Material mixing device for dry-method electrode

Abstract

The invention relates to a material mixing device for a dry-method electrode, and belongs to the technical field of battery production, the material mixing device for the dry-method electrode comprises a first base, a support, a stirring tank, a first rotating motor and a controller, the stirring tank is arranged between the first base and a cross beam, and the stirring tank comprises a barrel, a rotating shaft and a stirring shaft; rotating shafts are respectively arranged at two ends of the barrel body, the two rotating shafts are respectively and rotatably arranged on the two mounting plates, the rotating shafts are horizontally arranged, the stirring shaft is arranged in the barrel body and is coaxially arranged with the barrel body, and an included angle is formed between the stirring shaft and the horizontal plane, namely, the barrel body and the horizontal plane are arranged at an included angle. According to the material mixing device for the dry-method electrode, the first rotating motor drives the rotating shaft to rotate, so that the two ends of the barrel body alternately move up and down while the barrel body rotates, and the stirring shaft in the barrel body is matched, so that internal materials can be fully and uniformly mixed, and the mixing quality of the materials is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a material mixing device for dry-process electrodes. Background Art

[0002] The production process of battery electrodes includes wet process and dry process. The organic solvents used in the wet process have disadvantages such as high energy consumption, heavy pollution, and limited electrode thickness. The dry process can avoid the use of solvents when preparing lithium batteries. It has incomparable advantages over the wet process in reducing battery costs and improving battery performance.

[0003] In the production process of dry electrodes, powder mixing is a key link, and the powder mixing process is crucial. The polytetrafluoroethylene resin used in dry electrodes is sensitive to temperature. When the temperature exceeds 20°C, its crystal form is easily transformed into a hexagonal crystal system, which is very likely to cause microfibrillation due to friction or shearing, resulting in irreversible agglomeration and even agglomeration into blocks.

[0004] However, the existing material mixing devices have poor stirring and mixing effects and there is a problem of uneven mixing; the material mixing devices are also prone to generate dust when feeding and discharging materials, which not only causes material loss, but also pollutes the environment and endangers the health of operators; the material mixing devices also have the problem of difficult to accurately control temperature, and the performance of the material may be affected by unsuitable temperature. Summary of the invention

[0005] Based on this, it is necessary to provide a material mixing device for dry electrode to solve the technical problems existing in the prior art, such as uneven mixing, easy generation of dust during material input and output, and difficulty in precise temperature control.

[0006] To achieve the above-mentioned purpose, the present application provides a material mixing device for dry electrode, the material mixing device comprising: First base; A bracket is arranged on the top surface of the first base, and the bracket includes two mounting plates and a crossbeam. The two mounting plates are arranged at a distance and fixed on the top surface of the first base, and two ends of the crossbeam are respectively placed on the top of the two mounting plates; A stirring tank is arranged between the first base and the crossbeam, the stirring tank comprises a cylinder, a rotating shaft and a stirring shaft, the two ends of the cylinder are respectively provided with rotating shafts, the two rotating shafts are respectively rotatably arranged on two mounting plates, the rotating shaft is arranged horizontally, the stirring shaft is arranged in the cylinder and coaxially arranged with the cylinder, the stirring shaft is arranged at an angle to the horizontal plane, the stirring tank is provided with a feed inlet and a discharge port, the feed inlet and the discharge port are arranged oppositely on the outer peripheral surface of the stirring tank, and the feed inlet and the discharge port are both provided with electric control valves; A first rotating motor is fixed to the mounting plate and connected to the rotating shaft; and The controller is electrically connected to the electric control valve and the first rotating motor respectively.

[0007] Optionally, the material mixing device further comprises: A feed assembly is arranged on the crossbeam, the feed assembly comprises a feed outer tube, a feed inner tube and a first linear drive mechanism, the feed outer tube is arranged on the crossbeam, the feed inner tube is movably inserted in the feed outer tube, and the first linear drive mechanism is used to drive the feed inner tube to extend and retract; and The discharging assembly is arranged on the first base, and the discharging assembly includes an outer discharging tube, an inner discharging tube and a second linear driving mechanism. The outer discharging tube is arranged on the cross beam, and the inner discharging tube is movably inserted in the outer discharging tube. The second linear driving mechanism is used to drive the inner discharging tube to retract and retract.

