Battery shell breaking device

Abstract

The utility model relates to the technical field of battery processing, in particular to a battery shell breaking device. The battery shell breaking device comprises a workbench, a motor frame, a motor, a blade, a mounting frame and a pressing plate, the motor frame is connected with the workbench, the motor is connected with the motor frame, and the blade is in transmission connection with the motor. The mounting frame is connected with the workbench, the pressing plate is movably connected with the mounting frame, and a through hole for the blade to pass through is formed in the area, right opposite to the blade, of the pressing plate. And the pressing plate is used for moving towards the direction close to the blade under the pressing action of the battery, so that at least part of the blade penetrates through the through hole to cut the shell of the battery. The battery shell breaking device is simple in structure and convenient to operate, the operation safety can be improved, the damage to the battery cell can be reduced, the operation efficiency can be improved, and the operation cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery processing technical field, specifically, relate to a battery shell breaking device. BACKGROUND

[0002] At present, when the battery is handled, the original shell needs to be removed, that is, the shell needs to be broken to facilitate the processing of the battery core. When the square aluminum shell battery is cut, the prior art adopts a handheld cutting machine to cut it. However, this method has corresponding safety risks and is easy to damage the battery core, and the operation efficiency is low. UTILITY MODEL CONTENTS

[0003] The utility model discloses a battery shell breaking device, which has simple structure, convenient operation, can improve the safety of operation, reduce the damage of the battery core, improve the operation efficiency and reduce the operation cost.

[0004] The embodiment of the utility model can be realized as follows:

[0005] The utility model provides a battery shell breaking device, and the battery shell breaking device comprises a workbench, a motor frame, a motor, a blade, a mounting frame and a pressing plate.

[0006] The motor frame is connected with the workbench, the motor is connected with the motor frame, and the blade is drivingly connected with the motor.

[0007] The mounting frame is connected with the workbench, the pressing plate is movably connected with the mounting frame, and the region of the pressing plate opposite to the blade is provided with a through hole for the blade to pass through.

[0008] The pressing plate is used for moving towards the direction close to the blade under the pressing action of the battery, so that at least part of the blade passes through the through hole and cuts the shell of the battery.

[0009] In the optional implementation, the mounting frame comprises two fixed plates and a plurality of movable connecting pieces.

[0010] The two fixed plates are fixedly connected with the workbench at intervals, and the pressing plate is connected with the two fixed plates through the plurality of movable connecting pieces.

[0011] In the optional implementation, each movable connecting piece comprises a first fixing piece, an elastic piece and a second fixing piece.

[0012] The first fixing piece is connected with the pressing plate, the second fixing piece is connected with the fixed plate, the first fixing piece and the second fixing piece are movably connected, the elastic piece is arranged at the movable connection position of the first fixing piece and the second fixing piece, and the elastic piece is used for making the first fixing piece have the trend of moving away from the side of the second fixing piece, so that the pressing plate has the trend of moving away from the blade.

[0013] In an optional embodiment, the battery shell breaking device further comprises a limiting member, which is connected with the workbench and used to abut against the pressing plate to limit the movement of the pressing plate in the direction towards the blade.

[0014] In an optional embodiment, the limiting member comprises a limiting frame and a limiting rod, the limiting frame is fixedly connected with the workbench, and the limiting rod is threadedly connected with the limiting frame and used to abut against one end of the pressing plate.

[0015] In an optional embodiment, the motor frame, the mounting frame and the limiting member are located on the same side of the pressing plate.

[0016] In an optional embodiment, the pressing plate is provided with a connecting portion and a limiting portion at two ends thereof along the extending direction of the pressing plate, the connecting portion is used to connect with the mounting frame, and the limiting portion is used to abut against the limiting member.

[0017] In an optional embodiment, the battery shell breaking device further comprises a dust cover, which is connected with the workbench and located at one end of the pressing plate.

[0018] The dust cover is provided with a giving slot matched with the adjacent connecting portion and limiting portion.

[0019] In an optional embodiment, the battery shell breaking device further comprises a dust collecting box, which is detachably connected with the motor frame or the pressing plate, the dust collecting box covers the bottom of the blade, and the side of the dust collecting box close to the pressing plate is provided with a gap for the blade to pass through.

