Automatic shell cutting and core taking device for square single-body lithium battery

Abstract

The application discloses a kind of automatic shell cutting and core taking devices of square single lithium battery, and it relates to lithium battery recycling technical field, including shell cutting mechanism, and first worm gear protective cover installed in one side of shell cutting mechanism, the outside of shell cutting mechanism is provided with flue gas purification mechanism, and the top of flue gas purification mechanism is provided with purification box body, the shell cutting mechanism includes first rotating disc and second rotating disc, the side center position of second rotating disc is rotatably connected with first connecting shaft, the inside one side of first worm gear protective cover is symmetrically installed with first rotating support, by reserving waste material edge, limit hot damage in non-functional area, to protect the core of square single lithium battery, avoid temperature too high to affect the cutting effect of square single lithium battery, by reducing the movement range of square single lithium battery when cutting square single lithium battery shell, to improve the cutting accuracy of square single lithium battery shell.

Description

Technical Field

[0001] This invention relates to the field of lithium battery recycling technology, specifically to an automatic casing-cutting and core-extraction device for square single-cell lithium batteries. Background Technology

[0002] Lithium-ion batteries are classified by shape into square lithium batteries, cylindrical lithium batteries, and button lithium batteries. Battery modules made from square lithium batteries are generally heavy and large in size. Furthermore, there are no reliable structural components on the module that can serve as force points for moving the battery module. Currently, the conventional disassembly method usually involves first using clamps to stabilize the battery, and then using sawing, laser cutting, or water jet cutting to make a circular cut along the pre-set cutting lines on the square aluminum shell, thereby separating the aluminum shell from the cover plate assembly. Next, a vertical side cut is made, and then a shell expander is used to separate the side of the aluminum shell from the battery cell. Finally, the battery cell is removed using clamping components.

[0003] Publication No. CN120749271A discloses a refined dismantling device and process for square single-cell lithium battery cells. A vertical cutting mechanism drives the square single-cell lithium battery downwards, during which the end cap shell is vertically cut. The vertically cut square single-cell lithium battery enters a horizontal cutting mechanism, which transports the square single-cell lithium battery to the right. During this transport, the end cap shell is horizontally cut. After the end cap is cut, the battery continues to be transported to the right, during which the end cap is detached and laterally cut. No other operations are required, making the operation simple and the cutting operation highly continuous, thus improving the dismantling efficiency of square single-cell lithium batteries. However, this patent still has the following problems in practical use:

[0004] Although the device and process for refining the square single-cell lithium battery can transport the square single-cell lithium battery downwards through a vertical cutting mechanism and vertically cut the end cap shell during the transport process, the entire cutting process is relatively long and cannot guarantee the stable position of the square single-cell lithium battery. This leads to positional deviations during cutting, affecting the cutting accuracy and hindering the rapid extraction of lithium battery cells. In addition, existing technologies use laser cutting machines to cut the lithium battery casing, but the high temperature generated during laser cutting can cause problems such as coating carbonization and metal foil deformation. For example, positive electrode materials (such as ternary materials) are highly thermally sensitive, and high temperatures can easily cause the active material to fall off. Although the negative electrode copper foil has high thermal conductivity, high temperatures may still cause structural instability, thus affecting the cutting effect of the square single-cell lithium battery casing.

[0005] Therefore, an automatic casing cutting and core extraction device for square single-cell lithium batteries is proposed to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic casing cutting and core extraction device for square single-cell lithium batteries, which solves the problems mentioned in the background art, such as the long cutting process, inability to guarantee the stable position of the square single-cell lithium battery, resulting in positional deviation during cutting, affecting the cutting accuracy, and hindering the rapid core extraction of lithium batteries. In addition, the existing technology uses a laser cutting machine to cut the lithium battery casing, but the high temperature generated during laser cutting can cause problems such as coating carbonization and metal foil deformation. For example, the positive electrode material (such as ternary material) is highly thermally sensitive, and high temperature can easily cause the active material to fall off. Although the negative electrode copper foil has high thermal conductivity, high temperature may still cause structural instability, thus affecting the cutting effect of the square single-cell lithium battery casing.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic casing cutting and core extraction device for square single-cell lithium batteries, including a casing cutting mechanism and a first worm gear protective cover installed on one side of the casing cutting mechanism;

[0008] A flue gas purification mechanism is provided on the outside of the shell cutting mechanism, and a purification box is provided on the top of the flue gas purification mechanism.

[0009] Also includes:

[0010] The shell-cutting mechanism includes a first rotating disk and a second rotating disk. A first connecting shaft is rotatably connected to the center of one side of the second rotating disk, and a first rotating bracket is symmetrically installed on one side of the inside of the first worm gear protective cover.

