111 may have a shape in which the portion between the upper surface 111a of the first retaining pin 111 and the side surface 111b of the first retaining pin 111, which is set away from the lifting part, has a cut-off shape (e.g., a rounded or chamfered shape). Therefore, during the process of the retaining hole H of the blocking piece S separating from the first retaining pin 111 when the lifting part 120 descends, the retaining hole H can be easily separated from the first retaining pin 111, and the problem of the blocking piece S being torn or damaged can be prevented accordingly.

[0046] For a similar purpose, the fixing hole H of the blocking plate S has a larger area (i.e., edge area) than the space occupied by the first fixing pin 111, thereby minimizing the possibility of interference between the first fixing pin 111 and the blocking plate S.

[0047] Reference Figures 1 to 3 The sheet attachment device 100 may include a lifting section 120. The lifting section 120 may be disposed 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. Thus, when the blocking sheet S is initially placed on the lifting section 120 and the fixing section 110, the blocking sheet S can be placed in a fully unfolded state without wrinkles. However, this disclosure is not limited to this; depending on the unfolded shape of the blocking sheet S, when the lifting section 120 is raised, the height of the upper surface of the lifting section 120 and the height of the upper surface of the fixing section 110 may be different.

[0048] The lifting unit 120 can move up and down relative to the fixed unit 110. The lifting unit 120 can descend in response to the placement of the battery module B. The lifting unit 120 can guide the folding of the blocking plate S to cover at least two sides of the battery module B by moving up and down. (Referring below...) Figures 4 to 7 The process of attaching the blocking plate S by means of the up-and-down movement of the lifting unit 120 is described in detail.

[0049] The central region of the blocking plate S can be mounted on the lifting part 120. Specifically, before the blocking plate S is attached to the battery module B, the blocking plate S can be in an unfolded state and span the fixed part 110 and the lifting part 120, which have two parts. When the blocking plate S is mounted on the sheet attachment device 100 in this state, the central region of the blocking plate S can be located on the lifting part 120, and its two side regions can be located on the two parts of the fixed part 110 respectively.

[0050] The lifting section 120 may include at least one second fixing pin 121. The second fixing pin 121 may protrude from the upper surface of the lifting section 120. The second fixing pin 121 may be configured to correspond 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 in the vertical direction at the four corners of the battery module B, and the second fixing pin 121 may be formed accordingly at the four corners of the lifting section 120. When the battery module B is placed on the lifting section 120, the mounting hole M of the battery module B may be positioned on the second fixing pin 121. The second fixing pin 121 may guide the placement position of the battery module B. Thus, the operator can easily place the battery module B in the appropriate position.

[0051] The sheet attachment device 100 may include rollers 130. Rollers 130 may be configured to correspond to each of the two portions of the fixing portion 110. The two rollers 130 may be configured to face each other and press the blocking sheet S against the battery module B.

[0052] When the lifting section 120 has risen, the two roller sections 130 may have a gap smaller than the width of the battery module B. Furthermore, when the lifting section 120 descends, the two roller sections 130 may move away from each other while elastically deforming outwards through the battery module B, forming a gap 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. This will be described later with reference to the roller member 131b.

[0053] Reference Figure 2 and Figure 3Each of the two roller sections 130 may include a roller row 131. Multiple roller rows 131 may be provided. Multiple roller rows 131 may be arranged vertically at each roller section 130. For example, refer to... Figures 2 to 4 The multiple roller rows 131 may include a first roller row 1311 and a second roller row 1312 arranged in the vertical direction. When multiple roller rows 131 are provided, the attachment of the blocking sheet S can be effectively performed, and the blocking sheet S can be repeatedly pressed against the battery module B.

[0054] However, this disclosure is not limited thereto. If the blocking sheet S can be properly attached to the battery module B using only one roller row 131, then only one roller row 131 may be provided. Alternatively, more than three roller rows 131 may be provided to ensure better attachment of the blocking sheet S.

[0055] Reference Figure 2 Each roller array 131 may include a base 131a. The base 131a may be a portion that is fixed relative to the fixing portion 110. The base 131a may be fixed below the upper surface of the fixing portion 110.