[0020] In an optional embodiment, the workbench is provided with a dust outlet at the area opposite to the dust cover; and the workbench is provided with a through hole at the area opposite to the dust collecting box.

[0021] The battery shell breaking device provided by the embodiment of the utility model has the following beneficial effects:

[0022] The battery shell breaking device comprises a workbench, a motor frame, a motor, a blade, a mounting frame and a pressing plate; the motor frame is connected with the workbench, the motor is connected with the motor frame, and the blade is in transmission connection with the motor; the mounting frame is connected with the workbench, the pressing plate is movably connected with the mounting frame, and the pressing plate is provided with a through hole for the blade to pass through at the area opposite to the blade; wherein, the pressing plate is used to move in the direction close to the blade under the pressing of the battery, so that at least part of the blade passes through the through hole to cut the battery shell. The battery shell breaking device has simple structure and convenient operation, can improve the safety of operation, reduce the damage of the battery cell, improve the operation efficiency and reduce the operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. Other related drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0024] Figure 1 The structural schematic diagram of the battery shell breaking device provided for the embodiment is shown in the figure.

[0025] Figure 2 The structural schematic diagram of the battery shell breaking device provided for the embodiment and the structure under the first perspective of the electric core is shown in the figure.

[0026] Figure 3 The structural schematic diagram of the battery shell breaking device provided for the embodiment under the first perspective is shown in the figure.

[0027] Figure 4 The structural schematic diagram of Figure 3 The partial schematic diagram of the middle A is shown in the figure.

[0028] Figure 5 The structural schematic diagram of the pressing plate, the mounting frame and the limiting piece under the first perspective provided for the embodiment is shown in the figure.

[0029] Figure 6 The structural schematic diagram of the pressing plate, the mounting frame and the limiting piece under the second perspective provided for the embodiment is shown in the figure.

[0030] Figure 7 The structural schematic diagram of the blade, the pressing plate and the dust collecting box provided for the embodiment is shown in the figure.

[0031] Figure 8 The structural schematic diagram of the workbench, the blade, the pressing plate and the dust collecting box provided for the embodiment is shown in the figure.

[0032] Figure: 10-electric core; 100-battery shell breaking device; 110-workbench; 120-motor frame; 130-motor; 140-blade; 150-mounting frame; 160-pressing plate; 161-through hole; 151-fixed plate; 152-movable connecting piece; 153-first fixed piece; 154-elastic piece; 155-second fixed piece; 170-limiting piece; 171-limiting frame; 172-limiting rod; 162-connection part; 163-limiting part; 180-dust cover; 181-giving slot; 190-dust collecting box; 191-gap; 111-dust outlet; 112-passing port. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0035] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the utility model, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0037] In addition, if the terms "first", "second" and the like appear, they are only used for differentiation description, and cannot be understood as indicating or implying relative importance.

[0038] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0039] Please refer to Figures 1-4 The embodiment provides a battery shell breaking device 100, the battery shell breaking device 100 includes a workbench 110, a motor frame 120, a motor 130, a blade 140, a mounting frame 150 and a pressing plate 160.

[0040] The motor frame 120 is connected with the workbench 110, the motor 130 is connected with the motor frame 120, and the blade 140 is drivingly connected with the motor 130.

[0041] The mounting frame 150 is connected with the workbench 110, the pressing plate 160 is movably connected with the mounting frame 150, and the pressing plate 160 is provided with a through hole 161 for the blade 140 to pass through in the area opposite to the blade 140.

[0042] The pressing plate 160 is used to move towards the direction close to the blade 140 under the pressing action of the battery, so that at least part of the blade 140 cuts the shell of the battery through the through hole 161.

[0043] Please refer to Figures 1-4 The working principle of the battery shell breaking device 100 is as follows:

[0044] The beneficial effects of the battery shell breaking device 100 provided in the embodiment of the utility model include:

[0045] Firstly, the shell breaking of the square aluminum shell battery is taken as an example for description, and in other embodiments of the utility model, the battery shell breaking device 100 can also be applied to breaking the shells of other types of batteries.