[0011] The first rotating bracket has a first rotating motor fixedly installed on its top, and the output end of the first rotating motor is fixedly connected to a first rotating worm.

[0012] The first rotating worm gear is meshed with a first rotating worm wheel on one side, and a first rotating sleeve is fixedly connected to one side of the first rotating worm wheel. The first rotating sleeve is fixedly connected to the first rotating disk.

[0013] Preferably, fixed connecting shafts are symmetrically installed on the sides of the first and second rotating disks that are close to each other, and fixed brackets are fixedly installed on one side of each of the four fixed connecting shafts. Reciprocating brackets and opening and closing brackets are fixedly installed between the two sets of fixed brackets respectively, and a reciprocating motor is fixedly installed at the end of one fixed bracket near the reciprocating bracket.

[0014] Preferably, the output end of the reciprocating motor is fixedly connected to a reciprocating lead screw, a lead screw sleeve is sleeved on the outside of the reciprocating lead screw, a first electric telescopic rod is fixedly installed on the outside of the lead screw sleeve, a laser cutting machine is fixedly installed at the end of the first electric telescopic rod, and an opening and closing motor is fixedly installed at the end of the fixed bracket near the opening and closing bracket on the other side.

[0015] Preferably, the output end of the opening and closing motor is fixedly connected to an opening and closing bidirectional threaded rod, and the outer side of the opening and closing bidirectional threaded rod is symmetrically threaded with an opening and closing threaded sleeve. A second electric telescopic rod is fixedly installed on the outer side of each of the two opening and closing threaded sleeves. A second worm gear protective cover is fixedly installed at the end of the second electric telescopic rod, and a second rotating bracket is symmetrically installed on the inner side of the second electric telescopic rod near the second worm gear protective cover.

[0016] Preferably, a second rotating motor is fixedly installed on the outer side of the second rotating bracket, a second rotating worm is fixedly connected to the output end of the second rotating motor, a second rotating worm wheel is meshed with one side of the second rotating worm, an installation sleeve is fixedly installed on the outer side of the second rotating worm wheel, a cutting motor is fixedly installed on one side of the inner side of the installation sleeve, and a cutting blade is fixedly connected to the output end of the cutting motor.

[0017] Preferably, an ejector cylinder is fixedly installed on one side of the interior of the second rotating disk, a closed baffle is rotatably connected to the side of the first rotating disk near the ejector cylinder, a circulating motor is fixedly installed on the side of the first rotating worm gear away from the first rotating sleeve, a circulating connecting shaft is fixedly connected to the output end of the circulating motor, the circulating connecting shaft is rotatably connected to the first rotating sleeve, and a circulating rotating rod is fixedly connected to the end of the circulating connecting shaft.

[0018] Preferably, both ends of the circulating rotating rod are fixedly installed with circulating rotating frames, and a plurality of second connecting shafts are rotatably connected to the side of the two circulating rotating frames that are close to each other. A limit frame is rotatably connected between the two second connecting shafts. The limit frame is symmetrically threaded with clamping bolts inside. A clamping knob is fixedly installed on the outside of the clamping bolt. An L-shaped clamping plate is rotatably connected to the end of the clamping bolt away from the clamping knob. A square single-cell lithium battery casing is fitted between the two L-shaped clamping plates.

[0019] Preferably, the flue gas purification mechanism includes a support frame, with a support base plate fixedly installed at the bottom of each of the two support frames. Connecting blocks are symmetrically installed on one side of the middle of the two support frames. A cutting box is fixedly installed between the connecting blocks. Connecting hinges are symmetrically rotatably connected to both sides and the bottom of the cutting box. A sealing door is rotatably connected to the outer side of the two connecting hinges. A first handle is fixedly installed on the outer side of the sealing door. Rotating grooves are opened on both sides of the interior of the cutting box. The first rotating disk and the second rotating disk are rotatably connected to the cutting box through the rotating grooves. The purification box is fixedly installed on the top of the purification box.

