Battery disassembling device

Abstract

The utility model provides a battery disassembling device, which comprises a fixed base, which comprises a fixed assembly and a bottom plate, and the fixed assembly is used for fixing a battery shell on the upper surface of the bottom plate; the first end of the transverse rod faces the battery shell, a blind hole is formed in the end face of the transverse rod, a telescopic compression spring is horizontally arranged in the blind hole, and one end of the compression spring is fixed to the bottom of the blind hole; the moving part is fixedly connected with the cross rod and can move around the side wall of the battery shell; the nicking tool comprises a transversely-arranged tool bar part and a tool nose part fixed to the front end of the tool bar part, the tail end of the tool bar part is movably arranged in the blind hole and fixedly connected with the other end of the compression spring, and the tool nose part extends out of the blind hole and can abut against the side wall of the battery shell; and when the moving part moves around the side wall of the battery shell, the cutter point part can cut the side wall of the battery shell. According to the battery disassembling device, the problem that the cutting force and the cutting route are difficult to control is solved, and the cutting efficiency and precision are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery disassembly, and in particular to a battery disassembly device. Background Art

[0002] The top cover and shell of a lithium-ion battery are usually welded together. In order to study the internal causes of battery cell failure during R&D and production, it is necessary to disassemble the sample battery or disassemble the used battery for recycling. Since the battery shell, such as an aluminum shell, is usually only about 1mm thick and is close to the battery cell inside, it cannot be disassembled using larger tools such as cutting machines that are prone to sparks. The current common method of battery disassembly is for the experimenter to use a utility knife to carve grooves on the shell, and then use diagonal pliers to tear open the shell at the grooves for disassembly. This method of battery disassembly has the problem of difficulty in controlling the cutting force and cutting route, which makes it easy to get stuck during cutting, and the cut grooves often deviate from the predetermined route, reducing cutting efficiency and accuracy; there is also the risk of scratching the experimenter and scratching the battery cell inside the shell. Utility Model Content

[0003] The technical problem to be solved by the present disclosure is that it is difficult to control the cutting force and cutting route in the existing battery disassembly method.

[0004] To solve the above technical problems, the present disclosure provides a battery disassembly device for cutting open a battery casing, comprising:

[0005] A fixed base, the fixed base includes a fixing assembly and a bottom plate, the fixing assembly is used to fix the battery housing to the upper surface of the bottom plate;

[0006] A crossbar, wherein the first end of the crossbar is arranged toward the battery housing, a blind hole is formed on the end surface of the first end, a compression spring is horizontally arranged in the blind hole, one end of the compression spring is fixed to the bottom of the blind hole, and the compression spring can move telescopically in the blind hole;

[0007] a moving member fixedly connected to the crossbar and capable of moving around a side wall of the battery housing; and

[0008] The carving knife includes a horizontally arranged knife bar portion and a knife tip portion fixed to the front end of the knife bar portion, the tail end of the knife bar portion is movably arranged in the blind hole and fixedly connected to the other end of the compression spring, and the knife tip portion extends to the outside of the blind hole and can abut the side wall of the battery housing;

[0009] When the moving member moves around the side wall of the battery housing, the blade tip can cut the side wall of the battery housing.

[0010] In some embodiments, the fixing assembly includes two first clamping plates that are opposite to each other and spaced apart along the X-axis, and a first sliding groove extending along the X-axis direction is provided in the central portion of the upper surface of the base plate. The bottoms of the two first clamping plates can be slidably set in the first sliding groove, and the two first clamping plates are used to clamp the battery casing along the X-axis direction.

[0011] In some embodiments, the fixing assembly also includes two second clamping plates that are opposite and spaced apart along the Y-axis, and a second sliding groove extending along the Y-axis direction is also provided in the central part of the upper surface of the base plate. The bottoms of the two second clamping plates can be slidably set in the second sliding groove, and the two second clamping plates are used to clamp the battery casing along the Y-axis direction.

[0012] In some embodiments, the fixing assembly further includes a locking structure for locking the first clamping plate and the second clamping plate at desired positions in the first sliding groove and the second sliding groove, respectively.

