EP4688354A1

EP4688354A1 - A device for disassembling a vehicle battery moudule

Info

Publication number: EP4688354A1
Application number: EP24711880.5A
Authority: EP
Inventors: Lei Wan; Jun Wang; Xiao Ping MAO; Yu Heng HE
Original assignee: Stellantis Auto SAS
Current assignee: Stellantis Auto SAS
Priority date: 2023-04-07
Filing date: 2024-03-14
Publication date: 2026-02-11
Also published as: WO2024208557A1; CN118769853A

Abstract

The present disclosure discloses a device for disassembling a vehicle battery module. The vehicle battery module is arranged on a counter piece along a vertical direction, and a flexible adhesive layer is arranged provided between the vehicle battery module and the counter piece. The device includes a cutting wire and a coiling wheel, wherein the cutting wire is arranged to correspond to the adhesive layer, and the first end of the cutting wire is fixed, the second end of the cutting wire is used for being pulled, and the coiling wheel includes a wheel body and a wheel axle fixedly connected with the wheel body; and the coiling wheel is arranged to be a wheel axle in the vertical direction, and the second end of the cutting wire is connected to the wheel body. The device is configured that the cutting wire is wound and pulled by the coiling wheel to cut the adhesive layer when the coiling wheel is rotated. When the device according to the present disclosure is used, the coiling wheel is used for pulling the cutting wire to cut the adhesive layer, and an operator does not need to directly pull the cutting wire by hands, thereby facilitating the operation of an operator and helping to prevent the operator from being injured.

Description

A DEVICE FOR DISASSEMBLING A VEHICLE BATTERY MOUDULE

This invention claims the priority of the Chinese patent application 202310366560.8 filed on April 07, 2023, of which the content (Text, Drawings and Claims) is incorporated by reference.

RELATED FIELD

[0001] The present disclosure relates to the technical field of vehicles, and in particular to a device for disassembling of a vehicle battery module.

BACKGROUND

[0002] A new energy vehicle is usually equipped with a battery pack which provides power for the vehicle. The battery pack generally includes a battery module and a cooling plate in thermal conductivity contact with the battery module so as to keep the battery module in a proper temperature environment.

[0003] Thermally conductive adhesive is typically applied between the battery module and the cooling plate to closely bond the battery module and the thermally conductive plate together and reduce thermal resistance. When failure occurs to the battery pack, the battery module and the cooling plate need to be separated from each other for separate detection.

[0004] Patent document FR10272502B1 discloses a battery pack. The housing of the battery pack includes a top cover, a bottom cover, and a sealing gasket between the top cover and the bottom cover. The top cover and the bottom cover are connected together at their edges. The battery pack also includes a cutting wire for cutting the sealing gasket. In the solution of the patent document, the cutting wire needs to be directly pulled by a hand to cut the sealing gasket, making the operation inconvenient for an operator.

SUMMARY

[0005] Regarding the aforementioned technical problem, the present disclosure provides a device for disassembling a vehicle battery module. The vehicle battery module is arranged on a counter piece along a vertical direction, and a flexible adhesive layer is provided between the vehicle battery module and the counter piece. The device comprises: a cutting wire arranged to correspond to the adhesive layer, a first end of the cutting wire is fixed, and a second end of the cutting wire is used for being pulled; and a coiling wheel including a wheel body and a wheel axle fixedly connected to the wheel body, the coiling wheel is arranged in a way that the wheel axle is along the vertical direction, and the second end of the cutting wire is connected to the wheel body; the device is configured in a way that when the coiling wheel is rotated, the cutting wire is wound and pulled by the coiling wheel to cut the adhesive layer.

[0006] In an embodiment, the device further includes a bracket, and the bracket is provided with at least one vertical threaded hole; the wheel axle includes a first end portion located at a first side of the wheel body, and the first end portion is provided with threads, so as to be screwed into the threaded hole.

