Electrolytic regeneration device for positive electrode material of waste battery

Abstract

The utility model provides a waste battery positive electrode material electrolytic regeneration device which comprises an electrolytic regeneration box, a heating mechanism, a positive electrode electric rod, a first stirring mechanism and a negative electrode mechanism, a regeneration cavity is formed in the electrolytic regeneration box, and an acid leaching liquid inlet pipe, a flushing liquid inlet pipe, an electrolyte outlet pipe and a flushing liquid outlet pipe are arranged on the electrolytic regeneration box; the pickle liquor inlet pipe, the flushing fluid inlet pipe, the electrolyte outlet pipe and the flushing fluid outlet pipe are all communicated with the regeneration cavity, and the electrolyte outlet pipe and the flushing fluid outlet pipe are both located at the positions close to the inner bottom wall of the regeneration cavity; the heating mechanism is arranged in the regeneration cavity; the positive electrode electric rod is arranged on the electrolysis regeneration box, the wiring end of the positive electrode electric rod is located on the outer side of the electrolysis regeneration box, and the end, away from the wiring end, of the positive electrode electric rod is located in the regeneration cavity; and the first stirring mechanism is arranged in the electrolysis regeneration box, the stirring end of the first stirring mechanism is located in the regeneration cavity, a complex metal ion extraction and separation procedure is not needed, and the positive electrode material recycling process is simple.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery material production equipment, and in particular to an electrolytic regeneration device for waste battery positive electrode materials. Background Art

[0002] The cathode materials of lithium-ion batteries are mainly lithium cobalt oxide, lithium nickel cobalt manganese, lithium nickel oxide, lithium nickel cobalt aluminum and lithium iron phosphate, etc. These materials contain precious metals such as cobalt and lithium. In lithium-ion batteries, the cost of cathode materials accounts for about 30%-40% of the total cost of the battery. Therefore, the recycling of cathode materials of lithium-ion batteries is of great significance.

[0003] Therefore, the existing positive electrode material recycling is to separate the current collector (aluminum foil) and the active material, and obtain the corresponding metal through leaching and extraction separation for recycling. This method requires leaching, extraction purification, reconfiguration of metal ion ratio, sintering and other processes, making the positive electrode material recycling process more complicated, such as patent CN209652393U. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an electrolytic regeneration device for waste battery positive electrode materials that does not require extraction and has a relatively simple recovery process.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A device for electrolytic regeneration of positive electrode materials of waste batteries, comprising:

[0007] An electrolytic regeneration box, wherein a regeneration chamber is formed in the electrolytic regeneration box, and an acid leaching liquid inlet pipe, a flushing liquid inlet pipe, an electrolyte outlet pipe and a flushing liquid outlet pipe are respectively provided on the electrolytic regeneration box; the acid leaching liquid inlet pipe, the flushing liquid inlet pipe, the electrolyte outlet pipe and the flushing liquid outlet pipe are all connected to the regeneration chamber, and the electrolyte outlet pipe and the flushing liquid outlet pipe are both located adjacent to the inner bottom wall of the regeneration chamber;

[0008] A heating mechanism, wherein the heating mechanism is disposed in the regeneration chamber;

[0009] A positive electrode rod, wherein the positive electrode rod is arranged on the electrolysis regeneration box, and the connection terminal of the positive electrode rod is located outside the electrolysis regeneration box, and the end of the positive electrode rod away from the connection terminal is located in the regeneration chamber;

[0010] A first stirring mechanism is provided in the electrolytic regeneration box, and a stirring end of the first stirring mechanism is located in the regeneration chamber;

[0011] A negative electrode mechanism, the negative electrode mechanism includes a transmission assembly and a negative electrode rod, the transmission assembly is installed on the outside of the electrolytic regeneration box; the negative electrode rod is rotatably arranged in the regeneration chamber, the connection terminal of the negative electrode rod is located on the outside of the electrolytic regeneration box, and the negative electrode rod is connected to the power output end of the transmission assembly.

[0012] In one embodiment, the first stirring mechanism includes a first driving assembly and a first stirring blade, the first driving assembly is installed on the outside of the electrolysis regeneration box, the first stirring blade is rotatably connected to the electrolysis regeneration box, one end of the first stirring blade is located on the outside of the electrolysis regeneration box and connected to the rotating driving end of the first driving assembly, and the other end of the first stirring blade is located in the regeneration chamber.

[0013] In one of the embodiments, a nozzle is installed in the regeneration chamber, the nozzle is arranged toward the negative electrode rod, and the nozzle is connected to the flushing liquid inlet pipe.

[0014] In one of the embodiments, the contour of the nozzle is arranged corresponding to the negative electrode rod, and the positive projection area of ​​the negative electrode rod on the spraying surface of the nozzle is smaller than the area of ​​the spraying surface.