[0008] Optionally, the first linear drive mechanism and the second linear drive mechanism are both pneumatic rods.

[0009] Optionally, the material mixing device further comprises an air pump, which is arranged on the material discharge outer pipe.

[0010] Optionally, the mixing tank also includes: outer cylinder; The inner cylinder is arranged in the outer cylinder, the outer cylinder and the inner cylinder are coaxially arranged, two rotating shafts are respectively arranged at two ends of the inner cylinder, and an annular gap is formed between the outer cylinder and the inner cylinder; The second stirring motor is used to drive the stirring shaft to rotate; A cooling component is disposed in the annular gap and electrically connected to the controller, and the cooling component is used to reduce the temperature of the inner cylinder; A heating component is disposed in the annular gap and electrically connected to the controller, and the heating component is used to increase the temperature of the inner cylinder; and The temperature sensor is electrically connected to the controller, and is used to monitor the temperature of the inner cylinder.

[0011] Optionally, the cooling assembly comprises: A liquid storage tank is arranged on the outer side of the mixing tank; A spiral tube is spirally wound on the outer side of the inner cylinder, and two ends of the spiral tube are respectively arranged in two rotating shafts and coaxially arranged with the rotating shafts; A liquid inlet pipe, one end of which is connected to the liquid storage tank, and the other end of which is rotatably connected to one end of the spiral tube; A liquid outlet pipe, one end of which is connected to the liquid storage tank, and the other end of which is rotatably connected to the other end of the spiral tube; and The infusion pump is arranged on the liquid inlet pipe or the liquid outlet pipe.

[0012] Optionally, the heating assembly includes a plurality of heating plates, the plurality of heating plates are arranged on the outer surface of the inner cylinder, and the spiral tube is spirally wound on the heating plates.

[0013] Optionally, the material mixing device further comprises a vibrator electrically connected to the controller, and the vibrator is arranged on the stirring tank.

[0014] Optionally, the material mixing device further comprises an iron removal component, and the iron removal component comprises: A tube body is disposed at the feed inlet; and The electromagnetic device is arranged on the tube body and is electrically connected to the controller.

[0015] Optionally, the material mixing device further comprises: A second base is arranged below the first base, and the discharge assembly is arranged between the first base and the second base; and A plurality of columns are arranged on the second base, and two ends of the columns are respectively connected to the first base and the second base.

[0016] The beneficial effect of the material mixing device for dry-process electrodes provided by the present application is that compared with the prior art, the material mixing device for dry-process electrodes of the present application includes a first base, a bracket, a stirring tank, a first rotating motor and a controller. The stirring tank is arranged between the first base and the crossbeam. The stirring tank includes a cylinder, a rotating shaft and a stirring shaft. The two ends of the cylinder are respectively provided with rotating shafts. The two rotating shafts are respectively rotatably arranged on two mounting plates. The rotating shaft is arranged horizontally, and the stirring shaft is arranged in the cylinder and coaxially with the cylinder. The stirring shaft and the horizontal plane are arranged at an angle, that is, the cylinder and the horizontal plane are arranged at an angle. The first rotating motor drives the rotating shaft to rotate, so that while the cylinder rotates, its two ends respectively move up and down alternately, and then matched with the stirring shaft inside the cylinder, the internal materials can be fully and evenly mixed, thereby improving the mixing quality of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the dry electrode material mixing device provided in the embodiment of the present application Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of the dry electrode material mixing device provided in the embodiment of the present application Figure 2 ; Figure 3 Schematic diagram of the internal structure of the stirring tank of the dry electrode material mixing device provided in the embodiment of the present application Figure 1 ; Figure 4Schematic diagram of the internal structure of the stirring tank of the dry electrode material mixing device provided in the embodiment of the present application Figure 2 ; Figure 5 A schematic diagram of the three-dimensional structure of a feed assembly of a dry electrode material mixing device provided in an embodiment of the present application; Figure 6 A schematic diagram of the three-dimensional structure of the discharge assembly of the dry electrode material mixing device provided in an embodiment of the present application.