[0007] In an embodiment, the wheel axle further includes a second end portion, and the second end portion is located at a second side of the wheel body opposite to the first side, and the second end portion is used to be driven to rotate.

[0008] In an embodiment, the bracket is strip-shaped and arranged along an edge of the vehicle battery module; the bracket is provided with a plurality of threaded holes, and the plurality of threaded holes are spaced apart along an extension direction of the edge of the vehicle battery module, so that a position of the coiling wheel is adjustable along with the winding of the cutting wire.

[0009] In an embodiment, the wheel body includes a rod body assembled with the wheel axle; the rod body includes a winding portion for winding the cutting wire, and a surface of the winding portion is rough.

[0010] In an embodiment, the winding portion is configured to have a cross-sectional size that gradually decreases along a vertical upward direction.

[0011] In an embodiment, the rod body has a hollow structure, and the wheel axle is directed through the rod body; two stop pieces are arranged on the wheel axle, and the two stop pieces correspond respectively to two ends of the rod body to hold the wheel body on the wheel axle fixedly.

[0012] In an embodiment, a barrier sheet is arranged between each of the stop pieces and a corresponding end of the rod body; one barrier sheet is provided with a connecting hole, and the second end of the cutting wire is connected to the connecting hole.

[0013] In an embodiment, a size of the barrier sheet is larger than a size of the corresponding end of the rod body.

[0014] In an embodiment, a smooth notch is configured at a radially outer edge of the barrier sheet provided with the connecting hole; the cutting wire extends through the notch and is connected to the connecting hole.

[0015] In an embodiment, the cutting wire is a glass fiber-reinforced nylon wire.

[0016] In an embodiment, a diameter of the cutting wire is less than a distance between the vehicle battery module and the counter piece.

[0017] The benefits of the present disclosure are as follows: when using the device according to the present disclosure, the coiling wheel is used for pulling the cutting wire to cut the adhesive layer, and an operator does not need to directly pull the cutting wire by hands, thereby facilitating the operation of an operator and avoiding the operator from being injured. In addition, the coiling wheel is arranged in a way that the wheel axle thereof is along the vertical direction so that the position of the cutting wire on the coiling wheel may be adjusted in real-time along with the progress of cutting operation. The height of the cutting wire is thus kept unchanged or basically unchanged, and then the cutting wire is prevented from making contact with the vehicle battery module and the counter piece, thereby helping to prevent the vehicle battery module and/or the counter piece from being damaged, so that the vehicle battery module and/or the counter piece can be recycled as needed, and the cutting resistance may be reduced also. In addition, the device arranged in the present disclosure is simple in structure and low in manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used for explaining the present disclosure, and do not constitute an improper limitation on the present disclosure. In the drawings:

[0019] FIG. 1 schematically shows a structure of a vehicle battery pack according to an embodiment of the prior art;

[0020] FIG. 2 schematically shows a device for disassembling a vehicle battery module according to an embodiment of the present disclosure, and a cutting wire is omitted in the figure;

[0021] FIG. 3 schematically shows a coiling wheel in a perspective view;

[0022] FIG. 4 schematically shows the coiling wheel in a side view;

[0023] FIG. 5 schematically shows a structure of a wheel axle;

[0024] FIG. 6 schematically shows a schematic diagram of cutting an adhesive layer using the device; and

[0025] FIG. 7 schematically shows a method of disassembling a vehicle battery module from a counter piece.

DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the technical solutions of the present disclosure are clearly and completely described below with reference to specific embodiments of the present disclosure and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without any creative efforts shall fall within the protection scope of the present disclosure.

[0027] As shown in FIG. 1, generally, a vehicle battery pack 1 includes a vehicle battery module 101 and a counter piece 102, and the vehicle battery module 101 is arranged on the counter piece 102 along a vertical direction H. In an embodiment, the counter piece 102 is a cooling plate, and the vehicle battery module 101 is arranged on the cooling plate. The cooling plate is used for heat dissipation of the vehicle battery module 101, so that the vehicle battery module 101 works in a proper temperature range. Optionally, the cooling plate may be a conventional liquid cooling plate, and certainly may also be other types of conventional heat dissipation components. In the present disclosure, the term “vertical direction” refers to a direction generally perpendicular to the counter piece 102.

