Battery piece raw material recovery equipment and battery piece processing line

Abstract

The invention relates to the technical field of solid waste treatment equipment, and particularly discloses battery piece raw material recovery equipment and a battery piece processing line, the recovery equipment comprises transmission equipment, and a bulk material uniform laying part, a silver removal part, a cleaning part and a main drying part are sequentially arranged in the transmission direction; the bulk material uniform laying part is used for dispersing the materials in a pile shape on the conveying equipment; the silver removal part comprises a reaction part, a liquid supply part and a liquid discharge part, the reaction part is used for accommodating a material on the transmission equipment, the liquid supply part is used for inputting a first reaction liquid into the reaction part, and the liquid discharge part is used for discharging a reacted second reaction liquid in the reaction part; the cleaning part is used for removing residual liquid phases on the materials; the main drying part is used for drying materials. The recovery process of each raw material of the battery piece in the equipment is always in a continuous advancing state, so that the efficient and continuous recovery work of each raw material is ensured, the working efficiency is improved, and the popularization and the use of the equipment are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste treatment equipment, and particularly relates to a battery chip raw material recovery device and a battery chip processing line. Background Art

[0002] During the production process of battery chips, due to material defects (such as silicon wafer impurities, paste abnormalities), process abnormalities (uneven texturing, out-of-control diffusion doping, coating defects, printing offset, or poor sintering), mechanical damage (scratches, hidden cracks, chipped edges), substandard electrical performance (low efficiency, leakage current, abnormal EL detection), and environmental / operation factors (insufficient cleanliness, equipment failure, human error), etc., it is possible to produce defective battery chips. And materials such as silver in defective battery chips can be recycled and reused.

[0003] For example, the patent with the application number 202323277155.3 discloses a battery chip recycling and purification device, including a device housing, a feeding component, a discharging component, a cleaning component, and a transfer component. Among them, the feeding component is movably arranged on the side of the device housing, the discharging component is movably arranged on the side of the device housing, the cleaning component is arranged inside the device housing and between the feeding component and the discharging component. The transfer component includes at least one gripper, and the gripper is movably arranged inside the device housing for transferring battery chips between the feeding component, the cleaning component, and the discharging component. In this device, by arranging the feeding component and the discharging component on the side of the device housing, and by arranging the cleaning component between the feeding component and the discharging component, it can realize the automated work process that the battery chips to be recycled enter the cleaning component through the feeding platform for cleaning and then are recycled from the discharging platform. And by setting the transfer component, it is beneficial to realize the transfer of battery chips inside the device, beneficial to improving the recovery rate of battery chips, and beneficial to reducing costs.

[0004] During the operation of this device, it is necessary to transfer the battery chips to the corresponding processing device through the gripper for a certain period of time to carry out the current processing, and then it is necessary to transfer the battery chips to the next processing device through the gripper to carry out subsequent work. However, in the entire production line of battery chip recycling work, the pre-treatment devices in the early stage, such as the crushing device, etc., usually continuously and quickly provide the battery chips to be recycled to the recycling and purification device. During the operation of the recycling and purification device, operation links such as using the gripper to grab and transfer materials and the need for materials to stay during processing limit the processing efficiency of this recycling and purification device, which restricts the cooperation of the processing rhythm between it and the pre-treatment devices in the early stage. Summary of the Invention

[0005] The present invention provides a battery chip raw material recycling device, which can complete the material recycling work while the battery chips are continuously moving during operation, so as to ensure that the recycling work has a high efficiency to adapt to the working rhythm of other continuously working and highly efficient pre-treatment devices in the early stage, etc.

[0006] The present invention is realized through the following technical solutions: A battery chip raw material recycling device includes: a transmission device for driving the continuous movement of materials; a material scattering and leveling section, a silver removal section, a cleaning section, and a main drying section are sequentially arranged along the transmission direction of the materials; the material scattering and leveling section is used to disperse the materials in a pile shape on the transmission device; the silver removal section includes a reaction section, a liquid supply section, and a liquid discharge section. The reaction section is used to accommodate the materials on the transmission device. The liquid supply section is used to input a first reaction liquid into the reaction section to ensure that the first reaction liquid submerges the materials. The liquid discharge section is used to discharge the second reaction liquid that has reacted in the reaction section; the cleaning section is used to remove the residual liquid phase on the materials; the main drying section is used to dry the materials.

