Production device of dispersing solvent for lithium battery

Abstract

The utility model belongs to the technical field of lithium battery dispersing solvent production, and particularly relates to a lithium battery dispersing solvent production device which comprises supporting legs, a barrel body structure is installed at the tops of the supporting legs, internal heating structures are installed inside and at the top end of the barrel body structure, and an external heating structure is installed on the outer surface of the barrel body structure. The internal heating structure comprises a driving unit and a mixing unit, the driving unit comprises an asynchronous motor, the output end of the asynchronous motor is connected with a transmission part, the transmission part is internally connected with a stirring shaft, the stirring shaft is internally provided with a heating pipe, the top of the heating pipe is provided with a connector, and the connector is connected with the asynchronous motor. The middle of the top face of the connector is connected with a wire. According to the production device of the dispersing solvent for the lithium battery, the solvent can be internally heated by utilizing the heating pipe mounted in the stirring shaft, and liquid can be mixed by utilizing a lower wheel, an upper wheel and a guide plate, so that higher heating efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of production of dispersed solvents for lithium batteries, in particular to a production device for dispersed solvents for lithium batteries. Background Art

[0002] Lithium-ion batteries are composed of positive electrodes, negative electrodes, current collectors, separators, and electrolytes. To provide better static conductivity, collect the microcurrent of active substances, reduce the contact resistance between the positive electrode material and the current collector, and improve the adhesion between the two, and reduce the amount of binder used, it is necessary to evenly and finely coat the dispersed nano-conductive graphite and carbon-coated particles on the aluminum foil or copper foil of the lithium-ion battery positive electrode. In order to ensure the dispersion of the coating material and prevent flocculation, sedimentation, and other phenomena in the coating material, a dispersant is required.

[0003] In the prior art, multiple tubular reactors connected in series are used to prepare methyl pyrrolidone (NMP). In most tubular reactors, heating equipment is wrapped around the side walls of the reactor to heat the interior. This results in significant heat loss during the heating process, and the raw materials inside the reactor take a long time to reach the desired temperature. As time goes by, this further exacerbates the heat loss in the tubular reactor.

[0004] As disclosed in Chinese patent CN116351326A, a processing device and a preparation method of a lithium-ion battery positive electrode dispersant are proposed. A first reactor and a second reactor are provided with energy-saving mechanisms. The first reactor is provided with an acceleration mechanism. The outer shell wraps the heating tube to avoid heat dissipation during the heating process of the heating tube. The connection between the heat collecting tube and the heat exchange tube is used to circulate the heat transfer oil, so that the heat generated by the heating tube is accelerated to the inside of the first reactor and the second reactor, accelerating the temperature rise of the raw materials inside the reactors. The spiral staggered relationship between the heat exchange tube and the heating tube is used to reduce the heat source output of the heating tube, further reducing energy consumption. The driving component is used to make the raw materials evenly heated inside the first reactor, thereby further improving the temperature rise time of the raw materials and reducing energy consumption.

[0005] However, in the prior art, when producing the dispersion solvent, external heating is usually adopted, which usually causes more heat consumption and has a low heating efficiency for the dispersion solvent.

[0006] For this reason, we urgently need to provide a production device for a dispersed solvent for lithium batteries. Utility Model Content

[0007] The purpose of the present utility model is to provide a production device for a dispersed solvent for lithium batteries, so as to solve the problem that in the prior art proposed in the above background technology, external heating is usually adopted when producing the dispersed solvent, which usually causes more heat consumption and low heating efficiency of the dispersed solvent.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a production device for a dispersed solvent for lithium batteries, comprising a support leg, a barrel structure installed on the top of the support leg, an internal heating structure installed inside and at the top of the barrel structure, and an external heating structure installed on the outer surface of the barrel structure.

[0009] The internal heating structure includes a driving unit and a mixing unit, and the mixing unit is arranged at the bottom of the driving unit.

[0010] The driving unit includes an asynchronous motor, the output end of the asynchronous motor is connected to a transmission member, the transmission member is internally connected to a stirring shaft, a heating tube is installed inside the stirring shaft, a connector is installed on the top of the heating tube, and a wire is connected to the middle of the top surface of the connector.

[0011] Preferably, the mixing unit includes a lower wheel, an upper wheel is provided on the top of the lower wheel, and a guide plate is provided on the outer surface of the lower wheel.

[0012] Preferably, the bottom surface of the connector is rotatably connected to the top of the stirring shaft, the middle portion of the top surface of the lower wheel is connected to the bottom of the stirring shaft, and the upper wheel is mounted on the outer surface of the stirring shaft near the top. The lower wheel and the upper wheel are mounted in a mirror image, and the transmission member is a worm and worm wheel, and the worm is meshed with the outer surface of the worm wheel.

[0013] Preferably, the barrel structure includes a reactor, a feed pipe is installed in the middle of the top surface of the reactor near the right end, and a discharge pipe is installed in the middle of the bottom surface of the reactor.