[0028] A flexible adhesive layer 103 is also provided between the vehicle battery module 101 and the counter piece 102 to securely bond the vehicle battery module 101 and the counter piece 102 together. In addition, the adhesive layer 103 also has good thermal conductivity, for example, the adhesive layer 103 may be a thermally conductive adhesive layer, so as to ensure the heat dissipation effect of the vehicle battery module 101. A person skilled in the art may select appropriate commercially available adhesive to form the adhesive layer 103 according to needs, and details are not described herein again.

[0029] Optionally, as shown in FIG. 1, the vehicle battery pack 1 further includes a housing 10. The vehicle battery module 101 and the counter piece 102 are both arranged in the housing 10. When the vehicle battery module 101 needs to be disassembled from the counter piece 102, at least part of the housing 10 may be removed to expose the vehicle battery module 101 and the counter piece 102. In an embodiment, as shown in FIG. 6, the housing 10 is generally cuboid-shaped; and correspondingly, the vehicle battery module 101 is also generally cuboid-shaped. Of course, the housing 10 and/or the vehicle battery module 101 may also be configured in other shapes as required, which is easily implemented by a person skilled in the art. For the sake of simplicity, a cuboid-shaped vehicle battery module 101 is taken as an example to describe the device 2 for disassembling the vehicle battery module in the present disclosure.

[0030] FIG. 2 schematically shows a device 2 for disassembling a vehicle battery module (hereinafter referred to as a device 2) according to an embodiment of the present disclosure. As shown in FIG. 2 and FIG. 3, the device 2 includes a cutting wire 20 (as shown in FIG. 6) and a coiling wheel 30 for winding the cutting wire 20. The cutting wire 20 is arranged to correspond to the adhesive layer 103. A first end 201 of the cutting wire 20 is fixed, and a second end 202 of the cutting wire 20 is used to be pulled. The coiling wheel 30 includes a wheel body 320 and a wheel axle 310 fixedly connected with the wheel body 320. The coiling wheel 30 is arranged in a way that the wheel axle 310 is in the vertical direction H. The second end 202 of the cutting wire 20 is connected to the wheel body 320. In this way, the device 2 is configured that when the coiling wheel 30 is rotated, the cutting wire 20 is wound and pulled by the coiling wheel 30 to cut the adhesive layer 103.

[0031] When the vehicle battery module 101 is disassembled from the counter piece 102 by using the device 2 according to the present disclosure, the coiling wheel 30 is used to pull the cutting wire 20 to cut the adhesive layer 103. In the process, an operator does not need to directly pull the cutting wire 20 by hand, thereby facilitating the operation of the operator, and helping to prevent the operator from being injured. In addition, the coiling wheel 30 is arranged in a way that the wheel axle 310 of the coiling wheel 30 is in the vertical direction H. In this way, the position of the cutting wire 20 on the coiling wheel 30 can be adjusted in real time along with the progress of cutting operation, so that a height of the cutting wire 20 is kept unchanged or basically unchanged, and then the cutting wire 20 is prevented from making contact with the vehicle battery module 101 and the counter piece 102, which helps to prevent the cutting wire 20 from being damaged, and also prevent the vehicle battery module 101 and/or the counter piece 102 from being damaged. In this way, the vehicle battery module 101 and/or the counter piece 102 can be recycled according to needs, and the cutting resistance is reduced. In addition, the device 2 is simple in structure and low in manufacturing cost.

[0032] In an embodiment, the first end 201 of the cutting wire 20 may be fixed at an appropriate position of the vehicle battery module 101 (or the vehicle battery pack 1) (as shown in FIG. 6), which may be determined according to actual situations and not limited herein. In other embodiments, the first end 201 of the cutting wire 20 may also be fixed at any suitable location other than the vehicle battery pack 1.