[0007] In the present invention, the first reaction liquid at least includes a reaction medicine liquid; the second reaction liquid at least includes a reaction medicine liquid and the first recovered material obtained by stripping; the liquid phase at least includes at least one of the first reaction liquid and the second reaction liquid. Taking the use of nitric acid to recycle the silver material in the silver grid line of the battery chip as an example, nitric acid is the reaction medicine liquid, and the silver material is the first recovered material stripped off, and it usually exists in the form of silver nitrate in the solution. Therefore, the first reaction liquid at least includes nitric acid, and the second reaction liquid at least includes nitric acid and silver nitrate.

[0008] As a further improvement of the present invention, the material scattering and leveling section includes several groups of continuously arranged leveling plates. One end of the leveling plate forms a working end, and the working end is used to contact the materials to break the piled structure of the materials. A working distance is formed between the working end of each group of leveling plates and the transmission surface of the transmission device, and the working distances of several groups of leveling plates gradually decrease along the transmission direction of the materials.

[0009] As a further improvement of the present invention, the liquid supply section includes a high-pressure liquid infusion device, and the liquid outlet of the high-pressure liquid infusion device is placed in the reaction section so that the first reaction liquid output from the liquid outlet forms an agitation effect on the first reaction liquid accumulated in the reaction section.

[0010] As a further improvement of the present invention, the silver removal section further includes a limiting section. The limiting section and the transmission surface of the transmission device surround and form a limiting area, and the limiting area is used to accommodate and limit the materials placed in the reaction section.

[0011] As a further improvement of the present invention, the material enters the reaction part at the starting end and leaves the reaction part at the ending end. A first high-pressure air outlet part is arranged at the ending end. The air outlet on the first high-pressure air outlet part is used to output high-pressure air flow, and the flow direction of the high-pressure air flow faces the position where the reaction part is located, so as to force the liquid phase remaining on the material to flow back into the reaction part. Among them, exemplarily, the flow direction of the high-pressure air flow can be parallel to the moving path but opposite to the moving direction, or perpendicular to the moving path, etc., so as to ensure that the high-pressure air flow can blow the liquid phase on the surface of the battery sheet back into the reaction part and reduce the waste of the liquid phase such as the first reaction liquid.

[0012] As a further improvement of the present invention, the first reaction liquid is used to strip the first recovered material on the material. The silver removal part further includes a treatment part. One end of the treatment part is communicated with the liquid supply part, and the other end is communicated with the liquid discharge part. The treatment part is used to separate the first recovered material in the second reaction liquid and transport the recovered first reaction liquid to the liquid supply part.

[0013] As a further improvement of the present invention, the battery sheet raw material recovery equipment includes a plurality of groups of continuously arranged cleaning parts.

[0014] As a further improvement of the present invention, in each group of cleaning parts, a spray cleaning part and a preliminary drying part are arranged in sequence along the transmission direction.

[0015] As a further improvement of the present invention, the spray cleaning part includes a high-pressure spray device for outputting cleaning liquid to the material, and the preliminary drying part includes a second high-pressure air outlet part for outputting high-pressure drying air flow to the material.

[0016] In the second aspect, the present invention provides a battery sheet processing line, which includes any one of the above-mentioned battery sheet raw material recovery equipment.

[0017] The beneficial effects of the present invention include: (1) Under the structure of the present invention, the battery sheets continuously moving on the transmission equipment will sequentially pass through the material scattering and leveling part for spreading and dispersing, then dissolve the silver grid lines on the surface in the silver removal part to complete the recovery of silver materials, then remove the residual liquid phase on the surface in the cleaning part, and finally complete the post-treatment work after being dried by the main drying part. In this way, while efficiently realizing the recovery of silver materials on the battery sheets, the battery sheets can be quickly put into other subsequent recovery processing equipment on the recovery production line through the post-treatment work, so as to achieve good connection with other equipment; the recovery process of the battery sheet raw materials in this equipment is always in a continuous development and promotion state and can adapt to the fast processing rhythm of the previous pretreatment equipment, ensuring the overall high-efficiency and continuous recovery work, improving the work efficiency, and being conducive to the popularization and use of this equipment.