[0013] In some embodiments, the locking structure includes four vertically arranged fixing plates and bolts, each fixing plate is arranged parallel to the outer side of the corresponding splint and its bottom is fixed to the base plate, and a penetrating threaded hole is provided on the fixing plate along its thickness direction; the bolt includes a screw portion, a part of the screw portion is passed through the threaded hole and the two are threadedly matched, and the front end of the screw portion is fixedly connected to the corresponding splint.

[0014] In some embodiments, a sliding base is provided at the bottom of the moving member, a third sliding groove surrounding the battery housing is provided on the upper surface of the bottom plate, and the sliding base can be slidably provided in the third sliding groove.

[0015] In some embodiments, the battery housing is square, and the third slide groove is formed by sequentially connecting four linear slide grooves that are respectively parallel to the four side walls of the battery housing.

[0016] In some embodiments, the movable member is a vertical rod, and the upper end of the vertical rod is fixedly connected to the second end of the horizontal rod.

[0017] In some embodiments, the vertical rod is a telescopic rod, which is used to adjust the height of the carving knife.

[0018] In some embodiments, the battery housing is made of aluminum.

[0019] Through the above-described technical solution, the battery disassembly device provided by the present disclosure is capable of efficiently and accurately cutting battery casings. Before cutting, the battery casing is secured by a fixing assembly, effectively preventing accidental movement or tipping during the disassembly process and improving operational safety. During cutting, the movable member is controlled to move around the outside of the battery casing, driving the crossbar and the cutting blade to move synchronously, so that the blade tip cuts the sidewall of the battery casing. The cutting blade maintains a stable height during movement and precisely cuts along a predetermined path, making the cutting process more accurate. The blade tip, urged by a compression spring, maintains a constant pressure on the sidewall of the battery casing, keeping the cutting pressure within a desired range. This not only ensures continuous and stable cutting, but also adapts to surface irregularities or minor deformations of the battery casing to a certain extent, mitigating potential damage to the cutting blade or battery casing due to changes in cutting resistance, thereby improving cutting accuracy and efficiency. Therefore, the battery disassembly device improves cutting efficiency and accuracy. Furthermore, the battery disassembly device offers advantages such as a compact structure, simple and safe operation, and ease of assembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 It is a schematic structural diagram of a battery disassembly device disclosed in an embodiment of the present disclosure;

[0022] Figure 2 is a structural schematic diagram of a fixed base disclosed in an embodiment of the present disclosure;

[0023] Figure 3 It is a partial structural schematic diagram of the bottom plate of the fixed base disclosed in the embodiment of the present disclosure;

[0024] Figure 4 It is a structural schematic diagram of the carving knife disclosed in the embodiment of the present disclosure;

[0025] Figure 5 It is a cross-sectional schematic diagram of the assembly structure of the engraving knife, compression spring and cross bar disclosed in the embodiment of the present disclosure.

[0026] Description of reference numerals:

[0027] 1. Fixed base; 11. Fixed assembly; 111. First clamping plate; 112. Second clamping plate; 113. Fixed plate; 114. Bolt; 12. Bottom plate; 121. First slide groove; 122. Second slide groove; 123. Third slide groove; 2. Moving part; 3. Cross bar; 31. Blind hole; 4. Compression spring; 5. Engraving knife; 51. Tool bar; 52. Tool tip; 53. Sliding part; 6. Sliding base; 7. Battery housing. DETAILED DESCRIPTION

[0028] The following embodiments of the present disclosure are further described in detail with reference to the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present disclosure, but are not intended to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.

[0029] The present disclosure provides these embodiments in order to make this disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0030] It should be noted that, in the description of this disclosure, unless otherwise specified, "plurality" means greater than or equal to two; terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are intended solely to facilitate and simplify the description of this disclosure, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] In addition, the terms "first," "second," and similar terms used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements.

[0032] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this disclosure depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0033] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0035] Example

[0036] Reference Figure 1-Figure 5 The present disclosure provides a battery disassembly device for cutting open a battery housing 7, comprising:

[0037] The fixed base 1 includes a fixing assembly 11 and a bottom plate 12. The fixing assembly 11 is used to fix the battery housing 7 to the upper surface of the bottom plate 12.