[0033] Optionally, as shown in FIG. 2, the device 2 further includes a bracket 40, and at least one vertical threaded hole 411 is provided in the bracket 40. As shown in FIG. 3 and FIG. 4, the wheel axle 310 includes a first end portion 311 on the first side of the wheel body 320. The first end portion 311 is provided with threads so that it may be screwed into the threaded hole 411. According to the configuration, the first end portion 311 of the wheel axle 310 is threadedly coupled to the threaded hole 411. When the coiling wheel 30 is rotated to tighten the cutting wire 20, the first end portion 311 is locked with the threaded hole 411 through threaded connection. When the rotational drive force applied to the coiling wheel 30 is removed, rapid rotation in the reverse direction, caused by the pulling of the tensioned cutting wire 20, of the wheel axle 310 (and the coiling wheel 30) does not occur, which helps to prevent the operator from being injured, and also facilitates the operator to intermittently rotate the coiling wheel 30 according to actual situations so as to intermittently pull the cutting wire 20 to move.

[0034] As also shown in FIG. 2 and FIG. 6, in an embodiment, the bracket 40 is strip-shaped and arranged along the edge 110 of the vehicle battery module 101. A plurality of threaded holes 411 are provided in the bracket 40, and the plurality of threaded holes 411 are spaced apart along the extension direction of the edge 110 of the vehicle battery module 101. In the process of cutting the adhesive layer 103, the position of the coiling wheel 30 (the position Pl, the position P2, and the position P3 as shown in FIG.6) may be adjusted with the progress of the cutting operation (ie, as the cutting wire 20 is wound on the coiling wheel 30). At each position of the coiling wheel 30, the cutting wire 20 is required to move only a smaller size to cut a shorter size of the adhesive layer 103 (eg, the size of the cut adhesive layer 103 is approximately equal to the distance between two adjacent positions of the coiling wheel 30). Thus, at each position of the coiling wheel 30, the wheel axle 310 only needs to be screwed into the corresponding threaded hole 411 to a small depth, so as to wind the corresponding part of the cutting wire 20. Therefore, the wheel axle 310, the rod body 323 and the threaded hole 411 do not need to have a large length, which greatly facilitates the manufacturing and use of the disassembling device 2.

[0035] In an embodiment, as shown in FIG. 2 and FIG. 6, the bracket 40 includes a guide plate 410 arranged along the edge 110 of the vehicle battery module 101 and a base 420 bearing the guide plate 410. An open of each threaded hole 411 is on the top surface 412 of the guide plate 410. In a specific embodiment, the guide plate 410 and the base 420 together form a structure having a generally T-shaped cross section, which helps to improve the stability of the bracket 40.

[0036] Optionally, as also shown in FIG. 4, the wheel axle 310 further includes a second end portion 312. The second end portion 312 is located at a second side of the wheel body 320 opposite to the first side and is used for being driven to rotate. Therefore, when the second end portion 312 is screwed, the wheel body 320 has less influence on the screwing operation, facilitating the operation of an operator.

[0037] In an embodiment, as shown in FIG. 3 and FIG. 4, a flange 314 extending radially outward is provided on the second end portion 312. The flange 314 may be provided with patterns to facilitate manual screwing of the flange 314, or a tool may also be used to screw the flange 314. For example, a torque wrench may be used to screw the flange 314 to precisely control the movement of the cutting wire 20. In other embodiments, the second end portion 312 also may be provided with a torque bar (not shown in the figures) generally perpendicular to the wheel axle 310, which also facilitates the manual operation of the flange 314.

[0038] In other embodiments, the wheel axle 310 may also be driven to rotate by using a motor (not shown in the figures), which is not described herein.