[0018] (2) Usually, before carrying out the recycling work of the raw materials on the battery chips, all defective chips are collected. Therefore, when several battery chips enter the recycling equipment, their shapes, sizes, integrity, etc. are not completely unified, and even more exist in the form of battery chip fragments. At the same time, such battery chips or battery chip fragments are scattered in the storage form rather than in a regular stacked form. Therefore, based on the characteristics of the above-mentioned objects to be processed, a material scattering and leveling part is provided in the recycling equipment of the present invention, which can initially break up the pile formed by the scattered battery chips or battery chip fragments, so that the battery chips or battery chip fragments can be more evenly laid on the transmission equipment. Compared with the common form in the prior art of placing a battery chip pile in a reaction solution to remove silver, the present invention reduces the generation of the sticking situation between battery chips caused by the stacking of battery chips, and further reduces the occurrence of the situation that the outer surface of some battery chips or battery chip fragments is difficult to contact the first reaction solution when stripping the silver material in the subsequent silver removal part, thereby improving the recovery rate of the silver material on the battery chips.

[0019] (3) Under the preferred structure, the silver removal part of the present invention further includes a high-pressure liquid delivery device, which can agitate the first reaction solution accumulated in the reaction part, and this agitation effect can also agitate and even impact the battery chips on the transmission equipment. On the one hand, the agitation or impact can force the separated battery chips to separate from each other, so that the originally covered silver grid lines are exposed and can be stripped by the first reaction solution. On the other hand, the turbulent state generated after the first reaction solution is agitated increases the contact area between it and the outer surface of the battery chip, so that the first reaction solution can efficiently strip the silver material on the battery chip surface.

[0020] (4) The setting of the cleaning part in the present invention can quickly clean the battery chips after stripping the silver material on the surface to remove the liquid phase such as the first reaction solution remaining on the surface of the battery chips; and the main drying part can dry the outer surface of the battery chips. Especially after using the cleaning solution to clean the battery chips in the cleaning part, the main drying part can also achieve the effect of removing the cleaning solution. Under the above structure, the cooperation between the cleaning part and the main drying part can achieve a quick post-treatment effect on the battery chips after stripping the silver material. Usually, after removing the silver grid lines, the battery chip body still needs to carry out the recycling of silicon materials and other work in other subsequent recycling equipment. Therefore, the post-treatment work such as cleaning and drying of the battery chips in the present invention can enable the battery chip body to quickly participate in subsequent high-temperature melting and other work, realizing the mutual cooperation with other subsequent recycling equipment, and accelerating the development of the recycling work of various raw materials on the battery chips, which conforms to the efficient and fast production line processing rhythm. Description of the Drawings

[0021] The following drawings are provided for combination with the preferred embodiments in the present invention to help understand the purpose and advantages of the present invention, wherein: Figure 1 It is a schematic structural relationship diagram of a solar cell recycling device; Figure 2 It is a schematic structural diagram of the transmission device part in the solar cell recycling device.

[0022] In Figure 2 It is mainly used to assist in understanding the layout position relationship between the transmission surface on the transmission device and the object moving plate, so only part of the structure of the transmission device is shown. Specific implementation mode

[0023] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0024] In this specification, the orientation terms such as upper, lower, left, right, front, rear, front side, back side, top, bottom, etc. mentioned or likely to be mentioned are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0025] In this embodiment, the material transported by the transmission device is solar cells to be recycled as defective products. The sizes, shapes, etc. of the solar cells are not uniform, and some solar cells have been broken and exist in the form of fragments.

[0026] A solar cell recycling device provided in this embodiment mainly includes a transmission device 1, a bulk material spreading part 2, a silver removal part 3, a cleaning part 4, and a main drying part 5. The transmission device 1 is mainly used to transport solar cells, and the bulk material spreading part 2, the silver removal part 3, the cleaning part 4, and the main drying part 5 are sequentially arranged along the moving path of the solar cells.