[0020] Preferably, the top inner side of the purification chamber is threaded with a connecting threaded pipe, the top outer side of the connecting threaded pipe is fixedly installed with an unlocking block, the inner side of the connecting threaded pipe near the unlocking block is fixedly installed with a dust suction hood, the top of the dust suction hood is fixedly installed with a dustproof net, the inside of the dust suction hood is fixedly installed with a dust suction fan, a plurality of limiting rings are fixedly installed on one side of the inner side of the purification chamber, a flue gas adsorption carbon plate is engaged with the inside of the limiting rings, a limiting sliding plate is fixedly installed on one side of the flue gas adsorption carbon plate, and a second handle is fixedly installed on the outer side of the limiting sliding plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: This automatic casing cutting and core extraction device for square single-cell lithium batteries limits thermal damage to the non-functional area by reserving a waste edge (0.5 to 2 mm), thereby protecting the cell of the square single-cell lithium battery and preventing excessive temperature from affecting the cutting effect. The cutting blade performs a secondary cut along the reserved waste edge, thereby controlling the cutting accuracy and preventing damage to the cell of the square single-cell lithium battery, which facilitates the protection of the cell. Through a cyclic rotation, when the laser cutting machine and the cutting blade move to different positions of the cyclic rotating frame, the four sides of the square single-cell lithium battery casing can be cut. By reducing the movement range of the square single-cell lithium battery casing during cutting, the cutting accuracy of the square single-cell lithium battery casing is improved. The dust suction fan at the top of the cutting box absorbs the fumes generated during cutting, and multiple fumes adsorption carbon plates inside the purification box purify the fumes, improving the purification effect. The specific details are as follows:

[0022] 1. By setting up a shell-cutting mechanism, not only can the first rotating motor drive the first rotating worm gear to rotate, but the meshing connection between the first rotating worm gear and the first rotating worm wheel can also cause the first rotating worm wheel to drive the first rotating sleeve and the first rotating disk to rotate. Since the first rotating disk and the second rotating disk are connected by a fixed connecting shaft, a fixed bracket, a reciprocating bracket, and an opening and closing bracket, the first rotating disk can drive the second rotating disk to rotate. At the same time, the reciprocating motor is started to drive the reciprocating screw to rotate, causing the screw sleeve to drive the first electric telescopic rod and the laser cutting machine to move back and forth on the outside of the reciprocating screw. The first electric telescopic rod can be used to adjust the distance between the laser cutting machine and the square single-cell lithium battery casing. By leaving a waste edge (0.5 to 2 mm), the heat is transferred to the casing. Damage is confined to non-functional areas, thus protecting the square lithium-ion battery cells and preventing overheating that could affect the cutting effect. Simultaneously, the opening and closing motor rotates the bidirectional threaded rod, causing the threaded sleeve to move relative to the second electric telescopic rod and the second worm gear protective cover. The second rotating motor then rotates the second rotating worm. Utilizing the meshing connection between the second rotating worm and the second rotating worm wheel, the second rotating worm wheel drives the mounting sleeve, cutting motor, and cutting blade to move relative to each other. This allows the cutting blade to perform a secondary cut along the pre-reserved waste edge, controlling cutting precision without damaging the square lithium-ion battery cells, thus facilitating cell protection. This process is achieved by starting the cycle... The ring motor drives the circulating connecting shaft, circulating rotating rod, and circulating rotating frame to rotate. The second connecting shaft enables the rotation of the limiting frame. Rotating the clamping knob causes the clamping bolts to rotate within the internal threads of the limiting frame, thus achieving relative movement of the two L-shaped clamps. These L-shaped clamps clamp and fix the middle portion of the square single-cell lithium battery casing, while exposing both ends for easy circular cutting using a laser cutting machine. Because the square single-cell lithium battery casing is placed in a lower position inside the limiting frame, the center of gravity of the entire limiting frame is downward. Therefore, the square single-cell lithium battery casing remains vertical during the rotation of the circulating rotating frame. The first rotating disk and... The second rotating disk rotates in the opposite direction to the circulating rotating frame. When the laser cutting machine and the cutting blade move to different positions on the circulating rotating frame, the PLC controller controls the start and stop of the laser cutting machine, which can cut the four sides of the square single lithium battery casing. After the two ends of the square single lithium battery casing are cut, the end caps fall to the bottom, exposing the two ends of the square single lithium battery casing. The ejection cylinder pushes the cell of the square single lithium battery out from the closed baffle, which facilitates the rapid core extraction of the square single lithium battery. By reducing the range of movement of the square single lithium battery when cutting the square single lithium battery casing, the cutting accuracy of the square single lithium battery casing is improved, which facilitates the rapid core extraction of the square single lithium battery.

[0023] 2. By setting up a flue gas purification mechanism, the sealed box door can be opened using the first handle and connecting hinge, facilitating the placement and removal of square single-cell lithium battery casings. The bottom sealed box door allows the removal of the cut end caps. The dust extraction fan at the top of the cutting box absorbs the flue gas generated during cutting, and multiple flue gas adsorption carbon plates inside the purification box purify the flue gas, improving the purification effect. The second handle allows the limiting sliding plate and flue gas adsorption carbon plates to be removed from the inside of the purification box, enabling the replacement of the flue gas adsorption carbon plates without stopping the flue gas purification mechanism, further improving the efficiency of flue gas purification. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the shell-cutting mechanism in this invention;