[0039] Optionally, the cutting wire 20 is a glass fiber-reinforced nylon wire. The nylon wire has high tensile strength to avoid being broken due to high cutting resistance in the process of the cutting operation of the adhesive layer 103. In addition, the nylon wire is flexible and easy to bend. In the process of the cutting operation of the adhesive layer 103, strong rigid collision between the nylon wire and the vehicle battery module 101 and/or the counter piece 102 does not occur, and thus the vehicle battery module 101 and/or the counter piece 102 may not be seriously damaged, facilitating the recycling of the vehicle battery module 101 and/or the counter piece 102 according to needs. In addition, the flexible nylon wire is easy to store. In a specific embodiment, in a nylon wire, the glass fiber content may be 30% by weight. Of course, a person skilled in the art can also use nylon wires with the content of the glass fibers as other numerical values according to needs, or cutting wires made of other materials may also be used, which is not limited herein. In other embodiments, a steel wire may also be used as the cutting wire.

[0040] Optionally, a diameter of the cutting wire 20 is smaller than the size of the gap between the vehicle battery module 101 and the counter piece 102. Therefore, in the process of the cutting operation, the cutting wire 20 hardly touches the vehicle battery module 101 and the counter piece 102 or only occasionally makes friction contact with the vehicle battery module 101 and the counter piece 102 to avoid causing damage to the vehicle battery module 101 and/or the counter piece 102, thereby facilitating the recycling of the vehicle battery module 101 and/or the counterpart 102 as needed. In addition, the cutting wire 20 does not contact the vehicle battery module 101 and the counter piece 102, which helps to reduce the cutting resistance, thus facilitating an operator to operate the cutting wire 20.

[0041] In an embodiment, the size of the gap between the vehicle battery module 101 and the counter piece 102 is between 1.5 mm and 2 mm. The diameter of the cutting wire 20 is between 0.5 mm and 1 mm. In this way, it is further avoided that the cutting wire 20 makes contact with the vehicle battery module 101 and the counter piece 102 in the process of the cutting operation. In addition, the diameter of the cutting wire 20 is small, and thus the cutting resistance may be reduced, which facilitates the operator to operate the cutting wire 20. It should be understood that a person skilled in the art may also set the gap between the vehicle battery module 101 and the counter piece 102 to other sizes according to actual situation; and correspondingly, the diameter of the cutting wire 20 can also be other sizes.

[0042] Optionally, as shown in FIG. 3 and FIG. 4, the wheel body 320 includes a rod body 323 assembled with the wheel axle 310. The rod body 323 includes a winding portion 325 for winding the cutting wire 20, and the surface of the winding portion 325 is a rough surface. In this way, in the process of the cutting operation, the cutting wire 20 may be smoothly wound on the winding portion 325, and unsuccessful winding of the cutting wire 20, due to the cutting wire 20 slipping relative to the winding portion 325 (or the rod body 323), does not occur.

[0043] Optionally, as shown in FIG. 3 and FIG. 4, the winding portion 325 is configured to have a cross-sectional size that gradually decreases along a vertical upward direction (ie, along a direction from the counter piece 102 to the vehicle battery module 101). As a whole, the surface of the winding portion 325 is generally an inclined surface. In this way, during the process of the cutting operation, as the coiling wheel 30 moves vertically downward (ie, the first end portion 311 of the wheel axle 310 is gradually screwed into the threaded hole 411), the cutting wire 20 adaptively moves upward under the guidance of the winding portion 325 in the form of a slope, so that the height of the cutting wire 20 is automatically kept generally unchanged to avoid the cutting wire 20 from making contact with the vehicle battery module 101 and the counter piece 102. In an embodiment, the winding portion 325 is in a generally circular truncated cone shape, and the diameter of the cross-section of the winding portion 325 gradually decreases in the vertical upward direction.

[0044] In an embodiment, the cutting wire 20 may be wound over the entire rod body 323. In this case, the entire rod body 323 serves as a winding portion 325 and can be generally configured in a conical shape, a concave arc shape, etc. In another embodiment, only a portion of the rod body 323 serves as a winding portion 325. In this case, only the winding portion 325 may be generally configured in a conical shape, a concave arc shape, etc. (as shown in FIG. 3 and FIG. 4).