[0027] For battery wafers or battery wafer fragments to be recycled, their storage forms are usually scattered and often exist in a stacked form. The bulk material spreading section 2 can destroy the stacked state formed by the battery wafers and make the battery wafers or battery wafer fragments spread flat on the transmission device 1. In this process, the situation where the silver grid lines on the surface of the battery wafers are difficult to expose due to mutual adhesion and other situations caused by stacking between the battery wafers is reduced. Exemplarily, the bulk material spreading section 2 adopts a vibration device arranged on the transmission device 1, which can drive the battery wafers transported thereon to vibrate in the vertical direction to destroy the stacked structure; or the bulk material spreading section 2 adopts a stirring device arranged above the transmission device 1, so that when the battery wafer stack moves past, it collides with the stack to destroy the stacked structure and force the battery wafers that were originally far from the transmission surface 101 of the transmission device 1 to fall onto the transmission surface 101. Any other device or kit that can destroy the stacked structure of the battery wafers and make them spread flat on the transmission device 1 is applicable to the present invention.

[0028] The silver removal section 3 is used to strip the silver material loaded on the surface of the battery wafers and then carry out corresponding recycling treatment. The silver removal section 3 includes a reaction section 301, a liquid supply section 302, and a liquid discharge section 303. The reaction section 301 can accommodate the battery wafers on the transmission device 1 and at the same time can accommodate the first reaction liquid provided by the liquid supply section 302, so that when the battery wafers are transported into the reaction section 301, they can be immersed in the first reaction liquid, and then the first reaction liquid can leach out the silver material in the silver grid lines on the battery wafers, completing the separation between the silver material and the other materials to achieve the recycling effect; Exemplarily, the first reaction liquid at least includes reaction medicaments such as nitric acid, cyanide, and sodium thiosulfate. At the same time, after the first reaction liquid reacts with silver, it will transform into a second reaction liquid, which at least includes reaction medicaments and silver ions. Under the structure of the present invention, the liquid discharge section 303 can discharge the second reaction liquid, and the liquid supply section 302 can continuously supply the first reaction liquid, thereby ensuring that the first reaction liquid in the reaction section 301 maintains a high concentration and can quickly realize the leaching of the silver material. At the same time, the liquid discharge section 303 can timely discharge the second reaction liquid carrying the silver material for the recycling of the silver material and other work. The cooperation between the components enables the silver removal section 3 to quickly and efficiently recycle the silver material on the battery wafers, thereby adapting to the characteristics of continuous movement and no long-term stay of the battery wafers in the present invention.

[0029] The cleaning unit 4 can clean the outer surface of the solar cell output from the silver removal unit 3 to reduce the liquid phases such as the first reaction liquid and the second reaction liquid remaining on the solar cell; the main drying unit 5 can further dry the outer surface of the solar cell to further avoid the existence of residual substances on the solar cell. Among them, since the silver material on the surface of the solar cell is removed, the remaining silicon material and other main components of the solar cell need to be recycled and reused in other subsequent recycling equipment. Therefore, it is necessary to cooperate with the cleaning unit 4 and the main drying unit 5 to clean the remaining materials of the solar cell, etc., to reduce the excessive impurities doped in the silicon material and the like obtained by subsequent recycling. Exemplarily, the cleaning unit 4 can adopt a cleaning device using liquid phase such as a spraying device capable of spraying cleaning liquid, or a cleaning device using gas phase such as a jet device spraying high-pressure air flow. The main drying device can adopt any drying device such as a drying device using high-temperature gas or a heating and drying device using microwave.