[0026] Figure 3 This is a three-dimensional cross-sectional structural diagram of the first worm gear protective cover in this invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the first and second rotating disks in this invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the reciprocating support cross-section in this invention;

[0029] Figure 6 This is a three-dimensional cross-sectional structural diagram of the opening and closing bracket in this invention;

[0030] Figure 7 This is a three-dimensional cross-sectional structural diagram of the second worm gear protective cover in this invention;

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the cyclic rotating frame in this invention;

[0032] Figure 9 This is a schematic diagram of the three-dimensional structure of the limiting frame in this invention;

[0033] Figure 10 This is a three-dimensional structural diagram of the flue gas purification mechanism in this invention;

[0034] Figure 11 This is a three-dimensional structural diagram of the cross-section of the purification box and the dust collection hood in this invention.

[0035] In the diagram: 1. Shell cutting mechanism; 101. First rotating disk; 102. Second rotating disk; 103. First connecting shaft; 104. First worm gear protective cover; 105. First rotating bracket; 106. First rotating motor; 107. First rotating worm; 108. First rotating worm wheel; 109. First rotating sleeve; 110. Fixed connecting shaft; 111. Fixed bracket; 112. Reciprocating bracket; 113. Opening and closing bracket; 114. Reciprocating... 115. Motor; 116. Reciprocating lead screw; 117. Lead screw sleeve; 118. First electric telescopic rod; 119. Laser cutting machine; 120. Opening and closing motor; 121. Opening and closing bidirectional threaded rod; 122. Opening and closing threaded sleeve; 123. Second electric telescopic rod; 124. Second worm gear guard; 125. Second rotating bracket; 126. Second rotating motor; 127. Second rotating worm; 128. Mounting sleeve; 1 29. Cutting motor; 130. Cutting blade; 131. Ejector cylinder; 132. Sealing baffle; 133. Circulating motor; 134. Circulating connecting shaft; 135. Circulating rotating rod; 136. Circulating rotating frame; 137. Second connecting shaft; 138. Limiting frame; 139. Clamping bolt; 140. Clamping knob; 141. L-shaped clamping plate; 142. Square single-cell lithium battery casing; 2. Flue gas purification mechanism; 201. Support frame; 202. Support base plate; 203. Connecting block; 204. Cutting box body; 205. Connecting hinge; 206. Sealing box door; 207. First handle; 208. Rotating groove; 209. Purification box body; 210. Connecting threaded pipe; 211. Unlocking block; 212. Dust hood; 213. Dustproof net; 214. Dust suction fan; 215. Limiting ring; 216. Smoke adsorption carbon plate; 217. Limiting sliding plate; 218. Second handle. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1-5 , Figures 10-11This invention provides a technical solution: an automatic casing cutting and core extraction device for square single-cell lithium batteries, including a casing cutting mechanism 1 and a first worm gear protective cover 104 installed on one side of the casing cutting mechanism 1. A flue gas purification mechanism 2 is provided on the outside of the casing cutting mechanism 1, and a purification chamber 209 is provided on the top of the flue gas purification mechanism 2. The casing cutting mechanism 1 includes a first rotating disk 101 and a second rotating disk 102. A first connecting shaft 103 is rotatably connected to the center position of one side of the second rotating disk 102. A first rotating bracket 105 is symmetrically installed on one side of the inside of the first worm gear protective cover 104. A first rotating motor 106 is fixedly installed on the top of the first rotating bracket 105. The output end is fixedly connected to a first rotating worm gear 107, wherein a first rotating worm wheel 108 is meshed with one side of the first rotating worm gear 107, and a first rotating sleeve 109 is fixedly connected to one side of the first rotating worm wheel 108. The first rotating sleeve 109 is fixedly connected to a first rotating disk 101. Fixed connecting shafts 110 are symmetrically installed on the sides of the first rotating disk 101 and the second rotating disk 102 that are close to each other. Fixed brackets 111 are fixedly installed on one side of each of the four fixed connecting shafts 110. Reciprocating brackets 112 and opening / closing brackets 113 are fixedly installed between the two sets of fixed brackets 111 respectively. A reciprocating bracket 112 is fixedly installed at the end of one fixed bracket 111 near the reciprocating bracket 112. A reciprocating motor 114 has a reciprocating lead screw 115 fixedly connected to its output end. A lead screw sleeve 116 is fitted around the outside of the lead screw 115, and a first electric telescopic rod 117 is fixedly installed on the outside of the lead screw sleeve 116. A laser cutting machine 118 is fixedly installed at the end of the first electric telescopic rod 117. A first rotating motor 106 drives a first rotating worm gear 107 to rotate. Utilizing the meshing connection between the first rotating worm gear 107 and the first rotating worm wheel 108, the first rotating worm wheel 108 drives the first rotating sleeve 109 and the first rotating disk 101 to rotate. Since the first rotating disk 101 and the second rotating disk 102 are connected by a fixed connecting shaft 110 and a fixed... The bracket 111, reciprocating bracket 112, and opening / closing bracket 113 are connected, so the first rotating disk 101 can drive the second rotating disk 102 to rotate. At the same time, the reciprocating motor 114 is started to drive the reciprocating screw 115 to rotate, so that the screw sleeve 116 drives the first electric telescopic rod 117 and the laser cutter 118 to move back and forth on the outside of the reciprocating screw 115. The first electric telescopic rod 117 can be used to adjust the distance between the laser cutter 118 and the square single lithium battery casing 142. By leaving a waste edge of 0.5 to 2 millimeters, heat damage is limited to the non-functional area, thereby protecting the cell of the square single lithium battery and avoiding excessive temperature from affecting the cutting effect of the square single lithium battery.