[0045] Optionally, the rod body 323 is of a hollow structure, and the wheel axle 310 is directed through the rod body 323 to make the wheel body 320 and the wheel axle 310 assembled together. According to the structure, the wheel axle 310 and the wheel body 320 may be conveniently disassembled and assembled so as to be maintained and replaced respectively. In other embodiments, the wheel axle 310 and the wheel body 320 may also be fixedly connected together to form a unitary component. In an embodiment, as shown in FIG. 5, the wheel axle 310 also includes a middle portion 313 located between the first end portion 311 and the second end portion 312. In this way, the wheel body 320 and the middle portion 313 are fitted together.

[0046] As shown in FIG. 3 and FIG. 4, two stop pieces 331 are arranged on the wheel axle 310, and the two stop pieces 331 correspond respectively to the two ends of the rod body 323 so as to hold the wheel body 320 on the wheel axle 310 fixedly.

[0047] In an embodiment, the second end portion 312 is provided with threads. In addition, as previously described, the first end portion 311 is also provided with threads. In this case, the two stop pieces 331 may both be nuts. The two nuts are mounted to the first end portion 311 and the second end portion 312 respectively to limit the two ends of the rod body 323, respectively, thereby stably retaining the wheel body 320 on the wheel axle 310. In addition, the position of the wheel body 320 on the wheel axle 310 may be adjusted by adjusting the positions of the nuts on the wheel axle 310 according to the actual situation, so that the cutting wire 20 is aligned with the adhesive layer 103 and the height of the cutting wire 20 is kept generally unchanged.

[0048] In another embodiment, one of the stop pieces 331 may be a step (not shown) on the wheel axle 310 and the other one of the stop pieces 331 may be a nut. In this way, the wheel body 320 can also be stably held on the wheel axle 310, and the position of the wheel body 320 on the wheel axle 310 can also be adjusted.

[0049] It should also be understood that the stop pieces 331 may also be other detachable limiting members other than the nuts, and details are not described herein again.

[0050] Optionally, as shown in FIG. 3 and FIG. 4, a barrier sheet 321 is arranged between each of the stop pieces 331 and a corresponding end of the rod body 323. The barrier sheet 321 increases a pressed area of the corresponding end of the rod body 323, providing protection for the rod body 323. In addition, the barrier sheet 321 also helps to prevent the detachable stop pieces 331 (for example, the nuts) from loosening, thereby further stably holding the wheel body 320 on the wheel axle 310.

[0051] As shown in FIG. 3, one barrier sheet 321 is provided with a connecting hole 322, and a second end 202 of the cutting wire 20 is connected into the connecting hole 322. Compared with a connecting structure (for example, a through hole, a boss and the like) that is used for being connected with the second end 202 of the cutting wire 20 provided on the rod body 323, the connecting hole 322 is more convenient to be provided in the barrier sheet 321, and disassembly and assembly of the cutting wire 20 is more convenient. Of course, the above mentioned connecting structure can also be provided on the rod body 323 according to actual situation.

[0052] In an embodiment, two connecting holes 322 may be provided on one barrier sheet

321 (as shown in FIG. 3). Of course, only one connecting hole 322 or more connecting holes

322 may be provided on one barrier sheet 321.