[0038] A crossbar 3, wherein the first end of the crossbar 3 is disposed toward the battery housing 7, and a blind hole 31 is formed on the end surface of the first end. A compression spring 4 is horizontally disposed in the blind hole 31, and one end of the compression spring 4 is fixed to the bottom of the blind hole 31. The compression spring 4 can move telescopically in the blind hole 31;

[0039] A moving member 2, which is fixedly connected to the crossbar 3 and can move around the side wall of the battery housing 7; and

[0040] The carving knife 5 includes a transversely arranged shank portion 51 and a knife tip portion 52 fixed to the front end of the shank portion 51. The tail end of the shank portion 51 is movably disposed in the blind hole 31 and fixedly connected to the other end of the compression spring 4. The knife tip portion 52 extends to the outside of the blind hole 31 and is capable of abutting the side wall of the battery housing 7.

[0041] When the moving member 2 moves around the side wall of the battery housing 7 , the blade tip 52 can cut the side wall of the battery housing 7 .

[0042] This dismantling device is used for cutting open battery case 7, so that take out the battery core in battery case 7.Before dismantling, battery case 7 is fixed on base plate 12 by fixing assembly 11, and base plate 12 can be arranged on frame, to improve the stability in dismantling process.When dismantling, by controlling the outside movement around battery case 7 of moving member 2, moving member 2 drives cross bar 3 and graver 5 to move synchronously, thereby makes the sidewall of battery case 7 of knife point 52 cut, and moving member 2 slides around the outside of battery case 7 for a week, and knife point 52 just can cut a circle to the sidewall of battery case 7.The knife point 52 of graver 5, owing to being pushed by compression spring 4, always keeps certain pressure to battery case 7 sidewall, this pressure not only guarantees the continuity and stability of cutting, can also adapt to the unevenness or slight deformation of battery case 7 surface to a certain extent, improves the precision and efficiency of cutting.

[0043] To ensure that the blade tip 52 can cut the battery housing 7, the compression spring 4 needs to be in a compressed state when the blade tip 52 abuts the battery housing 7. At this time, the compression spring 4 applies pressure to the blade rod 51, and the blade tip 52 forms a squeeze contact with the battery housing 7 and applies pressure to the battery housing 7. It is easy to understand that the compression spring 4 can be kept in a compressed state when the battery disassembly device is in operation by adjusting parameters such as the length of the carving knife 5, the length of the blind hole 31, the length of the compression spring 4, the length of the crossbar 3, and the distance between the moving part 2 and the battery housing 7.

[0044] Continue to refer to Figure 2-Figure 3 In some embodiments, the fixing assembly 11 includes two first clamping plates 111 that are opposite and spaced apart along the X-axis. A first slide groove 121 extending along the X-axis is provided in the central portion of the upper surface of the base plate 12. The bottoms of the two first clamping plates 111 can be slidably disposed in the first slide groove 121. The two first clamping plates 111 are used to clamp the battery casing 7 along the X-axis. The two first clamping plates 111 can be used to support the battery casing 7, thereby fixing the battery casing 7. In addition, the first clamping plates 111 can change the support position by sliding in the first slide groove 121, making the spacing between the two first clamping plates 111 adjustable, thereby being able to firmly support battery casings 7 of different sizes. Figure 1-Figure 3 The X-axis direction and the Y-axis direction shown in the figure are any two orthogonal directions of the plane where the base plate 12 is located, and the Z-axis direction is a direction perpendicular to the plane where the base plate 12 is located.

[0045] In some embodiments, the fixing assembly 11 may further include two second clamping plates 112 disposed opposite and spaced apart along the Y-axis. A second slide groove 122 extending along the Y-axis is further defined in the central portion of the upper surface of the base plate 12. The bottoms of the two second clamping plates 112 can be slidably disposed in the second slide groove 122. The two second clamping plates 112 are used to clamp the battery housing 7 along the Y-axis. The two second clamping plates 112 can limit and secure the battery housing 7 in the Y-axis direction, thereby improving the stability of the battery housing 7. The widths of the first slide groove 121 and the second slide groove 122 are both smaller than the maximum width of the bottom of the battery housing 7 to ensure that the battery housing 7 can be stably placed on the upper surface of the base plate 12; at the same time, the length of the first slide groove 121 is greater than the size of the bottom of the battery housing 7 in the X-axis direction, and the length of the second slide groove 122 is greater than the size of the bottom of the battery housing 7 in the Y-axis direction to ensure that the battery housing 7 will not completely cover the first slide groove 121 and the second slide groove 122, thereby ensuring that the first clamping plate 111 and the second clamping plate 112 can be respectively arranged in the first slide groove 121 and the second slide groove 122.