[0038] Please see Figures 4-7On the other side, a fixed bracket 111 near the end of the opening and closing bracket 113 is fixedly installed with an opening and closing motor 119. The output end of the opening and closing motor 119 is fixedly connected to an opening and closing bidirectional threaded rod 120. The outer side of the opening and closing bidirectional threaded rod 120 is symmetrically threaded with opening and closing threaded sleeves 121. A second electric telescopic rod 122 is fixedly installed on the outer side of both opening and closing threaded sleeves 121. A second worm gear guard 123 is fixedly installed at the end of the second electric telescopic rod 122. A second rotating bracket 124 is symmetrically installed on the inner side of the second electric telescopic rod 122 near the second worm gear guard 123. A second rotating motor 125 is fixedly installed on the outer side of the second rotating bracket 124. A second rotating worm 126 is fixedly connected to the output end of the second rotating motor 125. A second rotating worm gear 127 is meshed with one side of the second rotating worm gear 126. The outer side of the second rotating worm gear 127... An installation sleeve 128 is fixedly installed, and a cutting motor 129 is fixedly installed on one side inside the installation sleeve 128. A cutting blade 130 is fixedly connected to the output end of the cutting motor 129. When the opening and closing motor 119 is started, it drives the opening and closing bidirectional threaded rod 120 to rotate, causing the opening and closing threaded sleeve 121 to drive the second electric telescopic rod 122 and the second worm gear protective cover 123 to move relative to each other. At the same time, the second rotation motor 125 is started to drive the second rotation worm 126 to rotate. Utilizing the meshing connection between the second rotation worm 126 and the second rotation worm gear 127, the second rotation worm gear 127 drives the installation sleeve 128, the cutting motor 129 and the cutting blade 130 to move relative to each other. This allows the cutting blade 130 to perform a secondary cut along the reserved waste edge, thereby controlling the cutting accuracy and preventing damage to the square single-cell lithium battery cell, which is convenient for protecting the square single-cell lithium battery cell.

[0039] Please see Figures 2-9An ejector cylinder 131 is fixedly installed on one side of the interior of the second rotating disk 102. A sealing baffle 132 is rotatably connected to the side of the first rotating disk 101 near the ejector cylinder 131. A circulating motor 133 is fixedly installed on the side of the first rotating worm gear 108 away from the first rotating sleeve 109. A circulating connecting shaft 134 is fixedly connected to the output end of the circulating motor 133. The circulating connecting shaft 134 is rotatably connected to the first rotating sleeve 109. A circulating rotating rod 135 is fixedly connected to the end of the circulating connecting shaft 134. Circulating rotating frames 136 are fixedly installed at both ends of the circulating rotating rod 135. Several second connecting shafts 137 are rotatably connected to the sides of the two circulating rotating frames 136 that are close to each other. A limiting frame 138 is rotatably connected between two second connecting shafts 137. Clamping bolts 139 are symmetrically threaded inside the limiting frame 138. A clamping knob 140 is fixedly installed on the outside of the clamping bolts 139. An L-shaped clamping plate 141 is rotatably connected to the end of the clamping bolt 139 away from the clamping knob 140. A square single-cell lithium battery casing 142 is fitted between the two L-shaped clamping plates 141. The circulation motor 133 drives the circulation connecting shaft 134, circulation rotating rod 135, and circulation rotating frame 136 to rotate. The second connecting shafts 137 enable the rotation of the limiting frame 138. Rotating the clamping knob 140 causes the clamping bolts 139 to move inside the limiting frame 138. The screw threads rotate, allowing the two L-shaped clamps 141 to move relative to each other. The L-shaped clamps 141 clamp and fix the middle portion of the square single-cell lithium battery casing 142, while exposing both ends of the casing for easy cutting with a laser cutting machine 118. Because the square single-cell lithium battery casing 142 is positioned lower inside the limiting frame 138, the center of gravity of the entire limiting frame 138 is downward. Therefore, the square single-cell lithium battery casing 142 remains vertical during the rotation of the cyclic rotating frame 136. Furthermore, the rotation directions of the first rotating disk 101 and the second rotating disk 102 relative to the cyclic rotating frame 136 are... Conversely, when the laser cutting machine 118 and the cutting blade 130 move to different positions of the rotating frame 136, they can cut the four sides of the square single-cell lithium battery casing 142. After the two ends of the square single-cell lithium battery casing 142 are cut, the end caps fall to the bottom, exposing the two ends of the square single-cell lithium battery casing 142. The ejector cylinder 131 is used to eject the cell of the square single-cell lithium battery from the closed baffle 132, which facilitates the rapid extraction of the core of the square single-cell lithium battery. By reducing the range of movement of the square single-cell lithium battery when cutting the square single-cell lithium battery casing 142, the cutting accuracy of the square single-cell lithium battery casing 142 is improved, which facilitates the rapid extraction of the core of the square single-cell lithium battery.

