A drying device for processing battery positive electrode additives
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU BAIKILOMETER NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-08-07
AI Technical Summary
[0002]电池正极加工助剂是在正极材料制备过程中添加的一类辅助材料，主要用于优化生产工艺、改善电极性能或降低成本，在锂离子电池制造过程中，正极助剂的烘干工艺直接影响材料的电化学性能和批次稳定性，尤其对于纳米级或高活性正极助剂，易导致颗粒团聚、局部过热或残留溶剂超标，为此，提出一种用于加工电池正极助剂的烘干装置
1、本实用新型提出的一种用于加工电池正极助剂的烘干装置，通过设置的热利用机构，通过回流管将烘干桶内产生的热量进行引导入导热铜管的内部，然后使热量对导热铜管进行加热，然后使导热铜管对冷却液进行加热，然后使冷却液为烘干桶进行保温，从而避免了烘干桶桶身大量热量流失和烘干时产生的热量废弃的问题。
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Figure CN224608102U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery additive production equipment technology, and in particular to a drying device for processing battery positive electrode additives. Background Technology
[0002] Battery cathode processing aids are a class of auxiliary materials added during the preparation of cathode materials. They are mainly used to optimize production processes, improve electrode performance, or reduce costs. In the manufacturing process of lithium-ion batteries, the drying process of cathode aids directly affects the electrochemical performance and batch stability of the materials. Especially for nanoscale or highly active cathode aids, it is easy to cause particle agglomeration, local overheating, or excessive residual solvent. Therefore, a drying device for processing battery cathode aids is proposed.
[0003] Some existing drying devices do not achieve uniform drying results when drying battery cathode additives. The additives that are in contact with the walls of the drying drum are dried much more effectively than those in the center of the drum. Furthermore, the heat generated during the drying process cannot be effectively recycled and reused, resulting in energy waste and hindering the reduction of energy consumption of the drying equipment.
[0004] Therefore, those skilled in the art have provided a drying apparatus for processing battery cathode additives to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a drying device for processing battery positive electrode additives. Through a heat utilization mechanism, heat generated inside the drying drum is guided into the interior of a heat-conducting copper pipe via a return pipe. This heat then heats the copper pipe, which in turn heats the coolant, which in turn keeps the drying drum warm. This avoids significant heat loss from the drying drum and the waste of heat generated during drying.
[0006] To achieve the above objectives, the present invention provides the following technical solution: A drying device for processing battery cathode additives includes a discharge mechanism, a heat utilization mechanism at the upper end of the discharge mechanism, the heat utilization mechanism including a heat preservation barrel and a gas box, a drying barrel fixedly connected to the inner bottom surface of the heat preservation barrel, a spraying mechanism inside the drying barrel, the spraying mechanism including a servo motor fixedly connected to the center of the upper surface of the heat preservation barrel, the output end of the servo motor penetrating into the interior of the drying barrel and fixedly connected to a spraying shaft, multiple spraying blades fixedly connected to the shaft body of the spraying shaft, multiple support columns fixedly connected to the inner wall of the drying barrel, and an arc-shaped ring fixedly connected to the outer wall of each support column near the middle of the drying barrel. The inner wall of the heat-insulating barrel is fixedly connected with a heat-conducting copper pipe, a spiral cavity is opened at the edge of the inside of the drying barrel, a high-temperature gas pump is fixedly connected to one side of the upper surface of the gas box, an industrial-grade high-temperature gas heater is fixedly connected to the inner bottom surface of the gas box, and a circulation pipe is provided at the rear end of the heat-insulating barrel. The above technical solution, through the cooperation of the spraying mechanism and the heat utilization mechanism, can improve the uniformity of drying of the battery positive electrode additive while effectively reducing the energy consumption of the equipment, so that it consumes less electricity when operating continuously.
[0007] Furthermore, the discharge mechanism includes a base plate, the insulated bucket is fixed to the front end of the upper surface of the base plate, and the gas box is fixed to the rear end of the upper surface of the base plate; The above technical solution effectively supports and fixes the insulated container and gas box through the base plate.