[0019] Description of reference numerals: 1. The first base; 2. Bracket; 210. Mounting plate; 220. Crossbeam; 3. stirring tank; 310. outer cylinder; 320. inner cylinder; 330. rotating shaft; 340. stirring shaft; 350. second stirring motor; 360. cooling assembly; 361. liquid storage tank; 362. spiral tube; 363. liquid inlet pipe; 364. liquid outlet pipe; 365. infusion pump; 370. heating assembly; 371. heating plate; 4. a first rotating motor; 5. a controller; 6. Feed assembly; 610. Feed outer tube; 620. Feed inner tube; 630. First linear drive mechanism; 7. Discharging assembly; 710. Discharging outer tube; 720. Discharging inner tube; 730. Second linear drive mechanism; 8. Air pump; 9. Vibrator; 10. iron removal assembly; 1010. tube body; 1020. electromagnetic device; 11. Second base; 12. Pillar. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" 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", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] The embodiment of the present application provides a material mixing device for dry electrode, please refer to Figures 1 to 6 The material mixing device comprises a first base 1, a bracket 2, a stirring tank 3, a first rotating motor 4 and a controller 5. The bracket 2 is arranged on the top surface of the first base 1. The bracket 2 comprises two mounting plates 210 and a crossbeam 220. The two mounting plates 210 are arranged at a distance and fixed on the top surface of the first base 1. The two ends of the crossbeam 220 are respectively built on the top of the two mounting plates 210; the stirring tank 3 is arranged between the first base 1 and the crossbeam 220. The stirring tank 3 comprises a cylinder, a rotating shaft 330 and a stirring shaft 340. The two ends of the cylinder are respectively provided with rotating shafts. Shaft 330, two rotating shafts 330 are rotatably arranged on two mounting plates 210 respectively, the rotating shaft 330 is arranged horizontally, the stirring shaft 340 is arranged in the cylinder body and coaxially with the cylinder body, the stirring shaft 340 is arranged at an angle to the horizontal plane, the stirring tank 3 is provided with a feed port and a discharge port, the feed port and the discharge port are arranged opposite to each other on the outer peripheral surface of the stirring tank 3, and the feed port and the discharge port are both provided with electric control valves; the first rotating motor 4 is fixed on the mounting plate 210 and connected to the rotating shaft 330, and the controller 5 is electrically connected to the electric control valve and the first rotating motor 4 respectively.

[0027] In the embodiment of the present application, the material mixing device for dry electrode includes a first base 1, a bracket 2, a stirring tank 3, a first rotating motor 4 and a controller 5. The stirring tank 3 is arranged between the first base 1 and the crossbeam 220. The stirring tank 3 includes a cylinder, a rotating shaft 330 and a stirring shaft 340. The two ends of the cylinder are respectively provided with rotating shafts 330. The two rotating shafts 330 are respectively rotatably arranged on two mounting plates 210. The rotating shaft 330 is arranged horizontally, and the stirring shaft 340 is arranged in the cylinder and coaxially with the cylinder. The stirring shaft 340 is arranged at an angle to the horizontal plane, that is, the cylinder and the horizontal plane are arranged at an angle. The first rotating motor 4 drives the rotating shaft 330 to rotate, so that while the cylinder rotates, its two ends respectively move up and down alternately, and then with the stirring shaft 340 inside the cylinder, the internal materials can be fully and evenly mixed, thereby improving the mixing quality of the materials.

[0028] It is understandable that the material mixing device is prone to generate dust when loading and unloading materials, which not only causes material loss, but also easily pollutes the environment and endangers the health of operators.