[0040] Please see Figure 1 , Figures 10-11The flue gas purification mechanism 2 includes a support frame 201. A support base plate 202 is fixedly installed at the bottom of each of the two support frames 201. Connecting blocks 203 are symmetrically installed on one side of the middle of each of the two support frames 201. A cutting box 204 is fixedly installed between the connecting blocks 203. Connecting hinges 205 are symmetrically rotatably connected to both sides and the bottom of the cutting box 204. A sealing door 206 is rotatably connected to the outer side of each of the two connecting hinges 205. A first handle 207 is fixedly installed on the outer side of the sealing door 206. The inner sides of the cutting box 204... Both are provided with rotating grooves 208. The first rotating disk 101 and the second rotating disk 102 are rotatably connected to the cutting box 204 through the rotating grooves 208. The purification box 209 is fixedly installed on the top of the purification box 209. A connecting threaded pipe 210 is threadedly connected to the inner side of the top of the purification box 209. An unlocking block 211 is fixedly installed on the outer side of the top of the connecting threaded pipe 210. A dust suction hood 212 is fixedly installed on the inner side of the connecting threaded pipe 210 near the unlocking block 211. A dustproof net 213 is fixedly installed on the top of the dust suction hood 212. A vacuum fan 214 is fixedly installed inside the cover 212. Several limiting rings 215 are fixedly installed on one side of the interior of the purification chamber 209. A flue gas adsorption carbon plate 216 is engaged inside the limiting rings 215. A limiting sliding plate 217 is fixedly installed on one side of the flue gas adsorption carbon plate 216. A second handle 218 is fixedly installed on the outside of the limiting sliding plate 217. The sealed door 206 is opened using the first handle 207 and the connecting hinge 205, which facilitates the placement and removal of the square single lithium battery casing 142. The bottom is sealed. The door 206 allows the cut end cap to be removed. The dust extraction fan 214 on the top of the cutting box 204 absorbs the fumes generated during cutting. Multiple fumes-absorbing carbon plates 216 inside the purification box 209 purify the fumes, improving the purification effect. The second handle 218 allows the limiting sliding plate 217 and the fumes-absorbing carbon plates 216 to be removed from the inside of the purification box 209, enabling the fumes purification mechanism 2 to replace the fumes-absorbing carbon plates 216 without stopping the machine, further improving the efficiency of fumes purification.

[0041] Working principle: Before using this type of automatic casing cutting and core extraction device for square single-cell lithium batteries, it is necessary to check the overall condition of the device to ensure that it can work normally. Figure 1 - Figure 11As shown, firstly, the first rotating motor 106 drives the first rotating worm gear 107 to rotate. Utilizing the meshing connection between the first rotating worm gear 107 and the first rotating worm wheel 108, the first rotating worm wheel 108 drives the first rotating sleeve 109 and the first rotating disk 101 to rotate. Since the first rotating disk 101 and the second rotating disk 102 are connected by a fixed connecting shaft 110, a fixed bracket 111, a reciprocating bracket 112, and an opening / closing bracket 113, the first rotating disk 101 can drive the second rotating disk 102 to rotate. Simultaneously, the reciprocating motor 114 is started, driving the reciprocating screw 115 to rotate. This causes the screw sleeve 116 to drive the first electric telescopic rod 117 and the laser cutting machine 118 to reciprocate outside the reciprocating screw 115. The first electric telescopic rod 117 can adjust the distance between the laser cutting machine 118 and the square single-cell lithium battery casing 142. Leaving a waste edge of 0.5 to 2 millimeters limits heat damage to the non-functional area, thus protecting the square lithium-ion battery cell and preventing excessive temperature from affecting the cutting effect. Simultaneously, the opening and closing motor 119 is activated to drive the opening and closing bidirectional threaded rod 120 to rotate, causing the opening and closing threaded sleeve 121 to move relative to the second electric telescopic rod 122 and the second worm gear protective cover 123. The second rotation motor 125 is activated to drive the second rotation worm 126 to rotate. Utilizing the meshing connection between the second rotation worm 126 and the second rotation worm gear 127, the second rotation worm gear 127 drives the mounting sleeve 128, the cutting motor 129, and the cutting blade 130 to move relative to each other. This allows the cutting blade 130 to perform a secondary cut along the reserved waste edge, thereby controlling the cutting accuracy and preventing damage to the square lithium-ion battery cell, thus facilitating the protection of the square lithium-ion battery cell.