[0015] In one of the embodiments, a plurality of spray holes are formed on the spray surface of the spray head, and the plurality of spray holes are distributed in a rectangular array.

[0016] In one embodiment, the negative electrode mechanism also includes a conductive frame and a negative electrode wire post; the conductive frame is located in the regeneration chamber, the electrolytic regeneration box is provided with a fixing hole, the negative electrode wire post is passed through the fixing hole, one end of the negative electrode wire post is located in the regeneration chamber and fixedly connected to the conductive frame, and the other end of the negative electrode wire post is the connection terminal of the negative electrode rod; the conductive frame is rotatably connected to the negative electrode rod, and the conductive frame is electrically connected to the negative electrode rod.

[0017] In one embodiment, there are multiple negative electrode rods, and the multiple negative electrode rods are electrically connected through the conductive frame. Each negative electrode rod is provided with a transmission shaft, and the electrolysis regeneration box is provided with a rotation hole. The transmission shaft is passed through the rotation hole and is rotationally connected to the electrolysis regeneration box.

[0018] The transmission assembly includes a driving motor, a transmission belt and a plurality of transmission wheels. The driving motor is installed on the outside of the electrolytic regeneration box. Each of the transmission wheels is located on the outside of the electrolytic regeneration box and is sleeved on the corresponding transmission shaft. The driving shaft of the driving motor is connected to one of the transmission shafts, and the transmission belts are respectively sleeved on the plurality of transmission wheels.

[0019] In one embodiment, the cross-section of the negative electrode rod has a wavy shape with alternating concave and convex shapes.

[0020] In one embodiment, the negative electrode rod includes a rod body and a plurality of fins spaced apart along an outer peripheral wall of the rod body.

[0021] In one of the embodiments, a lower hopper connected to the regeneration chamber is provided at the bottom of the electrolytic regeneration box.

[0022] In one embodiment, the electrolytic regeneration device for waste battery positive electrode materials also includes an acid leaching mechanism and a second stirring mechanism; the acid leaching mechanism includes an acid leaching tank, an acid solution inlet pipe, a peracetic acid inlet pipe, a lithium ion liquid inlet pipe and a waste positive electrode powder inlet pipe after impurities are removed, and the acid solution inlet pipe, the peracetic acid inlet pipe, the lithium ion liquid inlet pipe and the waste positive electrode powder inlet pipe after impurities are all connected to the acid leaching tank; the acid leaching tank is connected to the acid leaching liquid inlet pipe through a first pipeline, and a first liquid inlet pump is provided on the first pipeline; the second stirring mechanism is installed in the acid leaching tank, and the second stirring mechanism is used to stir the liquid in the acid leaching tank.

[0023] In one embodiment, the electrolytic regeneration device for waste battery positive electrode materials also includes an impurity removal mechanism, which includes an inlet pipe for waste positive electrode powder before impurity removal, an impurity removal box and a heating element. The inlet pipe for waste positive electrode powder before impurity removal is connected to the impurity removal box, and the impurity removal box is connected to the inlet pipe for waste positive electrode powder after impurity removal through a second pipe, and the second pipe is provided with an air flow pump; the heating element is arranged in the impurity removal box.

[0024] Compared with the prior art, the present invention has at least the following advantages:

[0025] 1. The above-mentioned electrolytic regeneration device for positive electrode materials of waste batteries, the terminal of the positive electrode rod is electrically connected to the positive electrode, and the terminal of the negative electrode rod is electrically connected to the negative electrode. When working, the acid leaching solution is first input into the regeneration chamber through the acid leaching solution inlet pipe for electrolysis, and the first stirring mechanism works at the same time to accelerate the electrolysis process and improve the efficiency of electrolytic regeneration of positive electrode materials of the battery. The heating mechanism works to raise the temperature in the regeneration chamber to a predetermined temperature, and regenerated positive electrode materials are generated on the negative electrode rod; then the electrolyte in the regeneration chamber is discharged through the electrolyte outlet pipe; and then the washing The agent is input into the regeneration chamber through the flushing liquid inlet pipe, and at the same time, the transmission component drives the negative electrode rod to rotate, so as to fully wash the negative electrode rod and wash away the alkali solution on the surface of the negative electrode rod; then the washing liquid in the regeneration chamber is discharged through the washing liquid outlet pipe, and at the same time, the first stirring mechanism works to accelerate the electrolysis process and improve the efficiency of electrolysis regeneration of the positive electrode material of the battery, and the heating mechanism works to raise the temperature in the regeneration chamber to a predetermined temperature to dry the regenerated positive electrode material on the surface of the negative electrode rod, so that the regenerated positive electrode material of the negative electrode rod falls and is recovered under the action of gravity;