[0008] Furthermore, a motor cavity is provided at the rear end of the base plate, and a drive motor is fixedly connected to the inner bottom surface of the motor cavity. The output end of the drive motor passes through the motor cavity to the inside of the base plate and is fixedly connected to a drive shaft. An auger blade is fixedly connected to the shaft of the drive shaft, and a conical hopper is fixedly connected to the outer wall of the front end of the base plate. Through the above technical solution, the set discharge mechanism can effectively and automatically discharge the battery positive electrode additive after drying.
[0009] Furthermore, the input end of the high-temperature gas pump is connected to the gas box, the output end of the high-temperature gas pump is fixedly connected to a delivery pipe, the end of the delivery pipe away from the high-temperature gas pump passes through the insulation barrel and is connected to the lower end of the spiral cavity, one end of the circulation pipe passes through the insulation barrel and is connected to the upper end of the spiral cavity, and the other end of the circulation pipe is connected to the gas box. The above technical solution involves using a high-temperature gas pump to transport high-temperature inert gas from inside the gas tank. This high-temperature inert gas then circulates within the spiral cavity, heating the walls of the drying drum. This process, combined with the spraying mechanism, completes the drying of the battery positive electrode additive.
[0010] Furthermore, one end of the reflux pipe is connected to the drying barrel, and the other end of the reflux pipe is connected to one end of the heat-conducting copper pipe. An exhaust valve pipe is fixedly connected to the front end of the insulation barrel body, and the exhaust valve pipe is connected to the other end of the heat-conducting copper pipe body. The above technical solution effectively uses heat-conducting copper pipes and return pipes to keep the drying drum warm by the heat generated during drying.
[0011] Furthermore, the inside of the heat preservation barrel is filled with coolant, the inside of the gas box is filled with inert gas, the rear end of the upper surface of the heat preservation barrel is provided with a filling groove, and a temperature sensor is fixedly connected to one inner wall of the gas box. Through the above technical solution, the coolant can effectively keep the drying barrel warm, the filling tank can more easily inject the battery positive electrode additive into the drying barrel, and the temperature sensor can effectively measure the temperature of the inert gas inside the gas box through the external control panel.
[0012] Furthermore, a discharge valve pipe is fixedly connected to the lower surface of the drying barrel, and the lower end of the discharge valve pipe is in communication with the bottom plate; The above technical solution allows the dried battery positive electrode additive to be effectively discharged into the bottom plate via the discharge valve pipe.
[0013] Furthermore, an air inlet valve pipe is fixedly connected to the outer wall of the rear end of the gas box, and the air inlet valve pipe communicates with the gas box. The above technical solution makes it easier to replenish the gas tank with inert gas.
[0014] This utility model has the following beneficial effects: 1. The present invention proposes a drying device for processing battery positive electrode additives. Through a heat utilization mechanism, the heat generated in the drying barrel is guided into the interior of the heat-conducting copper pipe through the return pipe. The heat then heats the heat-conducting copper pipe, which in turn heats the coolant. The coolant then keeps the drying barrel warm, thereby avoiding the problem of a large amount of heat loss from the drying barrel and the waste of heat generated during drying.
[0015] 2. The present invention proposes a drying device for processing battery positive electrode additives. Through a set spraying mechanism, a servo motor drives the spraying shaft to rotate at high speed, thereby driving the spraying blades to rotate at high speed. The additives are then sprayed upwards by the inclined spraying blades and then thrown into the upper end of the arc-shaped ring by centrifugal force. The additives then adhere to the barrel wall along the arc-shaped ring, thereby improving the uniformity of additive drying. Attached Figure Description
[0016] Figure 1 This is an isometric view of a drying device for processing battery positive electrode additives proposed in this utility model; Figure 2 This is a partial axial cross-sectional view of a drying device for processing battery positive electrode additives proposed in this utility model; Figure 3This is a schematic diagram of the spraying mechanism in a drying device for processing battery positive electrode additives proposed in this utility model. Figure 4 This is a cross-sectional view of the discharge mechanism in a drying device for processing battery positive electrode additives proposed in this utility model. Figure 5 This is a schematic diagram of the structure of a drying device for processing battery positive electrode additives proposed in this utility model; Figure 6 This is a cross-sectional view of the gas chamber in a drying device for processing battery positive electrode additives proposed in this utility model.