[0029] In one embodiment, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 The material mixing device also includes a feeding component 6 and a discharging component 7. The feeding component 6 is arranged on the cross beam 220. The feeding component 6 includes a feeding outer tube 610, a feeding inner tube 620 and a first linear driving mechanism 630. The feeding outer tube 610 is arranged on the cross beam 220. The feeding inner tube 620 is movably inserted in the feeding outer tube 610. The first linear driving mechanism 630 is used to drive the feeding inner tube 620 to extend and retract; the discharging component 7 is arranged on the first base 1. The discharging component 7 includes a discharging outer tube 710, a discharging inner tube 720 and a second linear driving mechanism 730. The discharging outer tube 710 is arranged on the cross beam 220. The discharging inner tube 720 is movably inserted in the discharging outer tube 710. The second linear driving mechanism 730 is used to drive the discharging inner tube 720 to extend and retract.

[0030] By the above arrangement, when the mixing tank 3 needs to be fed, the first linear drive mechanism 630 of the feeding assembly 6 drives the feeding inner tube 620 to move downward until it docks with the feeding port, and then the electrically controlled valve at the feeding port is opened to feed, and the dust generated during the entire feeding process will not overflow, thus avoiding material loss, environmental pollution, and protecting the health of operators. Similarly, when the mixing tank 3 needs to be discharged, the second linear drive mechanism 730 of the discharging assembly 7 drives the discharging inner tube 720 to move upward until it docks with the discharging port, and then the electrically controlled valve at the discharging port is opened to discharge.

[0031] Furthermore, the feed assembly 6 further includes a first photoelectric sensor for detecting the position of the feed port, and the controller 5 controls the rotation position of the stirring tank 3 according to the detection data of the first photoelectric sensor to ensure that the position of the feed inner tube 620 corresponds to the position of the feed port. The discharge assembly 7 further includes a second photoelectric sensor for detecting the position of the discharge port, and the controller 5 controls the rotation position of the stirring tank 3 according to the detection data of the second photoelectric sensor to ensure that the position of the discharge inner tube 720 corresponds to the position of the discharge port.

[0032] In one embodiment, the first linear drive mechanism 630 and the second linear drive mechanism 730 are both pneumatic rods, which have the advantages of high driving stability, fast movement speed, and low malfunction.

[0033] In one embodiment, see Figure 2 The material mixing device also includes an air pump 8, which is arranged on the discharge outer pipe 710. The air pump 8 can be used to quickly extract the material in the mixing tank 3 to improve the discharge efficiency.

[0034] It is understandable that the material mixing device still has the problem of difficult to accurately control the temperature, and the performance of the material is easily affected by temperature inappropriateness.

[0035] In one embodiment, please refer to Figure 3 and Figure 4 The stirring tank 3 also includes an outer cylinder 310, an inner cylinder 320, a second stirring motor 350, a cooling component 360, a heating component 370 and a temperature sensor. The inner cylinder 320 is arranged in the outer cylinder 310, the outer cylinder 310 and the inner cylinder 320 are coaxially arranged, and the two rotating shafts 330 are respectively arranged at both ends of the inner cylinder 320, and an annular gap is formed between the outer cylinder 310 and the inner cylinder 320; the second stirring motor 350 is used to drive the stirring shaft 340 to rotate, the cooling component 360 is arranged in the annular gap and is electrically connected to the controller 5, and the cooling component 360 is used to reduce the temperature of the inner cylinder 320; the heating component 370 is arranged in the annular gap and is electrically connected to the controller 5, and the heating component 370 is used to increase the temperature of the inner cylinder 320; the temperature sensor is electrically connected to the controller 5, and the temperature sensor is used to monitor the temperature of the inner cylinder 320.

[0036] Through the above configuration, the controller 5 can obtain the temperature of the inner cylinder 320 in real time according to the monitoring data of the temperature sensor. When the temperature of the inner cylinder 320 exceeds the optimal temperature range, the cooling component 360 is started to cool the inner cylinder 320. When the temperature of the inner cylinder 320 is lower than the optimal temperature range, the heating component 370 is started to heat the inner cylinder 320. The temperature of the inner cylinder 320 is accurately controlled within the optimal temperature range, providing a suitable ambient temperature for material mixing and improving the mixing quality of the materials.