[0026] 2. The above-mentioned electrolytic regeneration device for waste battery positive electrode materials regenerates positive electrode powder that does not contain aluminum foil, and does not require a complicated extraction and separation process for metal ions, making the positive electrode material recovery process simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of an electrolytic regeneration device for waste battery positive electrode materials according to an embodiment;

[0029] Figure 2 for Figure 1 A partial structural schematic diagram of a device for electrolytic regeneration of positive electrode materials of used batteries shown;

[0030] Figure 3 for Figure 2 A cross-sectional view of a device for electrolytic regeneration of positive electrode materials of used batteries shown;

[0031] Figure 4 for Figure 2 Another cross-sectional view of the electrolytic regeneration device for the positive electrode material of waste batteries shown;

[0032] Figure 5 A schematic diagram of a negative electrode rod of a negative electrode mechanism of a device for electrolytic regeneration of positive electrode materials of waste batteries according to another embodiment;

[0033] Figure 6 This is a schematic diagram of the negative electrode rod of the negative electrode mechanism of the electrolytic regeneration device for positive electrode materials of waste batteries in another embodiment.

[0034] Reference numerals:

[0035] 100, electrolytic regeneration box; 102, acid leaching liquid inlet pipe; 103, storage tank; 104, flushing liquid inlet pipe; 1042, first input pump; 1044, second valve; 105, regeneration chamber; 1052, nozzle; 1054, spray hole; 106, electrolyte outlet pipe; 1062, first output pump; 1064, first valve; 108, flushing liquid outlet pipe; 1082, second output pump; 1084, third valve; 109, fixing hole; 110, rotating hole; 120, lower hopper; 200, heating mechanism; 300, positive electrode rod; 400, first stirring mechanism; 410, first driving assembly; 420, first stirring blade; 500, negative electrode mechanism; 510, transmission assembly; 511, 2. Driving motor; 514. Transmission belt; 516. Transmission wheel; 520. Negative electrode rod; 522. Rod body; 524. Fin; 530. Conductive frame; 532. Conductive frame body; 532a. Installation area; 534. Bearing; 540. Negative electrode column; 600. De-impurity mechanism; 610. Waste positive electrode powder inlet pipe before de-impurity; 620. De-impurity box; 630. Heating element; 700. Acid leaching mechanism; 710. Acid leaching tank; 720. Acid inlet pipe; 730. Peracetic acid inlet pipe; 740. Lithium ion liquid inlet pipe; 750. Waste positive electrode powder inlet pipe after de-impurity; 800. Second stirring mechanism; 900. First pipeline; 910. First liquid inlet pump; 1100. Second pipeline; 1120. Air flow pump. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0040] like Figures 1 to 3 As shown, an electrolytic regeneration device for positive electrode materials of used batteries in one embodiment is used to regenerate positive electrode materials. The electrolytic regeneration device for positive electrode materials of used batteries comprises an electrolytic regeneration box 100, a heating mechanism 200, a positive electrode rod 300, a first stirring mechanism 400 and a negative electrode mechanism 500.

[0041] like Figures 1 to 3 As shown, the electrolytic regeneration box 100 is respectively provided with an acid leaching liquid inlet pipe 102, a flushing liquid inlet pipe 104, an electrolyte outlet pipe 106 and a flushing liquid outlet pipe 108. In this embodiment, a regeneration chamber 105 is formed in the electrolytic regeneration box 100, and the acid leaching liquid inlet pipe 102, the flushing liquid inlet pipe 104, the electrolyte outlet pipe 106 and the flushing liquid outlet pipe 108 are all connected to the regeneration chamber 105. The electrolyte outlet pipe 106 and the flushing liquid outlet pipe 108 are both located adjacent to the inner bottom wall of the regeneration chamber 105.

[0042] like Figure 3 and Figure 4 As shown, the heating mechanism 200 is arranged on the inner wall of the regeneration chamber 105. Further, the heating mechanism 200 includes a plurality of electric heating wires, the inner wall of the electrolytic regeneration box 100 is formed with a receiving groove 103, and the outer wall of the electrolytic regeneration box 100 is provided with a wire inlet hole (not shown) connected to the receiving groove 103, each electric heating wire is located in the receiving groove 103, and each electric heating wire is externally connected to the conducting hole for conducting electricity; when the electric heating wire is energized, the electric heating wire generates heat to heat the inner wall of the electrolytic regeneration box 100. In this embodiment, the receiving groove 103 is formed between the inner wall of the regeneration chamber 105 and the outer wall of the electrolytic regeneration box 100, and the receiving groove 103 is separated from the regeneration chamber 105.