[0030] Preferably, the bulk material spreading unit 2 includes several groups of continuously arranged spreading plates 201. One end of each group of spreading plates 201 forms a working end for contacting the solar cell. In this embodiment, after contact, collision can occur between the two, so as to achieve the effect of destroying the stacked structure of the solar cell. A working distance L1 is formed between the working end of each group of spreading plates 201 and the transmission surface 101 of the transmission device 1, and the working distances L1 of several groups of spreading plates 201 gradually decrease along the transmission direction of the material. Therefore, when the stacked solar cells move, the solar cells or solar cell fragments at the top of the stack first collide with the working end of the first spreading plate 201, and then as the solar cells move, the upper and middle parts of the stack successively collide with the subsequent spreading plates 201, and finally the stack is completely destroyed and spread on the transmission surface 101. By destroying the stacking state between the solar cells or solar cell fragments, the bulk material spreading unit 2 reduces the possibility that the silver material on the outer surface is difficult to leach due to the close fitting between the solar cells after entering the silver removal unit 3, and improves the subsequent silver material recovery efficiency and recovery rate.

[0031] Preferably, the liquid supply part 302 includes a high-pressure infusion device 302-1. The liquid outlet of the high-pressure infusion device 302-1 is placed inside the reaction part 301 so that the first reaction liquid output from the liquid outlet can form an agitation effect on the first reaction liquid accumulated in the reaction part 301. This agitation effect can also impact the battery cells on the transmission device 1. On the one hand, it can force the separation between the adhered battery cells, so that the originally covered silver grid lines are exposed and can be stripped by the first reaction liquid. On the other hand, the turbulent state generated after the first reaction liquid is agitated increases its contact area with the outer surface of the battery cell, so that the first reaction liquid can efficiently strip the silver material on the surface of the battery cell. In this embodiment, the high-pressure infusion device 302-1 includes a high-pressure infusion pump, which can pressurize the liquid and transport the high-pressure liquid, that is, it can apply pressure to the first reaction liquid and drive it to flow into the reaction part 301 at a relatively fast speed.

[0032] Preferably, the silver removal part 3 further includes a limiting part 304. The limiting part 304 and the transmission surface 101 of the transmission device 1 enclose a limiting area, which is used to accommodate and limit the battery cells placed in the reaction part 301. In this structure, the range of floating displacement of the battery cells when they are placed in the first reaction liquid accumulated in the silver removal part 3 is restricted. Especially after the high-pressure infusion device 302-1 is provided in the liquid supply part 302, the limiting part 304 can greatly reduce the possibility of the battery cells flying around when the first reaction liquid is agitated. Exemplarily, the limiting part 304 can adopt a semi-cylindrical barrier net structure, which covers the transmission surface 101 to form a semi-cylindrical limiting area. When the battery cells move under the agitation of the first reaction liquid, they will collide with this barrier net structure to avoid flying around.

[0033] Preferably, the battery cell enters the reaction part 301 at the starting end and leaves the reaction part 301 at the ending end. A first high-pressure air outlet part 305 is arranged at the ending end. The air outlet on the first high-pressure air outlet part 305 is used to output high-pressure air flow, and the flow direction of the high-pressure air flow is towards the location where the reaction part 301 is located. Exemplarily, the first high-pressure air outlet part 305 includes a high-pressure gas transmission pump, which can pressurize and transmit the air flow so that the first high-pressure air outlet part 305 can output high-pressure air flow with a relatively fast flow rate. The flow direction of the high-pressure air flow is parallel to the moving path but opposite to the transmission direction of the battery cell. Therefore, it can force the remaining liquid phase on the outer surface of the battery cell to flow back into the reaction part 301 through collision. The liquid phase remaining on the battery cell includes at least one of the first reaction liquid and the second reaction liquid. After adding the first high-pressure air outlet part 305, the high-pressure air flow output by it can reduce the battery cell from taking the liquid phase out of the reaction part 301. On the one hand, it reduces the requirements for subsequent cleaning and other work. On the other hand, it reduces the waste of liquid phases such as the first reaction liquid and the second reaction liquid, improves the recovery rate of the liquid phase, etc., reduces the operating cost and improves the recovery rate of silver materials.