[0053] Optionally, as shown in FIG. 3 and FIG. 4, the size of the barrier sheet 321 is larger than the size of the corresponding end of the rod body 323. In this way, in the process of winding the cutting wire 20, the two barrier sheets 321 guide the cutting wire 20 to be wound on the rod body 323 or the winding portion 325, which helps to enable the cutting operation to be proceeded smoothly. In an embodiment, the barrier sheet 321 is generally circular (as shown in FIG. 3 and FIG. 4), and the rod body 323 is connected between the circle centers of the two barrier sheets 321. Radial dimensions of the barrier sheet 321 is not limited herein, as long as the barrier sheet 321 is capable of guiding the cutting wire 20 to be wound on the rod body 323 or the winding portion 325, and do not hinder the rotation of the coiling wheel 30. In an embodiment, one of the barrier sheets can be configured to be smaller in size and the other barrier sheet is larger in size, which facilitates an operator to observe the winding condition of the cutting wire 20 on the rod body 323 or the winding portion 325 in real time. It should be understood that the barrier sheet 321 may also be configured in other shapes, respectively, which is not limited herein.

[0054] In an embodiment, the rod body 323 and the two barrier sheets 321 are made of metal material (for example, steel, aluminum alloy, etc.), and the rod body 323 and the two barrier sheets 321 are welded together. In this way, the wheel body 320 is formed as an integral member and is assembled with the wheel axle 310, which helps to simplify the assembly of the device 2. In other embodiments, the two barrier sheets 321 and the rod body 323 can be integrally formed.

[0055] Optionally, as shown in FIG. 3, a smooth notch 324 is provided at the radial outer edge of the barrier sheet 321 in which connecting hole 322 is provided. The cutting wire 20 is directed through the notch 324 and connected into the connecting hole 322. Optionally, the notch 324 corresponds to the connecting hole 322 so as to facilitate connecting the cutting wire 20 to the connecting hole 322. According to the structure, when the cutting wire 20 is wound, the cutting wire 20 is guided by the notch 324, so that the cutting wire 20 is smoothly wound on the rod body 323 or the winding portion 325, avoiding entanglement of the cutting wire 20. In addition, the edge of the notch 324 is smooth, which prevents the cutting wire 20 from being cut.

[0056] A method of disassembling a vehicle battery module 101 from a counter piece 102 by using the device 2 is described below. As shown in FIG. 7, the method comprises the following steps:

[0057] Step 1 : arranging the bracket 40 to be generally parallel to the edge 110 of the vehicle battery module 101;

[0058] Step 2: wrapping the cutting wire 20 around the vehicle battery module 101 and aligning the cutting wire 20 with the adhesive layer 103. Fixing the first end 201 of the cutting wire 20 to the vehicle battery module 101, and connecting the second end 202 to the wheel body 320;

[0059] Step 3: inserting the first end portion 311 of the wheel axle 310 into the threaded hole 411 in the bracket 40. Rotating the coiling wheel 30 so as to gradually wind the cutting wire 20. Meanwhile, the cutting wire 20 is pulled to cut the adhesive layer 103; and

[0060] Step 4: after the adhesive layer 103 is cut, separating the vehicle battery module 101 from the counter piece 102, thereby completing the disassembly of the vehicle battery module 101.

[0061] In an embodiment, during step 3, after the coiling wheel 30 at one position winds a predetermined length of the cutting wire 20, taking the wheel axle 310 out of the threaded hole 411 at the position and inserting the wheel axle 310 into the threaded hole 411 at the next predetermined position, and then rotating the coiling wheel 30 again to wind the cutting wire 20. Repeat the operation until the cutting of the adhesive layer 103 is completed. The “predetermined length of the cutting wire” herein can be calculated, for example, by counting the number of rotations of the coiling wheel 30, which is easily implemented by a person skilled in the art and will not be elaborated herein.

[0062] It should be noted that, in the present disclosure, the sequence number is not used to limit the actual operation steps, but to facilitate the description of the method of the present disclosure. In fact, a person skilled in the art may adjust the sequence of implementing certain steps according to actual situation.