[0043] like Figures 2 to 4 As shown, the positive electrode rod 300 is arranged on the electrolysis regeneration box 100, and the connection terminal of the positive electrode rod 300 is located outside the electrolysis regeneration box 100, and the end of the positive electrode rod 300 away from the connection terminal is located in the regeneration chamber 105. The first stirring mechanism 400 is arranged in the electrolysis regeneration box 100, and the stirring end of the first stirring mechanism 400 is located in the regeneration chamber 105. After the acid leaching liquid is input into the regeneration chamber 105 through the acid leaching liquid inlet pipe 102, the first stirring mechanism 400 stirs the liquid in the regeneration chamber 105.

[0044] like Figures 2 to 3As shown, the negative electrode mechanism 500 includes a transmission assembly 510 and a negative electrode rod 520, and the transmission assembly 510 is installed on the outside of the electrolytic regeneration box 100; the negative electrode rod 520 is rotatably arranged in the regeneration chamber 105, and the connection terminal of the negative electrode rod 520 is located on the outside of the electrolytic regeneration box 100, and the negative electrode rod 520 is connected to the power output end of the transmission assembly 510; when the electrolyte in the regeneration chamber 105 is discharged, the transmission assembly 510 drives the negative electrode rod 520 to rotate relative to the electrolytic regeneration box 100, and at the same time, the washing liquid is input through the flushing liquid inlet pipe 104 to fully wash the negative electrode rod 520.

[0045] like Figures 2 to 3 As shown, in this embodiment, the connection terminal of the positive electrode rod 300 and the connection terminal of the negative electrode rod 520 are both located outside the electrolytic regeneration box 100. The connection terminal of the positive electrode rod 300 is electrically connected to the positive electrode, and the connection terminal of the negative electrode rod 520 is electrically connected to the negative electrode. During operation, the acid leaching solution is first input into the regeneration chamber 105 through the acid leaching solution inlet pipe 102 for electrolysis. At the same time, the first stirring mechanism 400 works to accelerate the electrolysis process and improve the efficiency of electrolysis regeneration of the positive electrode material of the battery. The heating mechanism 200 works to raise the temperature in the regeneration chamber 105 to a predetermined temperature, and regenerated positive electrode material is generated on the negative electrode rod 520; then the electrolyte in the regeneration chamber 105 is discharged through the electrolyte outlet pipe 106; then the detergent is input into the regeneration chamber 105 through the flushing liquid inlet pipe 104. In the regeneration chamber 105, the transmission assembly 510 drives the negative electrode rod 520 to rotate at the same time, so as to fully wash the negative electrode rod 520 and wash away the alkaline solution on the surface of the negative electrode rod 520; then the washing liquid in the regeneration chamber 105 is discharged through the flushing liquid outlet pipe, and at the same time the first stirring mechanism 400 works to accelerate the electrolysis process and improve the efficiency of electrolysis regeneration of the positive electrode material of the battery, and the heating mechanism 200 works to raise the temperature in the regeneration chamber 105 to a predetermined temperature, so as to dry the regenerated positive electrode material on the surface of the negative electrode rod 520, so that the regenerated positive electrode material of the negative electrode rod 520 falls and is recovered under the action of gravity.

[0046] The above-mentioned electrolytic regeneration device for waste battery positive electrode materials regenerates and recycles positive electrode powder that does not contain aluminum foil, and does not require a complicated extraction and separation process for metal ions, making the positive electrode material recovery process simpler.

[0047] like Figures 2 to 3 As shown, the electrolyte outlet pipe 106 is further provided with a first output pump 1062, and the electrolyte in the regeneration chamber 105 is drained through the electrolyte outlet pipe 106 by the first output pump 1062 to improve the discharge efficiency of the electrolyte. In this embodiment, the electrolyte outlet pipe 106 is provided with a first valve 1064.

[0048] like Figures 2 to 3As shown, further, the flushing liquid inlet pipe 104 is provided with a first input pump 1042, and the detergent is input through the flushing liquid inlet pipe 104 by the first input pump 1042, thereby improving the input efficiency of the detergent. In this embodiment, the flushing liquid inlet pipe 104 is provided with a second valve 1044.

[0049] like Figures 2 to 3 As shown, further, the flushing liquid outlet pipe 108 is provided with a second output pump 1082, and the washing liquid in the electrolytic regeneration box 100 is drained through the flushing liquid outlet pipe by the second output pump 1082, thereby improving the discharge efficiency of the washing liquid. In this embodiment, the flushing liquid outlet pipe 108 is provided with a third valve 1084.