[0034] Preferably, the first reaction liquid is used to strip the first recovered material on the battery cell. The silver removal part 3 further includes a treatment part 306. One end of the treatment part 306 is connected to the liquid supply part 302, and the other end is connected to the liquid discharge part 303. The treatment part 306 is used to separate the first recovered material in the second reaction liquid and transport the recovered first reaction liquid to the liquid supply part 302. In this embodiment, the first recovered material is mainly silver material. Under the preferred structure, the recovery equipment of the present invention further includes a treatment part 306, which can quickly carry out further recovery treatment on the silver material stripped by the first reaction liquid. At the same time, during this period, the second reaction liquid can be reduced to the first reaction liquid and reused, greatly reducing the operating cost of the recovery equipment. Exemplarily, various methods such as the base metal displacement method, electro-deposition method, crystallization method, and sodium chloride silver precipitation method can be used in the treatment part 306 to realize the extraction and recovery of silver materials. Therefore, any supporting equipment can be used.

[0035] Preferably, the battery cell raw material recovery equipment includes several groups of continuously arranged cleaning parts 4. Under this structure, the cleaning degree of the liquid phase remaining on the surface of the battery cell is improved, and the possibility of bringing impurities into subsequent recovery work such as electrolytic silicon materials is greatly reduced.

[0036] Preferably, in each group of cleaning parts 4, a spray cleaning part 401 and a preliminary drying part 402 are arranged in sequence along the transmission direction. The spray cleaning part 401 in it realizes the removal of the remaining liquid phase on its surface by spraying cleaning liquid on the battery cell, and the preliminary drying part 402 can effectively remove the cleaning liquid.

[0037] Preferably, the spray cleaning section 401 includes a high-pressure spraying device for outputting cleaning liquid to the battery wafers, and the initial drying section 402 includes a second high-pressure air outlet section for outputting high-pressure drying air flow to the battery wafers. On the one hand, the high-pressure spraying section can achieve efficient liquid-phase removal through the collision between the high-pressure fluid and the battery wafers, and the second high-pressure air outlet section can also achieve efficient removal of the cleaning liquid through the high-pressure air flow and the battery wafers. Both can work efficiently and are adapted to the continuous and rapid movement of the battery wafers. On the other hand, both the high-pressure spraying section and the second high-pressure air outlet section can have an impact and dispersion effect on the battery wafers to disperse the battery wafers that are re-pasted after leaving the silver removal section 3 and leaving the spray cleaning section 401, further improving the cleaning rate and drying rate of the outer surface of the battery wafers. In this embodiment, both the high-pressure spraying device and the second high-pressure air outlet section use high-pressure pumps to output fluids. The high-pressure pumps can pressurize the fluids and transmit high-pressure fluids, so that the high-pressure spraying device can output cleaning liquid with a relatively fast flow rate, and the second high-pressure air outlet section can output high-pressure air flow with a relatively fast flow rate.

[0038] Preferably, a number of groups of object-moving plates 102 are provided on the conveying surface 101 of the conveying device 1. An object-moving surface 102-1 is formed on the object-moving plate 102. After the object-moving surface 102-1 comes into contact with the material, it can push the material to move along the conveying direction. Exemplarily, the object-moving surface 102-1 of the object-moving module is arranged perpendicular to the conveying direction, and the object-moving surface 102-1 is vertically placed on the conveying surface 101. When the battery wafers are conveyed into the reaction section 301, some battery wafers with relatively small mass may float up. Since the object-moving surface 102-1 of the object-moving plate 102 is higher than the conveying surface 101, after the battery wafers float up, the object-moving surface 102-1 can still come into contact with the battery wafers and drive the movement of the battery wafers.

[0039] Embodiment 1: In this embodiment, a battery wafer raw material recycling device is provided, as Figure 1 shown, which includes a conveying device 1, and a material scattering and leveling section 2, a silver removal section 3, a cleaning section 4, and a main drying section 5 are sequentially arranged in the conveying direction of the conveying device 1.

[0040] In this embodiment, the material scattering and leveling section 2 includes three groups of continuously arranged leveling plates 201. A working distance L1 is formed between the working end of each group of leveling plates 201 and the conveying surface 101 of the conveying device 1, so that Figure 1 taking the display perspective as an example, the battery wafers are conveyed from left to right. Therefore, the working distances L1 of the three groups of leveling plates 201 decrease sequentially from left to right.