[0056] Each roller row 131 may include a roller member 131b. The roller member 131b may pivot about an axis extending in the front-rear direction. The roller member 131b may be the part that presses the blocking plate S directly against the battery module B. Because the roller member 131b is rotatable, the battery module B can be smoothly raised or lowered even when pressed by the roller member 131b.

[0057] The roller member 131b can move elastically outward relative to the base 131a. Specifically, when the battery module B descends, the roller member 131b can be pushed by the battery module B and move elastically outward. Here, when the elastic restoring force acting on the battery module B continues to act, the roller member 131b can effectively press the blocking plate S against 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 by the elastic restoring force.

[0058] Each roller bank 131 may include a support portion 131c connecting a base 131a and a roller member 131b. The support portion 131c may be configured to pass through the base 131a in the lateral direction. The support portion 131c may slide relative to the base 131a. A separate elastic member (not shown) may be provided between the base 131a and the support portion 131c, and this elastic member may provide the support portion 131c with elasticity acting in the inward direction when the support portion 131c slides in the outward direction relative to the base 131a.

[0059] At least one of the multiple roll rows 131 may include multiple roll members 131b that share a common axis with each other. For example, see reference to Figure 3 The first roller row 1311 can be configured such that the three roller members 131b share an axis with each other, and the second roller row 1312 can be configured such that the two roller members 131b share an axis with each other.

[0060] Specifically, due to the rotating structure of the roller member 131b, the support portion 131c supporting the roller member 131b can be connected to both ends of the roller member 131b, and the elastic restoring force of the roller member 131b can be transmitted through the support portion 131c. When each roller row 131 is formed into a long roller member 131b, since the middle region of the roller member 131b is not supported by the support portion 131c, the elastic restoring force of the roller member 131b can be transmitted to the middle region, and the blocking piece S in the region corresponding to the middle region of the roller member 131b may not be properly attached to the battery module B. However, according to the exemplary embodiment of this disclosure, when each roller row 131 is formed with multiple roller members 131b, the shortened roller member 131b receives the force of the support portion 131c individually, thus solving the problem that the middle region of the roller member 131b cannot sufficiently press the blocking piece S against the battery module B.

[0061] However, this disclosure is not limited thereto, and each roller row 131 may be formed with one roller member 131b, provided that sufficient elastic restoring force can be provided over the entire area of ​​the roller member 131b from the support portion 131c connected to the two ends of the roller member 131b due to the high rigidity of the roller member 131b.

[0062] The gap formed by the plurality of roller members 131b forming one roller row 131 can overlap with at least one roller member forming another roller row 131 in the vertical direction. For example, refer to Figure 3 The gap formed by the three roller members 131b forming the first roller row 1311 can overlap with the two roller members 131b forming the second roller row 1312 in the vertical direction. Thus, the incomplete attachment of the blocking piece S at the gap formed in one roller row 131 can be accomplished by the roller member 131b of the other roller row 131.

[0063] Reference Figure 2 The sheet attachment device 100 may include a drive unit 140. The drive unit 140 may be disposed below the lifting unit 120. The drive unit 140 may provide lifting and lowering forces to the lifting unit 120. The drive unit 140 may be configured as an electrical device, such as a motor. The lifting unit 120 may be electrically raised and lowered by operation of the drive unit 140. However, this disclosure is not limited thereto, and it may be configured as a device operated using a mechanical mechanism, such as a hydraulic cylinder or a pneumatic cylinder.

[0064] The sheet attachment device 100 according to an exemplary embodiment of the present disclosure may include a shaft 150. The shaft 150 may connect the lifting section 120 and the drive section 140. The shaft 150 may transmit the lifting force and the lowering force generated at the drive section 140 to the lifting section 120.

[0065] In this configuration, after the battery module B is positioned on the lifting section 120 on which the blocking plate S is placed, the lifting section 120 can descend when the operator initiates its descent. Conversely, the lifting section 120 can ascend when the operator initiates its ascent from the descending position. The descent and / or ascent of the lifting section 120 can be performed using buttons located on a portion of the sheet attachment device 100.