[0050] like Figures 2 to 3 As shown, in one embodiment, the first stirring mechanism 400 includes a first driving assembly 410 and a first stirring blade 420, the first driving assembly 410 is installed on the outside of the electrolysis regeneration box 100, the first stirring blade 420 is rotatably connected to the electrolysis regeneration box 100, one end of the first stirring blade 420 is located on the outside of the electrolysis regeneration box 100 and is connected to the rotating driving end of the first driving assembly 410, and the other end of the first stirring blade 420 is located in the regeneration chamber 105; when the first driving assembly 410 is working, the first driving assembly 410 drives the first stirring blade 420 to rotate, and since the other end of the first stirring blade 420 is located in the regeneration chamber 105, the first stirring blade 420 stirs the liquid in the regeneration chamber 105. In this embodiment, the first driving assembly 410 is installed on the top side of the electrolysis regeneration box 100 through a fixing frame (not shown).

[0051] like Figures 2 to 3 As shown, in one embodiment, a nozzle 1052 is installed in the regeneration chamber 105, and the nozzle 1052 is arranged toward the negative electrode rod 520. The nozzle 1052 is connected to the flushing liquid inlet pipe 104. During flushing, the flushing liquid is input through the flushing liquid inlet pipe 104 and sprayed on the outer surface of the negative electrode rod 520 through the nozzle 1052. In addition, the transmission component 510 drives the negative electrode rod 520 to rotate relative to the electrolysis regeneration box 100, so that the negative electrode rod 520 is more fully washed. In this embodiment, the positive electrode rod 300 and the negative electrode rod 520 are both in the shape of long strips. The nozzle 1052 can be fixed on the inner wall of the regeneration chamber 105 through a limit frame (not shown).

[0052] like Figures 2 to 3 As shown, in one embodiment, the profile of the nozzle 1052 is set corresponding to the negative electrode rod 520, and the positive projection area of ​​the negative electrode rod 520 on the spraying surface of the nozzle 1052 is smaller than the area of ​​the spraying surface, so that the nozzle 1052 can better spray the outer surface of the negative electrode rod 520. In this embodiment, the nozzle 1052 is a plate-like structure, and the dimensions of the nozzle 1052 in the length direction and the width direction are adapted to the negative electrode rod 520.

[0053] like Figures 2 to 3 As shown, in one embodiment, the spraying surface of the nozzle 1052 is provided with a plurality of spray holes 1054, and the plurality of spray holes 1054 are distributed in a rectangular array, so that the nozzle 1052 can better spray the outer surface of the negative electrode rod 520 with alkali solution, and ensure that the alkali solution on the surface of the regenerated positive electrode material on the negative electrode rod 520 can be fully washed, so that the purity of the regenerated positive electrode material after drying is higher, and the quality of the regenerated positive electrode material is improved. In this embodiment, the plurality of spray holes 1054 are distributed in a rectangular array along the nozzle 1052 in the length direction and the width direction.

[0054] like Figures 2 to 4 As shown, in one embodiment, the negative electrode mechanism 500 also includes a conductive frame 530 and a negative electrode post 540; the conductive frame 530 is located in the regeneration chamber 105, the electrolytic regeneration box 100 is provided with a fixing hole 109, the negative electrode post 540 is passed through the fixing hole 109, one end of the negative electrode post 540 is located in the regeneration chamber 105 and is fixedly connected to the conductive frame 530, and the other end of the negative electrode post 540 is the connection terminal of the negative electrode rod 520; the conductive frame 530 is rotatably connected to the negative electrode rod 520, and the conductive frame 530 is electrically connected to the negative electrode rod 520. During operation, the terminal of the negative electrode rod 520 is electrically connected to the negative electrode, and the terminal of the negative electrode rod 520 is electrically connected to the negative electrode rod 520 through the conductive frame 530. The detergent is input into the regeneration chamber 105 through the flushing liquid inlet pipe 104. At the same time, the transmission assembly 510 drives the negative electrode rod 520 to rotate, and the negative electrode rod 520 rotates relative to the conductive frame 530.

[0055] like Figures 2 to 4 As shown, further, the conductive frame 530 includes a conductive frame body 532 and a bearing 534. The conductive frame body 532 is provided with a mounting area 532a. The outer ring of the bearing 534 is located in the mounting area and is fixedly connected to the conductive frame body 532. The inner ring of the bearing 534 is sleeved on the negative electrode rod 520 and is fixedly connected to the negative electrode rod 520, so that the negative electrode rod 520 is rotatably connected to the conductive frame body 532. In this embodiment, the mounting area is a mounting hole or a mounting groove. The outer ring of the bearing is welded to the conductive frame body 532.