[0017] Legend: 1. Discharge mechanism; 101. Base plate; 102. Drive motor; 103. Screw blades; 104. Drive shaft; 105. Conical hopper; 106. Motor cavity; 2. Heat utilization mechanism; 201. Insulated barrel; 202. Heat-conducting copper pipe; 203. Spiral cavity; 204. Drying barrel; 205. Discharge valve pipe; 206. Return pipe; 207. Circulation pipe; 208. Gas box; 209. High-temperature gas pump; 210. Inlet valve pipe; 211. Conveying pipe; 212. Exhaust valve pipe; 3. Spraying mechanism; 301. Servo motor; 302. Spraying shaft; 303. Spraying blades; 304. Arc ring; 305. Support column.
[0018] 4. Injection tank; 5. Industrial-grade high-temperature gas heater; 6. Temperature sensor. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] One specific embodiment of this utility model is provided: Reference Figure 1 , Figure 2 and Figure 5 : A drying device for processing battery cathode additives includes a discharge mechanism 1. A heat utilization mechanism 2 is provided at the upper end of the discharge mechanism 1. The heat utilization mechanism 2 includes a heat preservation barrel 201 and a gas box 208. A drying barrel 204 is fixedly connected to the inner bottom surface of the heat preservation barrel 201. A spraying mechanism 3 is provided inside the drying barrel 204. The spraying mechanism 3 includes a servo motor 301 fixedly connected at the center of the upper surface of the heat preservation barrel 201. The output end of the servo motor 301 extends into the interior of the drying barrel 204 and is fixedly connected to a spraying shaft 302. Multiple spraying blades 303 are fixedly connected to the shaft of the spraying shaft 302. Multiple support columns 305 are fixedly connected to the inner wall of the drying barrel 204. An arc-shaped ring 304 is fixedly connected to the outer wall of the support column 305 near the middle of the drying barrel 204. A heat-conducting copper pipe 202 is fixedly connected to the inner wall of the heat-insulating barrel 201. A spiral cavity 203 is opened at the edge inside the drying barrel 204. A high-temperature gas pump 209 is fixedly connected to one side of the upper surface of the gas box 208. An industrial-grade high-temperature gas heater 5 is fixedly connected to the inner bottom surface of the gas box 208. A circulation pipe 207 is provided at the rear end of the heat-insulating barrel 201. By combining the spraying mechanism 3 and the heat utilization mechanism 2, the uniformity of drying of the battery positive electrode additive can be improved, while the energy consumption of the equipment can be effectively reduced, so that less electricity is consumed when it operates continuously.
[0021] Reference Figure 1 , Figure 2 and Figure 4 : The discharge mechanism 1 includes a base plate 101, an insulated barrel 201 fixed to the front end of the upper surface of the base plate 101, and a gas box 208 fixed to the rear end of the upper surface of the base plate 101. The base plate 101 can effectively support and fix the insulated barrel 201 and the gas box 208. A motor cavity 106 is opened at the rear end of the base plate 101. A drive motor 102 is fixedly connected to the bottom surface of the inner bottom of the motor cavity 106. The output end of the drive motor 102 passes through the motor cavity 106 to the inside of the base plate 101 and is fixedly connected to a drive shaft 104. A screw conveyor blade 103 is fixedly connected to the shaft of the drive shaft 104. A conical hopper 105 is fixedly connected to the outer wall of the front end of the base plate 101. The discharge mechanism 1 can effectively and automatically discharge the dried battery positive electrode additives from the device.