[0014] Preferably, the top surface of the reactor is detachably connected to the bottom surface of the asynchronous motor, the inner wall of the reactor is fixedly connected to the guide plate, a circular hole is opened in the middle of the top surface of the reactor, and the inner wall is connected to the outer surface of the stirring shaft near the top through a bearing, and the bottom surface of the reactor is fixedly connected to the top of the support leg.

[0015] Preferably, the external heating structure includes a heating tube, an oil inlet pipe is installed near the top in the middle of the right side of the outer surface of the heating tube, the left end of the oil inlet pipe is connected to a spiral tube, the end of the spiral tube away from the oil inlet pipe is connected to an oil outlet pipe, an exhaust pipe is installed on the left side of the middle of the top surface of the heating tube, and a pressure gauge is installed on the top of the outer surface of the exhaust pipe.

[0016] Preferably, the heating tube is fixedly mounted in the middle of the reactor's outer surface, the outer surface of the spiral tube abuts against the middle of the reactor's outer surface, and the oil outlet pipe is mounted inside a through-hole in the middle of the left side of the heating tube, near the bottom. The flange end of the exhaust pipe is connected to a vacuum pump, allowing vacuum to be drawn between the interior of the heating tube and the reactor's surface.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The production device for a dispersed solvent for lithium batteries, through the arrangement of an internal heating structure, utilizes a heating tube installed inside the stirring shaft to heat the solvent internally, and utilizes the arrangement of the lower wheel, the upper wheel and the guide plate to mix the liquid, thereby ensuring higher heating efficiency.

[0019] 2. The production device for the dispersed solvent for lithium batteries, through the setting of the external heating structure, uses the spiral tube installed inside the heating cylinder to ensure better heating efficiency of the liquid. At the same time, the vacuum is drawn between the heating cylinder and the reactor by the exhaust pipe, which can more effectively reduce heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall appearance of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 This is an enlarged view of the internal structure of the hybrid reaction structure of the present utility model;

[0023] Figure 4 This is an enlarged view of the internal structure of the driving heating structure of the utility model;

[0024] Figure 5 This is an enlarged view of the external heating structure of the present utility model.

[0025] In the figure: 1. Support leg; 101. Reactor; 102. Feed pipe; 103. Discharge pipe; 201. Heating cylinder; 202. Oil inlet pipe; 203. Spiral tube; 204. Oil outlet pipe; 205. Exhaust pipe; 206. Pressure gauge; 301. Asynchronous motor; 302. Transmission part; 303. Stirring shaft; 304. Heating tube; 305. Connector; 306. Wire; 307. Lower wheel; 308. Upper wheel; 309. Guide plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0028] Example 1:

[0029] A production device for a dispersed solvent for lithium batteries includes a support leg 1, a barrel structure is installed on the top of the support leg 1, an internal heating structure is installed inside and on the top of the barrel structure, and an external heating structure is installed on the outer surface of the barrel structure.

[0030] The internal heating structure includes a drive unit and a mixing unit. The mixing unit is located at the bottom of the drive unit. The drive unit includes an asynchronous motor 301. The output end of the asynchronous motor 301 is connected to a transmission member 302. The transmission member 302 is internally connected to a stirring shaft 303. A heating tube 304 is installed inside the stirring shaft 303. A connector 305 is installed on the top of the heating tube 304. A wire 306 is connected to the middle of the top surface of the connector 305. The mixing unit includes a lower wheel 307. The upper wheel 308 is installed on the top of the lower wheel 307. The outer surface of the lower wheel 307 is provided with a guide plate 309.

[0031] The bottom surface of the connector 305 is rotatably connected to the top of the stirring shaft 303 , the middle of the top surface of the lower wheel 307 is connected to the bottom end of the stirring shaft 303 , and the upper wheel 308 is installed on the outer surface of the stirring shaft 303 near the top.

[0032] By setting up the internal heating structure, the heating tube 304 installed inside the stirring shaft 303 can heat the solvent from the inside, and the setting of the lower wheel 307, the upper wheel 308 and the guide plate 309 can mix the liquid, thereby ensuring higher heating efficiency.

[0033] When the solution is heated from the inside, the asynchronous motor 301 is started to drive the transmission member 302 for transmission. The output end of the asynchronous motor 301 drives the worm to rotate, and the worm and the worm wheel are engaged and connected, so that the worm wheel drives the stirring shaft 303 to rotate. At the same time, the wire 306 is electrically connected to the connector 305, and the connector 305 is used to start the heating tube 304 for heating. When the stirring shaft 303 rotates, it drives the lower wheel 307 and the upper wheel 308 to rotate, thereby driving the solution to mix. At the same time, the guide plate 309 is used to guide the flow of the solution. When the stirring shaft 303 and the heating tube 304 are used to heat the solution from the middle, the liquid mixing is used to increase the solution heating rate and effectively reduce heat loss.