[0046] Specifically, the battery shell breaking device 100 includes a workbench 110, a motor bracket 120, a motor 130, a blade 140, a mounting bracket 150 and a pressing plate 160; the motor bracket 120 is connected with the workbench 110, the motor 130 is connected with the motor bracket 120, and the blade 140 is in transmission connection with the motor 130. Therefore, the blade 140 can be driven to rotate by the motor 130 in this way. In the process of use, since the motor 130 is fixed to the workbench 110 through the motor bracket 120 in the embodiment, when the battery needs to be broken, the battery can be moved to contact the blade 140, and then the battery can be broken by moving along the extension direction of the shell relative to the blade 140, that is, the shell is cut;

[0047] In the process of cutting the battery, in order to improve the safety of operation and the stability of the blade 140 in the process of cutting the battery, the mounting bracket 150 and the pressing plate 160 are arranged in the embodiment. The mounting bracket 150 is connected with the workbench 110, the pressing plate 160 is movably connected with the mounting bracket 150, and the through hole 161 for the blade 140 to pass through is arranged in the region of the pressing plate 160 opposite to the blade 140. Therefore, when the battery needs to be cut, the side of the battery to be cut is tightly attached to the pressing plate 160, so that the pressing plate 160 is pressed by the battery. Since the pressing plate 160 is movably connected with the mounting bracket 150, the pressing plate 160 moves towards the direction close to the blade 140 under the pressing action of the battery, so that at least part of the blade 140 cuts the shell of the battery through the through hole 161. It should be noted that after the battery presses the pressing plate 160 and the blade 140 contacts the shell of the battery, the battery is slid along the direction of the side to be cut relative to the pressing plate 160, so that the blade 140 cuts the shell of the battery;

[0048] And such a way of setting, its can through the setting of the pressing plate 160, can play a protective role to the user in the process of cutting the battery shell, is favorable to improve the security of use, and the operation is simple and convenient;

[0049] In summary, the battery shell breaking device 100 has simple structure and convenient operation, which can improve the safety of operation, reduce the damage of the battery cell 10, improve the operation efficiency and reduce the operation cost.

[0050] When configuring the workbench 110, the workbench 110 includes a foot, a fixing bolt, a support and a table top. The support is made of aluminum profile, which is convenient to obtain and flexible to build, and has low cost. The table top is made of carbon steel plate with a thickness of about 10 mm, which has high rigidity to ensure high precision, realize high-precision cutting and breaking, prevent the aluminum shell from being cut to cause fire, and reduce the safety risk in the breaking process. The table top is fixed on the support.

[0051] When configuring the motor rack 120, the motor rack 120 can be made of carbon steel, which has high rigidity to reduce the shaking of the motor 130 during movement and ensure sufficient movement control precision. The motor 130 is a high-torque servo motor 130, which has higher movement control precision and larger torque than a stepper motor 130. The aluminum shell of the square aluminum shell battery needs a large torque during cutting, and the motor 130 is fixed on the motor rack 120.

[0052] The blade 140 is selected from a disc cutter or a small-toothed saw blade. These two kinds of blades can ensure high-precision control of the cutting depth, and the cut aluminum shell becomes small debris, which is more conducive to collection and prevents aluminum scraps from entering the battery cell 10 to cause high safety risk.

[0053] Further, please refer to Figures 1-6 In this embodiment, when configuring the pressing plate 160, the pressing plate 160 is a flat plate made of aluminum alloy, which has a through hole 161 for the blade 140 to pass through. The pressing plate 160 is movably connected to the mounting rack 150. The mounting rack 150 includes two fixed plates 151 and a plurality of movable connecting pieces 152. The two fixed plates 151 are fixedly connected to the workbench 110 at intervals, and the pressing plate 160 is connected to the two fixed plates 151 through the plurality of movable connecting pieces 152.