[0022] Reference Figure 2 , Figure 3 and Figure 6 : The input end of the high-temperature gas pump 209 is connected to the gas box 208, and the output end of the high-temperature gas pump 209 is fixedly connected to the delivery pipe 211. The end of the delivery pipe 211 away from the high-temperature gas pump 209 passes through the insulation barrel 201 and is connected to the lower end of the spiral cavity 203. One end of the circulation pipe 207 passes through the insulation barrel 201 and is connected to the upper end of the spiral cavity 203. The other end of the circulation pipe 207 is connected to the gas box 208. The high-temperature gas pump 209 delivers the high-temperature inert gas inside the gas box 208, thereby allowing the high-temperature inert gas to circulate within the spiral cavity 203. The gas flows around the drying drum 204 and then heats the wall of the drying drum 204 with inert gas. This, in conjunction with the spraying mechanism 3, completes the drying of the battery positive electrode additive. One end of the return pipe 206 is connected to the drying drum 204, and the other end of the return pipe 206 is connected to one end of the heat-conducting copper pipe 202. The front end of the heat-insulating drum 201 is fixedly connected to the exhaust valve pipe 212, which is connected to the other end of the heat-conducting copper pipe 202. The heat-conducting copper pipe 202 and the return pipe 206 can effectively keep the heat generated during drying in the drying drum 204.
[0023] Reference Figure 2 , Figure 4 and Figure 6 : The insulated container 201 contains coolant, and the gas chamber 208 contains inert gas. A filling groove 4 is located at the rear end of the upper surface of the insulated container 201. A temperature sensor 6 is fixedly connected to the inner wall of one side of the gas chamber 208. The coolant effectively insulates the drying container 204, and the filling groove 4 facilitates the injection of battery positive electrode additive into the drying container 204. The temperature sensor 6 allows for effective monitoring of the gas chamber 204 via an external control panel. The temperature of the inert gas inside the gas tank 208 is measured. A discharge valve pipe 205 is fixedly connected to the lower surface of the drying barrel 204. The lower end of the discharge valve pipe 205 is connected to the bottom plate 101. The dried battery positive electrode additive can be effectively discharged into the bottom plate 101 through the discharge valve pipe 205. An air inlet valve pipe 210 is fixedly connected to the outer wall of the rear end of the gas tank 208. The air inlet valve pipe 210 is connected to the gas tank 208, so that the inert gas inside the gas tank 208 can be replenished more conveniently.
[0024] In this embodiment, the coolant is preferably a coolant with a boiling point ≥120℃, and the inert gas is preferably helium.
[0025] Working Principle: During use, the additive is injected into the drying drum 204 through the filling tank 4 by opening the threaded cap. Then, the inert gas inside the gas box 208 is heated by the industrial-grade high-temperature gas heater 5. After reaching a suitable temperature, the inert gas is extracted from the gas box 208 by the high-temperature gas pump 209 and transported to the spiral cavity 203 through the conveying pipe 211. The spiral cavity 203 then heats the drying drum 204. The inert gas then re-enters the gas box 208 through the circulation pipe 207 for reheating. This cycle continues to raise the temperature of the drying drum 204. Simultaneously, the servo motor 301 drives the spraying shaft 302 to rotate at high speed, which in turn drives the spraying blades 303 to rotate at high speed. This causes the spraying blades 303 to spray the additive inside the drying drum 204. The centrifugal force during spraying causes the additive to fall into the arc. The upper surface of the arc-shaped ring 304 is then moved towards the wall of the drying barrel 204 by the curvature of the arc-shaped ring 304, so that the additive comes into contact with the heat of the barrel wall. At the same time, the heat and hot air generated in the drying barrel 204 during drying can flow into the interior of the heat-conducting copper pipe 202 through the return pipe 206, and then the spiral flow inside the heat-conducting copper pipe 202 heats the pipe body of the heat-conducting copper pipe 202, and then the heat-conducting copper pipe 202 heats the coolant inside the heat-insulating barrel 201, so that the heated coolant keeps the drying barrel 204 warm. After the additive is dried, the discharge valve pipe 205 is opened to let the additive fall into the interior of the bottom plate 101 through the discharge valve pipe 205. Then the drive motor 102 is started to drive the drive shaft 104 to rotate, so that the drive shaft 104 drives the auger blades 103 to rotate, and thus the additive is discharged through the conical hopper 105.
[0026] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.