[0042] Secondly, by starting the circulating motor 133, the circulating connecting shaft 134, the circulating rotating rod 135, and the circulating rotating frame 136 are driven to rotate. The second connecting shaft 137 enables the rotation of the limiting frame 138. Rotating the clamping knob 140 causes the clamping bolt 139 to rotate within the internal threads of the limiting frame 138, thereby achieving relative movement of the two L-shaped clamping plates 141. The L-shaped clamping plates 141 can clamp and fix the middle portion of the square single-cell lithium battery casing 142, while exposing both ends of the square single-cell lithium battery casing 142, facilitating cutting of the ends using the laser cutting machine 118. Since the square single-cell lithium battery casing 142 is placed in a lower position inside the limiting frame 138, the center of gravity of the entire limiting frame 138 is downward. Therefore, when the circulating rotating frame 136 rotates, the square single-cell lithium battery casing 142... The lithium battery casing 142 is always in a vertical position, and the first rotating disk 101 and the second rotating disk 102 rotate in opposite directions to the rotating frame 136. When the laser cutting machine 118 and the cutting blade 130 move to different positions of the rotating frame 136, they can cut the four sides of the square single lithium battery casing 142. After the two ends of the square single lithium battery casing 142 are cut, the end caps fall to the bottom, and the two ends of the square single lithium battery casing 142 are exposed. The ejector cylinder 131 is used to eject the cell of the square single lithium battery from the closed baffle 132, which facilitates the rapid core extraction of the square single lithium battery. By reducing the range of movement of the square single lithium battery when cutting the square single lithium battery casing 142, the cutting accuracy of the square single lithium battery casing 142 is improved, which facilitates the rapid core extraction of the square single lithium battery.

[0043] Finally, the sealed door 206 is opened using the first handle 207 and the connecting hinge 205, facilitating the placement and removal of the square single-cell lithium battery casing 142. The bottom sealed door 206 allows the cut end caps to be removed. The dust extraction fan 214 on the top of the cutting box 204 absorbs the fumes generated during cutting. Multiple fumes adsorbing carbon plates 216 inside the purification box 209 purify the fumes, improving the purification effect. The limiting sliding plate 217 and the fumes adsorbing carbon plates 216 can be removed from the purification box 209 using the second handle 218, allowing the fumes purification mechanism 2 to replace the fumes adsorbing carbon plates 216 without stopping, further improving the efficiency of fumes purification.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic casing cutting and core extraction device for a square single-cell lithium battery, comprising a casing cutting mechanism (1) and a first worm gear protective cover (104) installed on one side of the casing cutting mechanism (1). The outer side of the cutting mechanism (1) is provided with a flue gas purification mechanism (2), and the top of the flue gas purification mechanism (2) is provided with a purification box (209). Its features are, Also includes: The shell cutting mechanism (1) includes a first rotating disk (101) and a second rotating disk (102). A first connecting shaft (103) is rotatably connected to the center position of one side of the second rotating disk (102). A first rotating bracket (105) is symmetrically installed on one side of the inside of the first worm gear protective cover (104). The first rotating bracket (105) is fixedly mounted on the top of the first rotating bracket (105), and the output end of the first rotating bracket (106) is fixedly connected to the first rotating worm (107). Among them, a first rotating worm gear (108) is meshed with one side of the first rotating worm (107), a first rotating sleeve (109) is fixedly connected to one side of the first rotating worm gear (108), and the first rotating sleeve (109) is fixedly connected to the first rotating disk (101). Fixed connecting shafts (110) are symmetrically installed on the side of the first rotating disk (101) and the second rotating disk (102) that are close to each other. Fixed brackets (111) are fixedly installed on one side of each of the four fixed connecting shafts (110). Reciprocating brackets (112) and opening and closing brackets (113) are fixedly installed between the two sets of fixed brackets (111). A reciprocating motor (114) is fixedly installed at the end of one fixed bracket (111) near the reciprocating bracket (112). The output end of the reciprocating motor (114) is fixedly connected to a reciprocating lead screw (115). A lead screw sleeve (116) is sleeved on the outside of the reciprocating lead screw (115). A first electric telescopic rod (117) is fixedly installed on the outside of the lead screw sleeve (116). A laser cutting machine (118) is fixedly installed at the end of the first electric telescopic rod (117). On the other side, an opening and closing motor (119) is fixedly installed at the end of the fixed bracket (111) near the opening and closing bracket (113). The output end of the opening and closing motor (119) is fixedly connected to an opening and closing bidirectional threaded rod (120). The outer side of the opening and closing bidirectional threaded rod (120) is symmetrically threaded with an opening and closing threaded sleeve (121). A second electric telescopic rod (122) is fixedly installed on the outer side of each of the two opening and closing threaded sleeves (121). A second worm gear protective cover (123) is fixedly installed at the end of the second electric telescopic rod (122). A second rotating bracket (124) is symmetrically installed on the inner side of the second electric telescopic rod (122) near the second worm gear protective cover (123). A second rotating motor (125) is fixedly installed on the outer side of the second rotating bracket (124). A second rotating worm (126) is fixedly connected to the output end of the second rotating motor (125). A second rotating worm wheel (127) is meshed with one side of the second rotating worm (126). An installation sleeve (128) is fixedly installed on the outer side of the second rotating worm wheel (127). A cutting motor (129) is fixedly installed on one side of the inner side of the installation sleeve (128). A cutting blade (130) is fixedly connected to the output end of the cutting motor (129).