[0034] Example 2:

[0035] Based on Example 1, the barrel structure includes a reactor 101. A feed pipe 102 is installed in the middle of the top surface of the reactor 101, near the right end, and a discharge pipe 103 is installed in the middle of the bottom surface of the reactor 101. The top surface of the reactor 101 is detachably connected to the bottom surface of the asynchronous motor 301. The inner wall of the reactor 101 is fixedly connected to the guide plate 309. The inner wall of the circular hole in the middle of the top surface of the reactor 101 is connected to the outer surface of the stirring shaft 303 near the top through a bearing. The bottom surface of the reactor 101 is fixedly connected to the top of the support leg 1.

[0036] The external heating structure includes a heating cartridge 201. An oil inlet pipe 202 is mounted near the top in the middle of the right side of the outer surface of the heating cartridge 201. A spiral tube 203 is connected to the left end of the oil inlet pipe 202. The end of the spiral tube 203, away from the oil inlet pipe 202, is connected to an oil outlet pipe 204. An air extraction pipe 205 is mounted on the left side of the middle of the top surface of the heating cartridge 201. A pressure gauge 206 is mounted on the top of the outer surface of the air extraction pipe 205. The heating cartridge 201 is fixedly mounted in the middle of the outer surface of the reactor 101. The outer surface of the spiral tube 203 abuts against the middle of the outer surface of the reactor 101. The oil outlet pipe 204 is mounted inside a through-hole opened in the middle of the left side of the heating cartridge 201, near the bottom.

[0037] By setting up the external heating structure, the spiral tube 203 installed inside the heating tube 201 can ensure better heating efficiency for the liquid. At the same time, the vacuum tube 205 is used to vacuum the space between the heating tube 201 and the reactor 101, which can more effectively reduce heat loss.

[0038] When heating the solution, hot oil is transported to the inside of the spiral tube 203 through the oil inlet pipe 202, and the spiral tube 203 is in contact with the reactor 101 to heat the reactor 101 and the solution inside. The hot oil can be refluxed and recycled through the oil outlet pipe 204. At the same time, the space between the inside of the heating tube 201 and the outer surface of the reactor 101 is evacuated by the exhaust pipe 205, so as to reduce heat loss by using the vacuum environment. At the same time, the pressure inside the heating tube 201 is monitored by the pressure gauge 206.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A production device for a dispersed solvent for lithium batteries, comprising a support leg (1), characterized in that: A barrel structure is installed on the top of the support leg (1), an internal heating structure is installed inside and on the top of the barrel structure, and an external heating structure is installed on the outer surface of the barrel structure; The internal heating structure includes a driving unit and a mixing unit, and the mixing unit is arranged at the bottom of the driving unit; The driving unit comprises an asynchronous motor (301), an output end of the asynchronous motor (301) is connected to a transmission member (302), a stirring shaft (303) is connected inside the transmission member (302), a heating tube (304) is installed inside the stirring shaft (303), a connector (305) is installed on the top of the heating tube (304), and a wire (306) is connected to the middle of the top surface of the connector (305); The mixing unit comprises a lower wheel (307), an upper wheel (308) is provided on the top of the lower wheel (307), and a guide plate (309) is provided on the outer surface of the lower wheel (307).

2. The production device of a dispersion solvent for lithium batteries according to claim 1, characterized in that: The bottom surface of the connector (305) is rotatably connected to the top end of the stirring shaft (303), the middle portion of the top surface of the lower wheel (307) is connected to the bottom end of the stirring shaft (303), and the upper wheel (308) is installed on the outer surface of the stirring shaft (303) near the top end.

3. The production device of a dispersion solvent for lithium batteries according to claim 1, characterized in that: The barrel structure comprises a reaction kettle (101), a feed pipe (102) is installed in the middle of the top surface of the reaction kettle (101) near the right end, and a discharge pipe (103) is installed in the middle of the bottom surface of the reaction kettle (101).

4. The production device of a dispersion solvent for lithium batteries according to claim 3, characterized in that: The top surface of the reactor (101) is detachably connected to the bottom surface of the asynchronous motor (301); the inner wall of the reactor (101) is fixedly connected to the guide plate (309); a circular hole is provided in the middle of the top surface of the reactor (101); the inner wall of the hole is connected to the outer surface of the stirring shaft (303) near the top through a bearing; and the bottom surface of the reactor (101) is fixedly connected to the top of the support leg (1).

5. The production device of a dispersion solvent for lithium batteries according to claim 1, characterized in that: The external heating structure comprises a heating tube (201), an oil inlet pipe (202) is installed near the top in the middle of the right side of the outer surface of the heating tube (201), a spiral tube (203) is connected to the left end of the oil inlet pipe (202), and an end of the spiral tube (203) away from the oil inlet pipe (202) is connected to the oil outlet pipe (204), an exhaust pipe (205) is installed on the left side of the middle of the top surface of the heating tube (201), and a pressure gauge (206) is installed on the top of the outer surface of the exhaust pipe (205).

6. The production device of a dispersion solvent for lithium batteries according to claim 5, characterized in that: The heating tube (201) is fixedly mounted on the middle of the outer surface of the reactor (101), the outer surface of the spiral tube (203) is in contact with the middle of the outer surface of the reactor (101), and the oil outlet pipe (204) is mounted inside a through hole opened in the middle of the left side of the heating tube (201) near the bottom.

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