[0027] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The specific meaning of the above terms in this utility model shall be understood by those skilled in the art based on the specific circumstances. In addition, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation on this utility model; the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A drying apparatus for processing battery positive electrode additives, comprising a discharge mechanism (1), characterized in that: The upper end of the discharge mechanism (1) is provided with a heat utilization mechanism (2). The heat utilization mechanism (2) includes a heat preservation barrel (201), a gas box (208) and a return pipe (206). The inner bottom surface of the heat preservation barrel (201) is fixedly connected to a drying barrel (204). The interior of the drying barrel (204) is provided with a spraying mechanism (3). The spraying mechanism (3) includes a servo motor (301) fixedly connected at the center of the upper surface of the heat preservation barrel (201). The output end of the servo motor (301) passes through the interior of the drying barrel (204) and is fixedly connected to a spraying shaft (302). The shaft of the spraying shaft (302) is fixedly connected to multiple spraying blades (303). The inner wall of the drying barrel (204) is fixedly connected to multiple support columns (305). The outer wall of the support column (305) near the middle of the drying barrel (204) is fixedly connected to an arc-shaped ring (304). The inner wall of the heat-insulating barrel (201) is fixedly connected to a heat-conducting copper pipe (202), a spiral cavity (203) is opened at the edge inside the drying barrel (204), a high-temperature gas pump (209) is fixedly connected to one side of the upper surface of the gas box (208), an industrial-grade high-temperature gas heater (5) is fixedly connected to the inner bottom surface of the gas box (208), and a circulation pipe (207) is provided at the rear end of the heat-insulating barrel (201).
2. The drying apparatus for processing battery positive electrode additives according to claim 1, characterized in that: The discharge mechanism (1) includes a base plate (101), the heat preservation barrel (201) is fixed to the front end of the upper surface of the base plate (101), and the gas box (208) is fixed to the rear end of the upper surface of the base plate (101).
3. A drying apparatus for processing battery positive electrode additives according to claim 2, characterized in that: The rear end of the base plate (101) is provided with a motor cavity (106). A drive motor (102) is fixedly connected to the inner bottom surface of the motor cavity (106). The output end of the drive motor (102) passes through the motor cavity (106) to the interior of the base plate (101) and is fixedly connected to a drive shaft (104). The shaft body of the drive shaft (104) is fixedly connected to an auger blade (103). A conical hopper (105) is fixedly connected to the outer wall of the front end of the base plate (101).
4. A drying apparatus for processing battery positive electrode additives according to claim 1, characterized in that: The input end of the high-temperature gas pump (209) is connected to the gas box (208), and the output end of the high-temperature gas pump (209) is fixedly connected to the delivery pipe (211). The end of the delivery pipe (211) away from the high-temperature gas pump (209) passes through the heat preservation barrel (201) and is connected to the lower end of the spiral cavity (203). One end of the circulation pipe (207) passes through the heat preservation barrel (201) and is connected to the upper end of the spiral cavity (203). The other end of the circulation pipe (207) is connected to the gas box (208).
5. A drying apparatus for processing battery positive electrode additives according to claim 1, characterized in that: One end of the return pipe (206) is connected to the drying barrel (204), and the other end of the return pipe (206) is connected to one end of the heat-conducting copper pipe (202). The front end of the body of the heat-insulating barrel (201) is fixedly connected to the exhaust valve pipe (212), and the exhaust valve pipe (212) is connected to the other end of the body of the heat-conducting copper pipe (202).
6. A drying apparatus for processing battery positive electrode additives according to claim 1, characterized in that: The heat preservation barrel (201) is filled with coolant, the gas box (208) is filled with inert gas, the rear end of the upper surface of the heat preservation barrel (201) is provided with a filling groove (4), and a temperature sensor (6) is fixedly connected to one side of the inner wall of the gas box (208).
7. A drying apparatus for processing battery positive electrode additives according to claim 1, characterized in that: The lower surface of the drying drum (204) is fixedly connected to a discharge valve pipe (205), and the lower end of the discharge valve pipe (205) is connected to the bottom plate (101).
8. A drying apparatus for processing battery positive electrode additives according to claim 1, characterized in that: An air inlet valve pipe (210) is fixedly connected to the outer wall of the rear end of the gas box (208), and the air inlet valve pipe (210) is in communication with the gas box (208).