[0041] The silver removal unit 3 includes a reaction unit 301, a liquid supply unit 302, a liquid discharge unit 303, a processing unit 306, and a first high-pressure air outlet 305. The reaction unit 301 is a tank structure that holds a first reaction liquid and other liquid phases. The liquid supply unit 302 includes a high-pressure liquid infusion device 302-1, the liquid outlet of which is located within the tank structure. The liquid discharge unit 303 has a liquid outlet located at the bottom of the tank structure. This structure allows the first reaction liquid provided by the liquid supply unit 302 to accumulate in the trough structure, submerging the battery cells placed on the transfer device 1. Simultaneously, the rapid delivery of the first reaction liquid by the high-pressure infusion device 302-1 promotes dispersion of the battery cells, reducing the likelihood of silver material precipitation being difficult due to adhesion between battery cells. Simultaneously, the drain unit 303 extracts the reacted second reaction liquid carrying the silver material from the trough structure, cooperating with the liquid supply unit 302 to continuously deliver the first reaction liquid, ensuring that the concentration of the first reaction liquid within the trough structure consistently meets the requirements for stripping the silver material from the battery cells. In this embodiment, both the drain unit 303 and the liquid supply unit 302 are also connected to the processing unit 306, allowing the second reaction liquid discharged from the drain unit 303 to be rapidly delivered to the processing unit 306 for reaction, removing the silver material and reducing it to the first reaction liquid for reuse. The processing unit 306 used in this embodiment is an electrolysis device, which can electrolyze the silver nitrate solution to obtain nitric acid and separate it into silver element, thereby realizing the rapid separation and recovery of the silver material and the reuse of the first reaction liquid, reducing the operating cost of the recovery equipment and ensuring the overall efficient operation of the recovery equipment.

[0042] And as Figure 1 As shown, due to the arrangement of the high-pressure infusion device 302-1, the battery cells are prone to flying around after being input into the reaction part 301. Therefore, in this embodiment, a limiting portion 304 is further provided in the silver removal part 3. The limiting portion 304 is a barrier net structure. In the silver removal part 3, the barrier net covers the transmission surface 101 and cooperates with the transmission surface 101 to form a limiting area, so that when the battery cells or battery cell fragments are scattered, they can be blocked by the limiting portion 304 and prevented from escaping from the control of the transmission surface 101.

[0043] At the same time Figure 1 As shown, a first high-pressure air outlet 305 is provided at the end where the battery cell leaves the reaction section 301. In this embodiment, the high-pressure airflow output from the air outlet of the first high-pressure air outlet 305 flows perpendicular to the transmission surface 101, so that the high-pressure airflow can blow the liquid phase remaining on the battery cell downward and drip it back into the trough structure below the transmission surface 101, thereby completing the recovery of the liquid phase and reducing the waste of the first reaction liquid and other reagents.

[0044] like Figure 1As shown in the figure, the recycling device of this embodiment includes two sets of cleaning units 4. Each set of cleaning units 4 includes a set of spray cleaning units 401 and a set of primary drying units 402. The spray cleaning unit 401 includes a high-pressure spray device, and the primary drying unit 402 includes a second high-pressure air outlet unit. This structure ensures the efficient cleaning of the outer surface of the battery cell, greatly reducing the residue of impurities such as the first reaction solution on the battery cell.

[0045] As Figure 1 shown in the figure, the main drying unit 5 in this embodiment adopts a hot air drying device. While drying the battery cell, the hot air can drive the battery cell to turn over, thereby reducing the possibility that there are dead corners on the battery cell that are not dried.

[0046] The above-mentioned components can all quickly realize the peeling of silver materials on their outer surfaces, the cleaning of the outer surfaces, and drying during the continuous transportation process of the battery cell. This enables the recycling process of various materials of the battery cell in this embodiment to be carried out continuously with high efficiency and without interruption, greatly improving the working efficiency of the recycling device and reducing the operating cost, meeting the fast-paced requirements of modern processing.

[0047] At the same time, as Figures 1 - 2 shown in the figure, in this embodiment, multiple sets of object transfer plates 102 are provided on the transfer surface 101 of the transfer device 1. The top of the object transfer plate 102 is higher than the transfer surface 101, thereby forming an accommodation space between two sets of object transfer plates 102 for accommodating materials such as battery cells. Under this structure, when the battery cell floats slightly and moves away from the transfer surface 101 when entering the first reaction solution in the reaction unit 301, the object transfer plate 102 can still come into contact with such battery cells and drive them to move, reducing the possibility of the battery cell staying in the reaction unit 301.