[0056] like Figures 2 to 4As shown, in one embodiment, there are multiple negative electrode rods 520, and the multiple negative electrode rods 520 are electrically connected through a conductive frame 530. Each negative electrode rod 520 is provided with a transmission shaft, and the electrolytic regeneration box 100 is provided with a rotating hole 110. The transmission shaft is passed through the rotating hole 110 and is rotatably connected to the electrolytic regeneration box 100; the transmission assembly 510 includes a driving motor 512, a transmission belt 514 and a plurality of transmission wheels 516. The driving motor 512 is installed on the outside of the electrolytic regeneration box 100, and each transmission wheel 516 is located on the outside of the electrolytic regeneration box 100 and is sleeved on the electrolytic regeneration box 100. On the corresponding transmission shaft, the driving shaft of the driving motor 512 is connected to one of the transmission shafts, and the transmission belts 514 are respectively mounted on multiple transmission wheels 516. When the driving motor 512 is working, one of the transmission shafts rotates, and one of the transmission shafts drives the corresponding transmission wheel 516 to rotate, so that the transmission wheel 516 drives multiple transmission wheels 516 to rotate through the transmission belt 514, thereby realizing the synchronous rotation of multiple negative electrode rods 520 relative to the electrolytic regeneration box 100, thereby improving the processing capacity and output of waste positive electrode materials, and improving the ability of the electrolytic regeneration device to process waste positive electrode materials.

[0057] like Figures 2 to 4 As shown, in one embodiment, the cross-sectional profile of the negative electrode rod 520 is a wave shape with alternating concave and convex shapes, which increases the surface area of ​​the negative electrode rod 520 for adsorbing the regenerated positive electrode material and improves the processing capacity and output of waste positive electrode materials.

[0058] It is understood that in other embodiments, the cross-sectional profile of the negative electrode rod 520 is not limited to a wavy shape with alternating concave and convex shapes. Figure 5 or Figure 6 As shown, for example, in one embodiment, the negative electrode rod 520 includes a rod body 522 and a plurality of fins 524 spaced apart along the outer peripheral wall of the rod body 522, which increases the surface area of ​​the negative electrode rod 520 for absorbing and regenerating the positive electrode material, thereby increasing the processing capacity and output of the waste positive electrode material. Furthermore, the cross section of each fin 524 is rectangular or triangular.

[0059] like Figure 3 As shown, in one embodiment, a lower hopper 120 connected to the regeneration chamber 105 is provided at the bottom of the electrolytic regeneration box 100 to collect the regenerated positive electrode material that falls after drying.

[0060] like Figure 1 and Figure 2As shown, in one embodiment, the electrolytic regeneration device for waste battery positive electrode materials also includes an acid leaching mechanism 700 and a second stirring mechanism 800; the acid leaching mechanism 700 includes an acid leaching tank 710, an acid solution inlet pipe 720, a peracetic acid inlet pipe 730, a lithium ion liquid inlet pipe 740, and a waste positive electrode powder inlet pipe 750 after impurities are removed, and the acid solution inlet pipe 720, the peracetic acid inlet pipe 730, the lithium ion liquid inlet pipe 740, and the waste positive electrode powder inlet pipe 750 after impurities are removed are all connected to the acid leaching tank 710; the acid leaching tank 710 is connected to the acid leaching liquid inlet pipe 102 through a first pipeline 900, and a first liquid inlet pump 910 is provided on the first pipeline 900; the second stirring mechanism 800 is installed on the acid leaching tank 710, and the second stirring mechanism 800 is used to stir the liquid in the acid leaching tank 710. In this embodiment, the waste positive electrode powder after impurities are first input into the waste positive electrode powder inlet pipe 750 after impurities are removed, hydrochloric acid is input through the acid solution inlet pipe 720, and peracetic acid is input through the peracetic acid inlet pipe 730, and then the second stirring mechanism 800 stirs for 1 hour to 3 hours; then the lithium hydroxide solution is input into the lithium ion liquid inlet pipe 740, and stirred for 0.5 hours to 2 hours to generate an acid leaching solution, which provides the required electrolyte for the electrolytic regeneration mechanism, that is, provides raw materials for the regeneration of the battery positive electrode material; the acid leaching solution generated in the acid leaching tank 710 is input into the acid leaching solution inlet pipe 102 through the first pipeline 900.

[0061] like Figure 1 As shown, in one embodiment, the electrolytic regeneration device for waste battery positive electrode materials also includes a de-impurity mechanism 600, which includes a waste positive electrode powder inlet pipe 610 before de-impurity removal, a de-impurity box 620 and a heating element 630. The waste positive electrode powder inlet pipe 610 before de-impurity removal is connected to the de-impurity box 620, and the waste battery powder without aluminum foil enters the de-impurity box 620 through the waste positive electrode powder inlet pipe 610 before de-impurity removal to remove the electrolyte and binder in the waste battery powder without aluminum foil; the heating element 630 is arranged in the de-impurity box 620; the de-impurity box 620 is connected to the waste positive electrode powder inlet pipe 750 after de-impurity removal through the second pipeline 1100, and the second pipeline 1100 is provided with an air flow pump 1120 to enable the waste positive electrode powder after de-impurity removal to be better input through the second pipeline 1100.