[0037] In one embodiment, please refer to Figures 1 to 4 The cooling assembly 360 includes a liquid storage tank 361, a spiral tube 362, a liquid inlet pipe 363, a liquid outlet pipe 364 and an infusion pump 365. The liquid storage tank 361 is arranged on the outer side of the stirring tank 3; the spiral tube 362 is spirally wound on the outer side of the inner cylinder 320, and the two ends of the spiral tube 362 are respectively arranged in two rotating shafts 330 and are coaxially arranged with the rotating shafts 330; one end of the liquid inlet pipe 363 is connected to the liquid storage tank 361, and the other end of the liquid inlet pipe 363 is rotatably connected to one end of the spiral tube 362; one end of the liquid outlet pipe 364 is connected to the liquid storage tank 361, and the other end of the liquid outlet pipe 364 is rotatably connected to the other end of the spiral tube 362, and the infusion pump 365 is arranged on the liquid inlet pipe 363 or the liquid outlet pipe 364.

[0038] In this way, the liquid storage tank 361, the spiral tube 362, the liquid inlet pipe 363, the liquid outlet pipe 364 and the infusion pump 365 form a circulation flow path, which realizes the recycling of the cooling liquid, avoids the waste of resources, and improves the utilization rate of resources.

[0039] It is understandable that a refrigeration device is provided in the liquid storage tank 361 for re-cooling the cooling liquid after use.

[0040] In one embodiment, see Figure 3 The heating assembly 370 includes a plurality of heating plates 371 , which are arranged on the outer surface of the inner cylinder 320 , and the spiral tube 362 is spirally wound on the heating plates 371 .

[0041] Furthermore, according to actual processing conditions, most working conditions require heating the inner cylinder 320 , so the heating component 370 adopts a heating plate 371 with higher heating efficiency, and the heating plate 371 is in direct contact with the inner cylinder 320 , and the spiral tube 362 of the cooling component 360 is wound on the heating plate 371 .

[0042] In one embodiment, see Figure 1 The material mixing device also includes a vibrator 9 electrically connected to the controller 5 , and the vibrator 9 is arranged on the stirring tank 3 .

[0043] Specifically, the vibrator 9 is started intermittently, and the vibrator 9 can vibrate the materials adhering to the inner wall of the mixing tank 3 to make them fall off, so that the materials can be fully and evenly mixed, thereby improving the mixing quality of the materials.

[0044] In one embodiment, please refer to Figure 1 and Figure 2 The material mixing device also includes an iron removal component 10, which includes a tube body 1010 and an electromagnetic device 1020. The tube body 1010 is arranged at the feed inlet, and the electromagnetic device 1020 is arranged on the tube body 1010. The electromagnetic device 1020 is electrically connected to the controller 5.

[0045] Through the above arrangement, when the material flows through the tube body 1010, the ferromagnetic material in the material is magnetized under the action of the magnetic field of the electromagnetic device 1020, and is thereby attracted by the magnetic force, moves to the area with higher magnetic field intensity, and adsorbs on the inner wall surface of the tube body 1010, while the material that is not adsorbed enters the stirring tank 3, thereby realizing the separation of iron impurities and the material.

[0046] In one embodiment, please refer to Figure 1 and Figure 2 The material mixing device also includes a second base 11 and a plurality of columns 12. The second base 11 is arranged below the first base 1 at a distance, and the discharging assembly 7 is arranged between the first base 1 and the second base 11; the plurality of columns 12 are arranged on the second base 11, and the two ends of the columns 12 are respectively connected to the first base 1 and the second base 11.

[0047] In this way, the space between the first base 1 and the second base 11 provides a laying space for the discharge pipe, and the air pump 8 can also be arranged on the second base 11.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A material mixing device for dry electrode, characterized in that: include: First base; A bracket, arranged on the top surface of the first base, the bracket comprising two mounting plates and a crossbeam, the two mounting plates are arranged at a distance and fixed on the top surface of the first base, and the two ends of the crossbeam are respectively placed on the top of the two mounting plates; A stirring tank is arranged between the first base and the crossbeam, the stirring tank comprises a cylinder, a rotating shaft and a stirring shaft, the rotating shafts are respectively arranged at both ends of the cylinder, the two rotating shafts are respectively rotatably arranged on the two mounting plates, the rotating shaft is arranged horizontally, the stirring shaft is arranged in the cylinder and coaxially with the cylinder, the stirring shaft is arranged at an angle to the horizontal plane, the stirring tank is provided with a feed inlet and a discharge port, the feed inlet and the discharge port are arranged oppositely on the outer circumference of the stirring tank, and the feed inlet and the discharge port are both provided with electric control valves; A first rotating motor, fixed to the mounting plate and connected to the rotating shaft; and A controller is electrically connected to the electric-controlled valve and the first rotating motor respectively.