[0054] And each movable connecting piece 152 comprises a first fixing piece 153, an elastic piece 154 and a second fixing piece 155; the first fixing piece 153 is connected with the pressing plate 160, the second fixing piece 155 is connected with the fixed plate 151, and the first fixing piece 153 and the second fixing piece 155 are movably connected, the elastic piece 154 is arranged at the movable connection position of the first fixing piece 153 and the second fixing piece 155, and the elastic piece 154 is used to make the first fixing piece 153 have a tendency to move away from the side of the second fixing piece 155, so that the pressing plate 160 has a tendency to move away from the direction of the blade 140.

[0055] Therefore, through the above structure, the pressing plate 160 can be movably connected to the mounting frame 150, and when the blade 140 moves in the direction of the battery under the pressure of the battery, the blade 140 can pass through the through hole 161 to cut the battery, and the elastic force of the elastic piece 154 needs to be overcome. Under this arrangement, the pressing plate 160 can return to its original position under the action of the elastic force when the external force of the battery disappears, that is, it can move away from the direction of the blade 140, and the pressing plate 160 can act as a shield to avoid accidental contact between the operator or external structure and the blade 140, thereby improving the safety of operation.

[0056] Please refer to Figures 1-6 In this embodiment, four movable connecting pieces 152 are used, and the elastic piece 154 is a spring. Therefore, the pressing plate 160 can be pressed inward by the spring, that is, it can move in the direction of the blade 140, and at this time, the blade 140 can pass through the through hole 161 to cut the battery, thereby ensuring that the blade 140 contacts the aluminum shell through the through hole 161 during the breaking process, thereby cutting the aluminum shell to break the shell of the battery cell 10. If it is not pressed normally, that is, in the unused state, the blade 140 will not pass through the through hole 161, preventing accidental contact and scratching, which may cause safety risks. The through hole 161 on the pressing plate 160 has a certain width, and when encountering different sizes of battery cells 10, the position of the motor 130 and the blade 140 can be adjusted to ensure that the through hole 161 passes through the aluminum shell of the battery cell 10 to contact, thereby realizing the compatibility of breaking different battery cells 10.

[0057] It should be noted that in the configuration of the movable connecting piece 152, it is set around the pressing plate 160, and the movable connection between the first fixing piece 153 and the second fixing piece 155 is sliding along the axial direction, that is, linear movement. Based on this, the first fixing piece 153 and the second fixing piece 155 can also be set as telescopic sleeves. The purpose of such a setting is to make the movement of the pressing plate 160 relative to the blade 140 a translation after the pressing plate 160 moves towards the blade 140 under the pressure of the battery, so that the cutting depth of each position of the battery shell is consistent as the battery slides relative to the pressing plate 160 and the blade 140 after the battery shell contacts the blade 140.

[0058] That is, through the above structural setting, the maximum cutting depth of the blade 140 on the battery can be ensured after the movable stroke of the pressing plate 160 is determined, so that the battery is protected by such a setting to prevent the core inside the aluminum shell from being cut to cause a fire, and reduce the generation of safety risks during the shell breaking process.

[0059] In addition, when configuring the through hole 161 on the pressing plate 160, multiple through holes can be provided, which can adapt to the cutting needs of different heights. On this basis, the installation height of the motor 130 relative to the motor frame 120 can be adjusted to adapt to the cutting needs of different types of batteries.

[0060] Further, please refer to Figures 1-6 In this embodiment, the maximum translation of the pressing plate 160 during movement is limited, and the maximum cutting depth of the blade 140 is also adjusted. Therefore, the battery shell breaking device 100 further comprises a limiting piece 170 connected with the workbench 110 and used for abutting against the pressing plate 160 to limit the movement of the pressing plate 160 towards the blade 140. Therefore, through such a setting, the maximum activity distance of the pressing plate 160 can be adjusted by limiting the movement of the pressing plate 160, thereby adjusting the cutting depth of the blade 140. Moreover, in order to adjust the limiting stroke of the limiting piece 170, the limiting piece 170 comprises a limiting frame 171 and a limiting rod 172. The limiting frame 171 is fixedly connected with the workbench 110, and the limiting rod 172 is threadedly connected with the limiting frame 171 and has one end abutting against the pressing plate 160. Through such a setting, the length of the segment of the limiting rod 172 abutting against the pressing plate 160 can be adjusted by rotating the limiting rod 172 relative to the limiting frame 171. Moreover, the end of the limiting rod 172 abutting against the pressing plate 160 is provided with a buffer pad.