[0062] like Figures 1 to 4 As shown, in one embodiment, the working process of the electrolytic regeneration device for waste battery positive electrode materials includes:

[0063] First, in the impurity removal step, the waste positive electrode powder without aluminum foil is fed into the impurity removal box 620 through the waste positive electrode powder inlet pipe 610 before impurity removal, the heating element 630 is turned on, the temperature in the impurity removal box 620 is increased to between 550° and 650°, and the powder is calcined at high temperature for between 2h and 12h to remove the electrolyte and binder in the positive electrode powder;

[0064] Secondly, the acid leaching step, that is, first inputting the waste positive electrode powder after impurities removal into the waste positive electrode powder inlet pipe 750, inputting hydrochloric acid into the acid solution inlet pipe 720, inputting peracetic acid into the peracetic acid inlet pipe 730, and then stirring for 1h to 3h; then inputting LiOH solution into the lithium ion solution inlet pipe 740, stirring for 0.5h to 2h through the second stirring mechanism 800 to generate an acid leaching solution;

[0065] Then, an electrolysis step is performed, i.e., the acid leaching solution is input into the regeneration chamber 105 through the acid leaching solution inlet pipe 102, the positive electrode rod 300 (Pt electrode) is electrically connected to the positive electrode, and the negative electrode rod 520 (Ni electrode) is electrically connected to the negative electrode, and electrolysis is performed. At the same time, the first stirring mechanism 400 and the heating mechanism 200 are operated, and the electric heating wire raises the temperature in the regeneration chamber 105 to between 80° and 100°. The heating time is 6h to 10h, and a regenerated positive electrode material is generated on the negative electrode of the negative electrode rod 520;

[0066] Then, a washing step is performed, i.e., the electrolyte in the regeneration chamber 105 is drained through the electrolyte outlet pipe 106 by the first output pump 1062, the washing liquid inlet pipe 104 is supplied with detergent through the first input pump 1042, the nozzle 1052 sprays the detergent toward the negative electrode rod 520, and the transmission motor is started, the negative electrode rod 520 rotates, and the negative electrode rod 520 is fully washed to wash away the alkaline solution including the LiOH solution on the surface of the negative electrode rod 520;

[0067] Then, in the drying step, the washing liquid in the regeneration chamber 105 is drained through the second output pump 1082 through the washing liquid outlet pipe 108, and the electric heating wire heats the regeneration chamber 105 to between 80° and 100°, and dries the regenerated positive electrode material on the surface of the negative electrode rod 520;

[0068] Finally, in the recycling step, i.e., the drying process, the regenerated positive electrode material on the surface of the negative electrode rod 520 falls under the action of gravity and enters the receiving hopper for recycling. In order to speed up the speed and efficiency of the regenerated positive electrode material on the surface of the negative electrode rod 520 falling, further, an external air pump (not shown) is connected to the flushing liquid inlet pipe 104, and the nozzle 1052 blows air toward the negative electrode rod 520, and at the same time, the negative electrode rod 520 rotates under the drive of the drive motor 512, thereby accelerating the recovery of the regenerated positive electrode material.

[0069] The above-described embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present disclosure. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the attached claims.

Claims

1. A device for electrolytic regeneration of positive electrode materials of waste batteries, characterized in that: include: An electrolytic regeneration box (100), wherein a regeneration chamber (105) is formed in the electrolytic regeneration box (100), and the electrolytic regeneration box (100) is respectively provided with an acid leaching liquid inlet pipe (102), a flushing liquid inlet pipe (104), an electrolyte outlet pipe (106), and a flushing liquid outlet pipe (108); the acid leaching liquid inlet pipe (102), the flushing liquid inlet pipe (104), the electrolyte outlet pipe (106), and the flushing liquid outlet pipe (108) are all in communication with the regeneration chamber (105), and the electrolyte outlet pipe (106) and the flushing liquid outlet pipe (108) are both located adjacent to the inner bottom wall of the regeneration chamber (105); A heating mechanism (200), the heating mechanism (200) being arranged on the inner wall of the regeneration chamber (105); A positive electrode rod (300), the positive electrode rod (300) being arranged on the electrolysis regeneration box (100), and the connection terminal of the positive electrode rod (300) being located outside the electrolysis regeneration box (100), and the end of the positive electrode rod (300) facing away from the connection terminal being located in the regeneration chamber (105); a first stirring mechanism (400) disposed in the electrolytic regeneration box (100), wherein a stirring end of the first stirring mechanism (400) is located in the regeneration chamber (105); A negative electrode mechanism (500), the negative electrode mechanism (500) comprising a transmission assembly (510) and a negative electrode rod (520), the transmission assembly (510) being installed on the outside of the electrolysis regeneration box (100); the negative electrode rod (520) being rotatably arranged in the regeneration chamber (105), the connection terminal of the negative electrode rod (520) being located on the outside of the electrolysis regeneration box (100), and the negative electrode rod (520) being connected to the power output end of the transmission assembly (510).

2. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 1, characterized in that: The first stirring mechanism (400) includes a first driving component (410) and a first stirring blade (420), wherein the first driving component (410) is installed on the outside of the electrolysis regeneration box (100), and the first stirring blade (420) is rotatably connected to the electrolysis regeneration box (100), one end of the first stirring blade (420) is located on the outside of the electrolysis regeneration box (100) and is connected to the rotating driving end of the first driving component (410), and the other end of the first stirring blade (420) is located in the regeneration chamber (105).

3. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 1, characterized in that: A nozzle (1052) is installed in the regeneration chamber (105), the nozzle (1052) is arranged toward the negative electrode rod (520), and the nozzle (1052) is connected to the flushing liquid inlet pipe (104).

4. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 3 is characterized in that: The contour of the nozzle (1052) is arranged corresponding to the negative electrode rod (520), and the positive projection area of ​​the negative electrode rod (520) on the spraying surface of the nozzle (1052) is smaller than the area of ​​the spraying surface; and / or, The spraying surface of the spray head (1052) is provided with a plurality of spray holes (1054), and the plurality of spray holes (1054) are distributed in a rectangular array.

5. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 1, characterized in that: The negative electrode mechanism (500) further comprises a conductive frame (530) and a negative electrode post (540); the conductive frame (530) is located in the regeneration chamber (105); the electrolytic regeneration box (100) is provided with a fixing hole (109); the negative electrode post (540) is passed through the fixing hole (109); one end of the negative electrode post (540) is located in the regeneration chamber (105) and is fixedly connected to the conductive frame (530); the other end of the negative electrode post (540) is a connection terminal of the negative electrode rod (520); the conductive frame (530) is rotatably connected to the negative electrode rod (520), and the conductive frame (530) is electrically connected to the negative electrode rod (520).

6. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 5, characterized in that: There are a plurality of negative electrode rods (520), and the plurality of negative electrode rods (520) are electrically connected via the conductive frame (530). Each negative electrode rod (520) is provided with a transmission shaft. The electrolysis regeneration box (100) is provided with a rotation hole (110). The transmission shaft is passed through the rotation hole (110) and is rotationally connected to the electrolysis regeneration box (100). The transmission assembly (510) includes a driving motor (512), a transmission belt (514) and a plurality of transmission wheels (516); the driving motor (512) is installed on the outside of the electrolytic regeneration box (100); each of the transmission wheels (516) is located on the outside of the electrolytic regeneration box (100) and is sleeved on the corresponding transmission shaft; the driving shaft of the driving motor (512) is connected to one of the transmission shafts; and the transmission belt (514) is sleeved on the plurality of transmission wheels (516) respectively.

7. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 1, characterized in that: The cross-sectional profile of the negative electrode rod (520) is in a wave shape with alternating concave and convex shapes; or, The negative electrode rod (520) comprises a rod body (522) and a plurality of fins (524) arranged at intervals along the outer peripheral wall of the rod body (522).

8. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 1, characterized in that: A lower hopper (120) communicating with the regeneration chamber (105) is provided at the bottom of the electrolytic regeneration box (100).

9. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 1, characterized in that: The invention also comprises an acid leaching mechanism (700) and a second stirring mechanism (800); the acid leaching mechanism (700) comprises an acid leaching tank (710), an acid liquid inlet pipe (720), a peracetic acid inlet pipe (730), a lithium ion liquid inlet pipe (740) and a waste positive electrode powder inlet pipe (750) after impurities are removed; the acid liquid inlet pipe (720), the peracetic acid inlet pipe (730), the lithium ion liquid inlet pipe (740) and the waste positive electrode powder inlet pipe (750) after impurities are removed are all connected to the acid leaching tank (710); the acid leaching tank (710) is connected to the acid leaching liquid inlet pipe (102) through a first pipe (900); a first liquid inlet pump (910) is provided on the first pipe (900); the second stirring mechanism (800) is installed on the acid leaching tank (710), and the second stirring mechanism (800) is used to stir the liquid in the acid leaching tank (710).

10. The electrolytic regeneration device for positive electrode materials of waste batteries according to claim 9, characterized in that: The invention also comprises an impurity removal mechanism (600), the impurity removal mechanism (600) comprising a waste positive electrode powder inlet pipe (610) before impurity removal, an impurity removal box (620) and a heating element (630), the waste positive electrode powder inlet pipe (610) before impurity removal being connected to the impurity removal box (620), the impurity removal box (620) being connected to the waste positive electrode powder inlet pipe (750) after impurity removal via a second pipe (1100), the second pipe (1100) being provided with an air flow pump; the heating element (630) being arranged in the impurity removal box (620).

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