2. The dry electrode material mixing device according to claim 1, characterized in that: The material mixing device also includes: A feed assembly is arranged on the crossbeam, the feed assembly comprises a feed outer tube, a feed inner tube and a first linear drive mechanism, the feed outer tube is arranged on the crossbeam, the feed inner tube is movably inserted in the feed outer tube, and the first linear drive mechanism is used to drive the feed inner tube to extend and retract; and A discharging assembly is arranged on the first base, and the discharging assembly includes an outer discharging tube, an inner discharging tube and a second linear driving mechanism. The outer discharging tube is arranged on the cross beam, and the inner discharging tube is movably inserted in the outer discharging tube. The second linear driving mechanism is used to drive the inner discharging tube to retract and retract.

3. The dry electrode material mixing device according to claim 2, characterized in that: The first linear drive mechanism and the second linear drive mechanism are both pneumatic rods.

4. The material mixing device for dry electrode according to claim 2, characterized in that: The material mixing device also includes an air pump, which is arranged on the material discharging outer pipe.

5. The dry electrode material mixing device according to any one of claims 1 to 4, characterized in that: The stirring tank also includes: outer cylinder; An inner cylinder is arranged in the outer cylinder, the outer cylinder and the inner cylinder are coaxially arranged, the two rotating shafts are respectively arranged at two ends of the inner cylinder, and an annular gap is formed between the outer cylinder and the inner cylinder; A second stirring motor, used for driving the stirring shaft to rotate; A cooling component is disposed in the annular gap and electrically connected to the controller, and the cooling component is used to reduce the temperature of the inner cylinder; a heating component, disposed in the annular gap and electrically connected to the controller, the heating component being used to increase the temperature of the inner cylinder; and A temperature sensor is electrically connected to the controller, and the temperature sensor is used to monitor the temperature of the inner cylinder.

6. The dry electrode material mixing device according to claim 5, characterized in that: The cooling assembly comprises: A liquid storage tank, arranged on the outer side of the stirring tank; A spiral tube, spirally wound on the outer side of the inner cylinder, with two ends of the spiral tube respectively disposed in the two rotating shafts and coaxially disposed with the rotating shafts; A liquid inlet pipe, one end of which is connected to the liquid storage tank, and the other end of which is rotatably connected to one end of the spiral pipe; a liquid outlet pipe, one end of which is connected to the liquid storage tank, and the other end of which is rotatably connected to the other end of the spiral pipe; and An infusion pump is arranged on the liquid inlet pipe or the liquid outlet pipe.

7. The material mixing device for dry electrode according to claim 6, characterized in that: The heating assembly comprises a plurality of heating plates, the plurality of heating plates are arranged on the outer surface of the inner cylinder, and the spiral tube is spirally wound on the heating plates.

8. The dry electrode material mixing device according to any one of claims 1 to 4, characterized in that: The material mixing device also includes a vibrator electrically connected to the controller, and the vibrator is arranged on the stirring tank.

9. The material mixing device for dry electrode according to any one of claims 1 to 4, characterized in that: The material mixing device also includes an iron removal component, and the iron removal component includes: A tube body, disposed at the feed inlet; and The electromagnetic device is arranged on the tube body and is electrically connected to the controller.

10. The dry electrode material mixing device according to any one of claims 2 to 4, characterized in that: The material mixing device also includes: A second base is arranged below the first base at a certain distance, and the discharge assembly is arranged between the first base and the second base; and A plurality of columns are arranged on the second base, and two ends of the columns are respectively connected to the first base and the second base.

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