[0061] On the basis of the above structure, the motor frame 120, the mounting frame 150 and the limiting piece 170 are all located on the same side of the pressing plate 160. The purpose of this arrangement is that when cutting the battery, the battery needs to be tightly attached to the pressing plate 160 and then moved relative to the pressing plate 160. Therefore, in order to avoid interference between the motor frame 120, the mounting frame 150, the limiting piece 170 and the moving battery, the motor frame 120, the mounting frame 150 and the limiting piece 170 are all located on the same side of the pressing plate 160, and the battery is located on the other side of the pressing plate 160.

[0062] On the basis of the above structure, in order to facilitate the installation of the pressing plate 160 and the adjustment of the limiting piece 170, the two ends of the pressing plate 160 along its extension direction are respectively provided with a connecting part 162 and a limiting part 163. The connecting part 162 is used to connect with the mounting frame 150, and the limiting part 163 is used to abut with the limiting piece 170.

[0063] Moreover, on this basis, please refer to Figures 1-8 In order to collect and process the waste residue in the cutting process, the battery shell breaking device 100 further comprises a dust cover 180, which is connected with the workbench 110 and located at one end of the pressing plate 160. The dust cover 180 is provided with a gap slot 181 matched with the adjacent connecting part 162 and limiting part 163.

[0064] This arrangement can collect the waste residue generated when the blade 140 is cutting through the dust cover 180, reducing the splashing outside the workbench 110. Moreover, this arrangement is that the battery is cut towards the end where the dust cover 180 is arranged during the cutting process, so that the dust cover 180 can collect the splashing waste residue.

[0065] In addition, the battery shell breaking device 100 further comprises a dust collecting box 190, which is detachably connected with the motor frame 120 or the pressing plate 160. The dust collecting box 190 covers the bottom of the blade 140, and the side of the dust collecting box 190 close to the pressing plate 160 is provided with a gap 191 for the blade 140 to pass through. In this way, the waste residue below the blade 140 can also be collected.

[0066] And the above-mentioned dust cover 180 and dust collection box 190 can collect and process the waste slag on both sides of the pressing plate 160, thereby preventing the waste slag from splashing and improving the collection and processing efficiency of the waste slag. Specifically, the dust cover 180 can prevent aluminum chips from splashing everywhere during cutting. The dust cover 180 is installed on the workbench 110. The dust collection box 190 is installed below the blade 140 and is mainly used to collect aluminum chips during the cutting of the aluminum shell. The dust collection box 190 can prevent accidental contact with the cutting blade 140 and reduce the risk of injury. In this embodiment, the dust collection box 190 is hung on the pressing plate 160. In order to facilitate the collection and cleaning of the waste slag, the workbench 110 is provided with a dust outlet 111 in the area opposite the dust cover 180. The workbench 110 is provided with a through hole 112 in the area opposite the dust collection box 190, and the through hole 112 allows the dust collection box 190 to pass through, so as to facilitate the cleaning of the dust collection box 190.

[0067] In summary, please refer to Figures 1-8 For example, the square aluminum shell battery, the operation steps of the battery breaking device 100 are as follows:

[0068] The large face aluminum shell of the battery cell 10 is completely attached to the pressing plate 160.

[0069] Press the start switch, the motor 130 is powered on, the blade 140 starts to rotate, press the battery cell 10 to move towards the blade 140, the pressing plate 160 moves synchronously, so that the blade 140 starts to contact the large face aluminum shell and cut, press and push the battery cell 10 forward, realize the complete cutting of the aluminum shell from one side to the other side, and ensure that the battery cell 10 is tightly attached to the pressing plate 160 during the advancing process, and the pressing plate 160 is pressed to the bottom, so as to ensure that the cutting depth is unchanged.

[0070] Rotate the battery cell 10 by 180°, attach the other large face to the pressing plate 160, and realize the complete cutting of the aluminum shell on this side according to the above method.

[0071] Rotate the battery cell 10 by 90°, attach one side to the pressing plate 160, and realize the complete cutting of the aluminum shell on this side according to the above method.