[0046] In some embodiments, the fixing assembly 11 further includes multiple locking structures for locking the first clamping plate 111 and the second clamping plate 112 into their respective desired positions within the first and second slide slots 121 and 122. Specifically, the locking structures include four vertically arranged fixing plates 113 and bolts 114. Each fixing plate 113 is arranged parallel to the outside of a corresponding clamping plate and its bottom is fixed to the base plate 12. A threaded hole is provided through the fixing plate 113 along its thickness. The bolt 114 includes a screw portion, a portion of which is inserted into the threaded hole and the two are threadedly engaged. The front end of the screw portion is fixedly connected to the corresponding clamping plate. The first and second clamping plates 111, 112, adjusted to their desired positions, are secured to the fixing plate 113 by bolts 114, thereby locking the first and second clamping plates 111, 112 and preventing them from moving. Furthermore, the first and second clamping plates 111, 112 can be pushed and pulled by rotating the bolts 114, conveniently adjusting the first and second clamping plates 111, 112 to their desired positions. The four fixing plates 113 can be connected as one piece to enhance their stability.

[0047] In some embodiments, a sliding base 6 is provided at the bottom of the movable member 2, and a third chute 123 is provided on the upper surface of the base plate 12, which surrounds the battery housing 7. The sliding base 6 is slidably disposed in the third chute 123. The cooperation between the third chute 123 and the sliding base 6 ensures that the movable member 2 can slide smoothly around the outside of the battery housing 7. At the same time, the movement path of the movable member 2 is determined by the third chute 123, which is convenient for the operator to operate and also facilitates connecting the movable member 2 to the drive device for automatic cutting.

[0048] In some embodiments, the battery housing 7 is square, and the third chute 123 is formed by sequentially connecting four linear chute grooves parallel to the four side walls of the battery housing 7. Furthermore, the connection between two linear chute grooves can be connected by an arc segment, which allows the sliding base 6 to smoothly transition from one chute groove to another.

[0049] In some embodiments, movable member 2 is a vertical rod, the upper end of which is fixedly connected to the second end of crossbar 3. The vertical rod supports crossbar 3 at a certain height above base plate 12, so that blade tip 52 can abut against the sidewall of battery housing 7 at the desired position. Furthermore, the vertical rod and crossbar 3 are integrally structured to enhance the vertical rod's ability to secure crossbar 3.

[0050] In some embodiments, the vertical rod is a telescopic rod that can be extended and retracted up and down to adjust the height of the carving knife 5. In actual use, after the first circle of the battery casing 7 is cut, the height of the carving knife 5 can be adjusted to a position above or below the height of the first circle of cutting by the telescopic rod, for example, 3 mm, and then the second circle of cutting is performed. The two circular cuts form two lines, and the shell between the two lines is torn off using diagonal pliers to complete the cutting. This operation method can more thoroughly separate the battery casing 7. The telescopic rod can be a conventional telescopic rod, as long as it can be extended and retracted up and down and the height of its upper end can be adjusted. The specific structure of the telescopic rod is not described in detail here.

[0051] Continue to refer to Figure 4-Figure 5 In some embodiments, the carving knife 5 further includes a sliding portion 53 disposed at the rear end of the shank portion 51. The sliding portion 53 is slidably connected to the blind hole 31. When the sliding portion 53 slides left and right in the blind hole 31, it drives the shank portion 51 to move left and right, thereby adjusting the position of the tip portion 52 so that the tip portion 52 can adapt to battery housings 7 of different sizes and abut the side wall of the battery housing 7. The shape of the sliding portion 53 is adapted to the shape of the blind hole 31. For example, the blind hole 31 is a circular hole, and the sliding portion 53 is cylindrical in shape. The sliding portion 53 is fixedly connected to the compression spring 4. Under the pressure of the compression spring 4, the tip portion 52 can press and contact the side wall of the battery housing 7, thereby cutting the side wall.

[0052] In some embodiments, the vertical distance between the blade tip 52 and the upper edge of the side wall of the battery housing 7 does not exceed 10 mm. For example, the vertical distance is 6 mm. This ensures that as little battery housing 7 as possible is cut, further preventing damage to the battery cells within the battery housing 7, while also ensuring that the battery housing 7 remains relatively intact after cutting.