[0048] Embodiment 2: In this embodiment, a battery cell processing line is provided, in which the recycling device in Embodiment 1 is provided to carry out the recycling and reuse of silver materials for the battery cells detected as defective products on the processing line.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A raw material recycling device for battery chips, characterized in that, It includes: A conveying device (1) for driving the continuous movement of materials; a bulk material spreading section (2), a silver removing section (3), a cleaning section (4), and a main drying section (5) are arranged in sequence along the conveying direction of the materials; The bulk material spreading section (2) is used to disperse the materials in a heap shape on the conveying device (1); The silver removing section (3) includes a reaction section (301), a liquid supply section (302), and a liquid discharge section (303). The reaction section (301) is used to accommodate the materials on the conveying device (1). The liquid supply section (302) is used to input a first reaction liquid into the reaction section (301) to ensure that the first reaction liquid submerges the materials. The liquid discharge section (303) is used to discharge the second reaction liquid that has reacted in the reaction section (301); The cleaning section (4) is used to remove the residual liquid phase on the materials; The main drying section (5) is used to dry the materials.

2. The raw material recycling equipment for battery chips according to claim 1, characterized in that, The bulk material spreading section (2) includes several groups of continuously arranged spreading plates (201). One end of each spreading plate (201) forms a working end, and the working end is used to contact the materials to break the heap structure of the materials. A working gap (L1) is formed between the working end of each group of spreading plates (201) and the conveying surface (101) of the conveying device (1). The working gaps (L1) of several groups of spreading plates (201) gradually decrease along the conveying direction of the materials.

3. The raw material recycling equipment for battery chips according to claim 1, characterized in that, The liquid supply section (302) includes a high-pressure liquid infusion device (302-1). The liquid outlet of the high-pressure liquid infusion device (302-1) is placed inside the reaction section (301) so that the first reaction liquid output from the liquid outlet forms an agitation effect on the first reaction liquid accumulated in the reaction section (301).

4. A battery cell raw material recycling device according to any one of claims 1 to 3, characterized in that, The silver removing section (3) also includes a limiting section (304). The limiting section (304) and the conveying surface (101) of the conveying device (1) enclose a limiting area, and the limiting area is used to accommodate and limit the materials placed in the reaction section (301).

5. The raw material recycling equipment for battery chips according to claim 1, characterized in that, The materials enter the reaction section (301) at the starting end and leave the reaction section (301) at the ending end. A first high-pressure air outlet section (305) is provided at the ending end. The air outlet on the first high-pressure air outlet section (305) is used to output high-pressure air, and the flow direction of the high-pressure air is towards the position where the reaction section (301) is located to force the residual liquid phase on the materials to flow back into the reaction section (301).

6. The raw material recycling equipment for battery chips according to claim 1, wherein The first reaction liquid is used to strip the first recovered material from the materials. The silver removing section (3) also includes a treatment section (306). One end of the treatment section (306) is connected to the liquid supply section (302), and the other end is connected to the liquid discharge section (303). The treatment section (306) is used to separate the first recovered material in the second reaction liquid and convey the recovered first reaction liquid to the liquid supply section (302).

7. The raw material recycling equipment for battery chips according to claim 1, characterized in that, The battery cell raw material recovery equipment includes several groups of continuously arranged cleaning sections (4).

8. A raw material recycling device for battery chips according to any one of claims 1 or 7, characterized in that, In each of the cleaning units (4), a spray cleaning unit (401) and a primary drying unit (402) are sequentially arranged along the conveying direction.

9. The raw material recycling device for battery chips according to claim 8, wherein, The spray cleaning unit (401) includes a high-pressure spraying device for outputting cleaning liquid to the material, and the primary drying unit (402) includes a second high-pressure air outlet for outputting high-pressure drying air flow to the material.

10. A solar cell processing line, characterized in that It includes a battery raw material recycling device according to any one of claims 1 to 9.

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