[0072] Rotate the battery cell 10 by 180°, attach the other side to the pressing plate 160, and realize the complete cutting of the aluminum shell on this side according to the above method.

[0073] After cutting the four sides of the aluminum shell, press the aluminum shell, lift the battery cell 10 top cover upwards, and pull out the inner roll core, that is, realize the breaking of the battery cell 10.

[0074] The battery breaking device 100 has the following advantages:

[0075] The whole device is simple and convenient to design, and has high shell breaking efficiency, and the shell of the battery cell 10 can be broken in 1-2 minutes;

[0076] Because the cutting position and cutting depth of the aluminum shell are controlled with high precision, the inner winding core cannot be cut in the cutting process, and the safety factor is high;

[0077] The device ensures that people cannot touch the cutting blade 140 to cause scratches during normal use or use, and the safety factor is high;

[0078] Although the device is simple, the aluminum scraps generated by cutting are specially collected to prevent the aluminum scraps from splashing everywhere to pollute the environment, and to reduce the risk of short circuit caused by the aluminum scraps entering the battery cell 10.

[0079] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A battery shell breaking device, characterized in that: the battery shell breaking device comprises a workbench, a motor frame, a motor, a blade, a mounting frame and a pressing plate; the motor frame is connected with the workbench, the motor is connected with the motor frame, and the blade is in transmission connection with the motor; the mounting frame is connected with the workbench, the pressing plate is movably connected with the mounting frame, and a through hole for the blade to pass through is formed in the area of the pressing plate opposite to the blade; wherein, the pressing plate is used to move towards the blade under the pressing of the battery, so that at least part of the blade cuts the shell of the battery through the through hole. 2.A battery shell breaking device according to claim 1, characterized in that: the mounting frame comprises two fixed plates and a plurality of movable connecting pieces; the two fixed plates are fixedly connected with the workbench at intervals, and the pressing plate is connected with the two fixed plates through the plurality of movable connecting pieces. 3.A battery shell breaking device according to claim 2, characterized in that: each movable connecting piece comprises a first fixing piece, an elastic piece and a second fixing piece; the first fixing piece is connected with the pressing plate, the second fixing piece is connected with the fixed plate, and the first fixing piece and the second fixing piece are movably connected, the elastic piece is arranged at the movable connection between the first fixing piece and the second fixing piece, and the elastic piece is used to make the first fixing piece have a tendency to move away from the second fixing piece, so that the pressing plate has a tendency to move away from the blade. 4.A battery shell breaking device according to claim 2, characterized in that: the battery shell breaking device further comprises a limiting piece, the limiting piece is connected with the workbench, and is used to abut against the pressing plate to limit the movement of the pressing plate towards the blade. 5.A battery shell breaking device according to claim 4, characterized in that: the limiting piece comprises a limiting frame and a limiting rod, the limiting frame is fixedly connected with the workbench, the limiting rod is threadedly connected with the limiting frame, and one end of the limiting rod is used to abut against the pressing plate. 6.A battery shell breaking device according to claim 4, characterized in that: the motor frame, the mounting frame and the limiting piece are located on the same side of the pressing plate. 7.A battery shell breaking device according to claim 6, characterized in that: the pressing plate is provided with a connecting part and a limiting part at both ends thereof along the extending direction, the connecting part is used to connect with the mounting frame, and the limiting part is used to abut against the limiting piece. 8.A battery shell breaking device according to claim 7, characterized in that: the battery shell breaking device further comprises a dust cover, the dust cover is connected with the workbench and located at one end of the pressing plate; wherein, the dust cover is provided with a giving-up slot matched with the adjacent connecting part and limiting part. 9.A battery shell breaking device according to claim 8, characterized in that: The battery shell breaking device further comprises a dust collecting box, which is detachably connected with the motor frame or the pressing plate, and the dust collecting box is arranged at the bottom of the blade, and an opening for the blade to pass through is arranged on one side of the dust collecting box close to the pressing plate.

10. The battery shell breaking device according to claim 9, characterized in that: The workbench is provided with a dust outlet on the area opposite to the dust cover; and the workbench is provided with a through hole on the area opposite to the dust collecting box.

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