2. The automatic casing cutting and core extraction device for a square single-cell lithium battery according to claim 1, characterized in that: An ejector cylinder (131) is fixedly installed on one side of the interior of the second rotating disk (102). A closed baffle (132) is rotatably connected to the side of the first rotating disk (101) near the ejector cylinder (131). A circulating motor (133) is fixedly installed on the side of the first rotating worm gear (108) away from the first rotating sleeve (109). A circulating connecting shaft (134) is fixedly connected to the output end of the circulating motor (133). The circulating connecting shaft (134) is rotatably connected to the first rotating sleeve (109). A circulating rotating rod (135) is fixedly connected to the end of the circulating connecting shaft (134).

3. The automatic casing cutting and core extraction device for a square single-cell lithium battery according to claim 2, characterized in that: Both ends of the circulating rotating rod (135) are fixedly installed with circulating rotating frames (136). A number of second connecting shafts (137) are rotatably connected to the side of the two circulating rotating frames (136) that are close to each other. A limiting frame (138) is rotatably connected between the two second connecting shafts (137). A clamping bolt (139) is symmetrically threaded inside the limiting frame (138). A clamping knob (140) is fixedly installed on the outside of the clamping bolt (139). An L-shaped clamping plate (141) is rotatably connected to the end of the clamping bolt (139) away from the clamping knob (140). A square single lithium battery casing (142) is attached between the two L-shaped clamping plates (141).

4. The automatic casing cutting and core extraction device for a square single-cell lithium battery according to claim 1, characterized in that: The flue gas purification mechanism (2) includes a support frame (201), and a support base plate (202) is fixedly installed at the bottom of each of the two support frames (201). A connecting block (203) is symmetrically installed on one side of the middle of each of the two support frames (201). A cutting box (204) is fixedly installed between the connecting blocks (203). A connecting hinge (205) is symmetrically rotatably connected to both sides and the bottom of the cutting box (204). A sealing door (206) is rotatably connected to the outside of the two connecting hinges (205). A first handle (207) is fixedly installed on the outside of the sealing door (206). Rotating grooves (208) are opened on both sides of the inside of the cutting box (204). The first rotating disk (101) and the second rotating disk (102) are rotatably connected to the cutting box (204) through the rotating grooves (208). The purification box (209) is fixedly installed on the top of the purification box (209).

5. The automatic casing cutting and core extraction device for a square single-cell lithium battery according to claim 4, characterized in that: The top inner side of the purification box (209) is threaded with a connecting threaded pipe (210). An unlocking block (211) is fixedly installed on the top outer side of the connecting threaded pipe (210). A dust hood (212) is fixedly installed on the inner side of the connecting threaded pipe (210) near the unlocking block (211). A dustproof net (213) is fixedly installed on the top of the dust hood (212). A dust suction fan (214) is fixedly installed inside the dust hood (212). Several limiting rings (215) are fixedly installed on one side of the inside of the purification box (209). A flue gas adsorption carbon plate (216) is engaged inside the limiting ring (215). A limiting sliding plate (217) is fixedly installed on one side of the flue gas adsorption carbon plate (216). A second handle (218) is fixedly installed on the outer side of the limiting sliding plate (217).

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