[0066] On the other hand, the sheet attachment device 100 may include an elastic member (not shown). The elastic member (not shown) may be disposed below the lifting section 120. The lifting section 120 may be raised or lowered according to the weight of the battery module B. In this case, when the operator places the battery module B onto the lifting section 120, the lifting section 120 may lower due to the weight of the battery module B. After the lifting section 120 has lowered to the target position, when the operator lifts the battery module B again, the lifting section 120 may rise again, whereby the operator can easily lift the battery module B with the help of the elasticity of the elastic member (not shown).

[0067] Figures 5 to 8 This is a cross-sectional view illustrating the process of attaching a barrier sheet to a battery module using a sheet attachment device according to an exemplary embodiment of the present disclosure.

[0068] Reference Figure 5 The blocking plate S can be disposed on the sheet attachment device 100. At this stage, the lifting part 120 can be positioned at a height corresponding to the height of the upper surface of the lifting part 120 and the upper surface of the fixing part 110. The central region of the blocking plate S can be disposed on the lifting part 120, and the two side regions of the blocking plate S can be disposed on the two parts of the fixing part 110. Here, when the fixing hole H formed in the blocking plate S (e.g., Figure 1 and Figure 4 When the plate (as shown) is placed on the first fixing pin 111 protruding from the upper surface of the fixing part 110, it can guide the position of the blocking piece S.

[0069] Reference Figure 6 With the blocking plate S positioned on the sheet attachment device 100, the battery module B can be placed on the blocking plate S at a position corresponding to the position of the lifting part 120. Here, due to the mounting hole M (such as...) provided in the battery module B... Figure 1(As shown) It can be inserted into the second fixing pin 121 protruding from the lifting part 120, so that the position of the battery module B can be guided. Regarding the battery module B, due to the weight of the battery module B, the surface in contact with the blocking plate S can be attached to the blocking plate S.

[0070] Reference Figure 7 When the operator begins the lowering movement of the lifting unit 120, the central area of ​​the battery module B and the blocking plate S can descend together with the lifting unit. During this stage, when the two sides of the blocking plate S fold upwards, the fixing hole H of the blocking plate S can separate from the first fixing pin 111.

[0071] When the lifting unit 120 descends, the two rollers 130 can contact the blocking plate S. From the point of contact between the rollers 130 and the blocking plate S, the rollers 130 can begin to press the blocking plate S towards the edge of the battery module B. Thus, the blocking plate S can be pressed against and attached to the edge of the battery module B by the rollers 130. Until this stage, the gap between the two rollers 130 can be less than the width of the battery module B.

[0072] Reference Figure 8 As the lifting section 120 descends further, the battery module B can be positioned between the two roller sections 130. The roller sections 130 can press the blocking sheet towards one side of the battery module B.

[0073] Specifically, when the two rollers 130 are pushed outward by the battery module B, the gap between the two rollers 130 can be widened to correspond to the width of the battery module B. More specifically, after the edge contacts the roller member 131b forming each of the two rollers 130, the battery module B can descend as the side of the battery module B slides against the roller member 131b. Here, when the roller member 131b moves elastically outward, the two rollers 130 can move apart from each other and form a gap corresponding to the width of the battery module B. Since the elastic restoring force continuously acts inward on the roller member 131b, the two rollers 130 can continuously press the blocking plate S against the battery module B when the battery module descends.

[0074] Therefore, since the two rollers 130 continuously press the battery module B from the edge to the side, the blocking plate S disposed between the two rollers 130 and the battery module B can continuously press the battery module B from the edge to the side. This solves the problem of the blocking plate S separating from the edge of the battery module B (i.e., detaching), thereby improving the quality of the battery module B.

[0075] Reference Figure 9The lifting section 120 can descend until at least a portion of the two roller sections 130 reaches a position above the upper surface of the battery module B. Therefore, the blocking plate S can be attached to the battery module B primarily on its lower surface, edges, and sides.

[0076] Then, when the operator resumes the upward movement of the lifting section 120, the two rollers 130 can press the blocking plate S against the battery module B again, and the blocking plate S can press against the side and edge of the battery module B a second time.