[0053] In some embodiments, the battery housing 7 is made of aluminum. Aluminum is a preferred material for the battery housing 7, and the cutter 5 can effectively cut aluminum. Furthermore, the battery housing 7 is used in a lithium-ion battery, and a lithium-ion battery cell is disposed therein.

[0054] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0055] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A battery disassembly device for cutting open a battery casing (7), characterized in that: include: A fixed base (1), the fixed base (1) comprising a fixing assembly (11) and a base plate (12), the fixing assembly (11) being used to fix the battery housing (7) to the upper surface of the base plate (12); A cross bar (3), wherein a first end of the cross bar (3) is arranged toward the battery housing (7), a blind hole (31) is provided on an end surface of the first end, a compression spring (4) is horizontally arranged in the blind hole (31), one end of the compression spring (4) is fixed to the bottom of the blind hole (31), and the compression spring (4) can telescopically move in the blind hole (31); A moving member (2), the moving member (2) being fixedly connected to the crossbar (3) and being capable of moving around the side wall of the battery housing (7); and A carving knife (5), the carving knife (5) comprising a transversely arranged knife bar portion (51) and a knife tip portion (52) fixed to the front end of the knife bar portion (51), the tail end of the knife bar portion (51) being movably arranged in the blind hole (31) and fixedly connected to the other end of the compression spring (4), the knife tip portion (52) extending to the outside of the blind hole (31) and capable of abutting against the side wall of the battery housing (7); When the moving member (2) moves around the side wall of the battery housing (7), the knife tip (52) can cut the side wall of the battery housing (7).

2. The battery disassembly device according to claim 1, characterized in that: The fixing assembly (11) includes two first clamping plates (111) that are arranged opposite to each other and spaced apart along the X-axis. A first sliding groove (121) extending along the X-axis is provided at the central portion of the upper surface of the base plate (12). The bottoms of the two first clamping plates (111) can be slidably arranged in the first sliding groove (121). The two first clamping plates (111) are used to clamp the battery housing (7) along the X-axis.

3. The battery disassembly device according to claim 2, characterized in that: The fixing assembly (11) further includes two second clamping plates (112) that are arranged opposite to each other and spaced apart along the Y-axis. A second sliding groove (122) extending along the Y-axis is further provided in the central portion of the upper surface of the base plate (12). The bottoms of the two second clamping plates (112) can be slidably arranged in the second sliding groove (122). The two second clamping plates (112) are used to clamp the battery housing (7) along the Y-axis.

4. The battery disassembly device according to claim 3, characterized in that: The fixing assembly (11) further comprises a locking structure for locking the first clamping plate (111) and the second clamping plate (112) in desired positions in the first sliding groove (121) and the second sliding groove (122), respectively.

5. The battery disassembly device according to claim 4, characterized in that: The locking structure includes four vertically arranged fixing plates (113) and bolts (114), each of the fixing plates (113) is arranged in parallel to the outer side of the corresponding clamping plate and its bottom is fixed to the base plate (12), and a threaded hole is provided on the fixing plate (113) along its thickness direction; the bolt (114) includes a screw portion, a part of the screw portion is passed through the threaded hole and the two are threadedly matched, and the front end of the screw portion is fixedly connected to the corresponding clamping plate.

6. The battery disassembly device according to claim 1, characterized in that: A sliding base (6) is provided at the bottom of the movable member (2), a third sliding groove (123) surrounding the battery housing (7) is provided on the upper surface of the bottom plate (12), and the sliding base (6) can be slidably arranged in the third sliding groove (123).

7. The battery disassembly device according to claim 6, characterized in that: The battery housing (7) is square, and the third chute (123) is formed by sequentially connecting four linear chute grooves that are respectively parallel to four side walls of the battery housing (7).

8. The battery disassembly device according to claim 1, characterized in that: The movable member (2) is a vertical rod, and the upper end of the vertical rod is fixedly connected to the second end of the horizontal rod (3).

9. The battery disassembly device according to claim 8, characterized in that: The vertical rod is a telescopic rod, and the telescopic rod is used to adjust the height of the carving knife (5).

10. The battery disassembly device according to any one of claims 1 to 9, characterized in that: The battery housing (7) is made of aluminum.

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