[0063] LIST OF REFERENCE NUMBERS

1 vehicle battery pack

10 housing

101 vehicle battery module

110 edge of the vehicle battery module

102 counter piece

103 adhesive layer 2 device for disassembling a vehicle battery module

20 cutting wire

201 first end of the cutting wire

202 second end of the cutting wire

30 coiling wheel

310 wheel axle

311 first end portion

312 second end portion

313 middle portion

314 flange

320 wheel body

321 barrier sheet

322 connecting hole

323 rod body

324 notch

325 winding portion

331 stop pieces

40 bracket

410 guide plate

411 threaded hole

412 top surface of the guide plate

420 base

H vertical direction

[0064] The above are only embodiments of the present disclosure and are not intended to limit the present disclosure. For a person skilled in the art, various modifications and changes can be made to the present disclosure. Any modification, equivalent replacement, improvement and the like made within the principle of the present disclosure shall fall within the scope of the claims of the present disclosure.

Claims

1. A device for disassembling a vehicle battery module, the vehicle battery module (101) is arranged on a counter piece (102) along a vertical direction (H), and a flexible adhesive layer (103) is provided between the vehicle battery module (101) and the counter piece (102); wherein the device (2) comprises: a cutting wire (20) arranged to correspond to the adhesive layer (103), a first end (201) of the cutting wire (20) is fixed, and a second end (202) of the cutting wire (20) is used for being pulled; and a coiling wheel (30) including a wheel body (320) and a wheel axle (310) that is fixedly connected to the wheel body (320); the coiling wheel (30) is arranged in a way that the wheel axle (310) is along the vertical direction(H), and the second end (202) of the cutting wire (20) is connected to the wheel body (320); the device (2) is configured in a way that when the coiling wheel (30) is rotated, the cutting wire (20) is wound and pulled by the coiling wheel (30) to cut the adhesive layer (130).

2. The device according to claim 1, wherein the device (2) further includes a bracket (40), and the bracket (40) is provided with at least one vertical threaded hole (411); the wheel axle (310) includes a first end portion (311) located at a first side of the wheel body (320), and the first end portion (311) is provided with threads so as to be screwed into the threaded hole (411).

3. The device according to claim 2, wherein the wheel axle (310) further includes a second end portion (312), and the second end portion (312) is located at a second side of the wheel body (320) opposite to the first side and used to be driven to rotate.

4. The device according to claim 2, wherein the bracket (40) is strip-shaped and arranged along an edge (110) of the vehicle battery module (101); the bracket (40) is provided with a plurality of threaded holes (411), and the plurality of threaded holes (411) are spaced apart along an extension direction of the edge (110) of the vehicle battery module (101), so that a position of the coiling wheel (30) is adjustable along with the winding of the cutting wire (20).

5. The device according to claim 1, wherein the wheel body (320) includes a rod body (323) assembled with the wheel axle (310); the rod body (323) includes a winding portion (325) for winding the cutting wire (20), and a surface of the winding portion (325) is rough.

6. The device according to claim 5, wherein the winding portion (325) is configured to have a cross-sectional size that gradually decreases along a vertical upward direction.

7. The device according to claim 5, wherein the rod body (323) has a hollow structure, and the wheel axle (310) is directed through the rod body (323); two stop pieces (331) are arranged on the wheel axle (310), and the two stop pieces (331) correspond respectively to two ends of the rod body (323) to hold the wheel body (320) on the wheel axle (310) fixedly.

8. The device according to claim 7, wherein a barrier sheet (321) is arranged between each of the stop pieces (331) and a corresponding end of the rod body (323); one barrier sheet (321) is provided with a connecting hole (322), and the second end (202) of the cutting wire (20) is connected to the connecting hole (322).

9. The device according to claim 8, wherein a size of the barrier sheet (321) is larger than a size of the corresponding end of the rod body (323).

10. The device according to claim 8, wherein a smooth notch (324) is configured at a radially outer edge of the barrier sheet (321) provided with the connecting hole (322); and the cutting wire (20) extends through the notch (324) and is connected to the connecting hole (322).

11. The device according to claim 1, wherein the cutting wire (20) is a glass fiber-reinforced nylon wire.

12. The device according to claim 1, wherein a diameter of the cutting wire (20) is less than a distance between the vehicle battery module (101) and the counter piece (102).