[0077] The attachment of the blocking plate S to the battery module B can be accomplished by performing the above process; however, to ensure proper attachment of the blocking plate S, the process can be repeated. Figures 7 to 9 The process shown in the diagram is the process in the reverse order.

[0078] The exemplary embodiments or other exemplary embodiments of this disclosure described above are not mutually exclusive or conflict with each other. The configurations or functions of the exemplary embodiments of this disclosure or the other exemplary embodiments described above can be used together or combined with each other.

[0079] For example, configuration "A" described in one exemplary embodiment and / or the accompanying drawings can be combined with configuration "B" described in another exemplary embodiment and / or the accompanying drawings. That is, although the combination between configurations is not directly described, such a combination is possible unless it is described as impossible.

[0080] The detailed description should not be construed as restrictive, but rather as illustrative in all respects. The scope of this disclosure will be determined through a reasonable analysis of the appended claims, and all modifications within the equivalent scope of this disclosure are included within its scope.

Claims

1. A sheet attachment apparatus, the sheet attachment apparatus comprising: The fixing part has two parts, and the two sides of the blocking piece are respectively disposed on the two parts; as well as A lifting part is disposed between the two parts of the fixed part, and the central area of ​​the blocking plate is disposed on the lifting part. The lifting unit is configured to guide the folding of the blocking sheet by lowering in response to the placement of the battery module, thereby covering at least two sides of the battery module.

2. The sheet attachment device according to claim 1 further includes two rollers, which are respectively disposed facing each other on two portions of the fixing portion and configured to press the blocking sheet toward the battery module as the lifting portion descends.

3. The sheet attachment device according to claim 2, wherein, When the lifting section has risen, the two rollers are positioned with a gap smaller than the width of the battery module, and When the lifting section descends, the two rollers are configured to separate from each other by a gap corresponding to the width of the battery module while elastically deforming outward through the battery module.

4. The sheet attachment device according to claim 3, wherein, Each of the two roller sections includes a roller bank, the roller bank comprising: The base portion that is fixed relative to the fixing portion; A roller member configured to directly press the battery module and elastically move outward relative to the base; and A support portion is configured to connect the base portion and the roller component.

5. The sheet attachment device according to claim 2, wherein, Each of the two roller sections includes multiple rows of rollers arranged in the vertical direction.

6. The sheet attachment apparatus according to claim 5, wherein, At least one of the plurality of roller rows includes a plurality of roller components that share a common axis with each other.

7. The sheet attachment device according to claim 5, wherein, One of the plurality of roller rows includes a plurality of roller members, the plurality of roller members being spaced apart from each other and sharing a common axis, and Another of the plurality of roller rows includes at least one roller member that overlaps with the gap in the vertical direction.

8. The sheet attachment apparatus according to claim 1, further comprising: The drive unit is located below the lifting unit; as well as A shaft is configured to connect the lifting unit and the driving unit. The lifting unit is configured to be electrically raised and lowered by the operation of the drive unit.

9. The sheet attachment device according to claim 1 further includes an elastic member disposed below the lifting section. in, The lifting mechanism is configured to lift in accordance with the weight of the battery module.

10. The sheet attachment device according to claim 1, wherein, The fixing part includes at least one first fixing pin, which protrudes from the upper surface of the fixing part, is positioned corresponding to the fixing hole formed in the blocking sheet in the unfolded state of the blocking sheet, and is configured to guide the blocking sheet in its position before folding.

11. The sheet attachment apparatus according to claim 10, wherein, The position of the first fixing pin can be adjusted according to the size of the blocking plate or the position of the fixing hole formed in the blocking plate.

12. The sheet attachment apparatus according to claim 10, wherein, The upper surface of the first fixing pin has a cut-off shape between the side surface of the fixing pin that is away from the lifting part.

13. The sheet attachment device according to claim 1, wherein, The lifting part includes at least one second fixing pin, which protrudes from the upper surface of the lifting part and is positioned corresponding to a mounting hole formed in the battery module. When the battery module is placed on the lifting part, the mounting hole is placed on the second fixing pin.

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