Titanate preparation device for lithium battery

Abstract

The utility model relates to the technical field of lithium battery production, in particular to a titanate preparation device for a lithium battery. Comprising a support, an outer cylinder, an inner cylinder, a rotating shaft, a stepping motor and the like, the outer cylinder is arranged between the two ends of the support, the inner cylinder is arranged in the outer cylinder, a certain space exists between the inner cylinder and the outer cylinder, the stepping motor is installed on the front portion of the support, and the rotating shaft is connected to an output shaft of the stepping motor through a coupler and penetrates through the two ends of the support. The fixed plates at the two ends and the baffles are arranged in the center. A main supporting frame is composed of the support, the outer cylinder and the inner cylinder, compared with a traditional roller way furnace manufacturing environment, the whole roller way furnace manufacturing device is more compact and small, the requirement for the occupied area is remarkably reduced, in addition, the device is provided with machining parts such as the stepping motor, the rotating frame and the heating element, and the machining cost is reduced. The operation of the preparation process of the titanate is complete, and the efficient and accurate titanate preparation and calcination effect can be achieved.

Description

Technical Field

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

[0002] Lithium batteries are secondary batteries consisting of one or more electrochemical cells that store and release electrical energy through chemical reactions. They are known for their high energy density, long life and low self-discharge rate, and are widely used in various electronic devices and electric vehicles.

[0003] Titanate is a very important material commonly used in the production of lithium batteries. It can be used as the negative electrode material for lithium-ion batteries. Titanate is mainly lithium titanate (LiTi2O4). Compared with traditional graphite-based negative electrodes, lithium titanate has higher safety and longer cycle life.

[0004] Most of the preparation methods of lithium titanate are sol-gel method, which is:

[0005] 1. Use titanium alkoxide (such as Ti(OC4H9)4) as the titanium source and dissolve it with a lithium source (such as LiNO3) in an appropriate solvent.

[0006] 2. Add water and acid (such as nitric acid) to promote hydrolysis and condensation reactions to form a gel.

[0007] 3. Dry the gel and then calcine it at high temperature to remove the organic components, finally obtaining lithium titanate.

[0008] In the prior art, the high-temperature calcination process of titanate (lithium titanate) is carried out in a roller furnace. However, the device is too large and occupies too much space, and the material stays in the kiln for too long, resulting in low production efficiency. In addition, there is no guiding or limiting structure during the movement of the roller in the kiln, and the raw material placement frame may be displaced or offset.

[0009] Therefore, in view of the above problems, it is urgent to propose a titanate preparation device for lithium batteries that occupies a small area and is precise and efficient. Utility Model Content

[0010] In order to overcome the shortcomings of the above-mentioned prior art, the technical problem of the present invention is to provide a titanate preparation device for lithium batteries that occupies a small area and is precise and efficient.

[0011] The technical implementation scheme of the utility model is: a titanate preparation device for lithium batteries, including a bracket, an outer cylinder, an inner cylinder, a fixed plate, a baffle, a rotating shaft, a stepper motor, a mounting frame, a rotating frame, a placement frame, a heating element and a connecting frame. An outer cylinder is provided between the two ends of the bracket, an inner cylinder is provided inside the outer cylinder, and a certain space is provided between the inner cylinder and the outer cylinder. Semi-circular fixed plates are provided at both ends of the inner cylinder, and baffles that match the fixed plates are also provided at both ends of the inner cylinder; a stepper motor is installed at the front of the bracket, and the output shaft of the stepper motor A rotating shaft is connected to the upper part through a coupling, and the rotating shaft passes through both ends of the bracket, as well as the center positions of the fixed plates and baffles at both ends. Two cross-shaped mounting brackets are symmetrically arranged on the rotating shaft and located in the inner cylinder. A rotating frame is rotatably arranged between the extended ends of the two mounting brackets. There are four rotating frames, and a placement frame for placing lithium titanate is provided in each of the four rotating frames. A heating element passing through the side wall of the inner cylinder is circumferentially provided on the inner wall of the outer cylinder. The heating element provides heat for calcining lithium titanate. A connecting frame for discharging is connected between the lower positions of the inner cylinder and the outer cylinder.

[0012] Optionally, an electric push rod and a stopper are further included. An electric push rod with a telescopic end passing through its side wall is installed on one side of the outer cylinder, and a stopper is slidingly provided between the outer cylinder and the inner cylinder on one side. The stopper is located on the corresponding side of the installation position of the electric push rod, and the stopper is connected to the telescopic end of the electric push rod, and the stopper is in contact with the rotating frame.

[0013] Optionally, a guide plate, a discharge pipe and a valve are further included. A guide plate is obliquely arranged between the two side walls of the connecting frame. The discharge pipe is connected to the guide plate, and a valve is arranged at the end of the discharge pipe.

[0014] Optionally, pull rings are recessed on the outer sides of the two baffles.

[0015] Optionally, the bottom of the rotating frame is provided with evenly arranged heat holes.

[0016] Optionally, the heating elements are distributed in a circumferential distribution of three quarters, with the remaining one quarter located at the lower side of the abutment plate.

[0017] Compared with the existing technology, the present invention has the following advantages: 1. The present invention is mainly composed of a bracket, an outer tube and an inner tube to form a supporting frame. Compared with the traditional roller furnace preparation environment, the overall appearance is more compact and the floor space requirement is significantly reduced. In addition, the device is equipped with processing components such as a stepper motor, a rotating frame and a heating element, so that the titanate preparation process operation can be complete, and efficient and accurate titanate preparation and calcination effects can be achieved.

[0018] 2. The utility model drives the back plate to move by an electric push rod, so that the back plate can move to a position in contact with the rotating frame, and then contact with it to drive the rotating frame to rotate, so that the prepared titanate can be poured out and the discharge is completed, thereby realizing automatic discharging operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0020] Figure 2 It is a three-dimensional structural diagram of the components such as the bracket, outer cylinder and inner cylinder of the utility model.

[0021] Figure 3 It is a three-dimensional structural diagram of the electric push rod, the abutment plate, the heating element and other components of the utility model.

[0022] Figure 4 It is a three-dimensional structural diagram of the components such as the mounting frame, rotating frame and placement frame of the utility model.

[0023] The meanings of the reference numerals in the figure are: 1: bracket, 2: outer cylinder, 3: inner cylinder, 4: fixing plate, 5: baffle, 6: rotating shaft, 61: stepping motor, 7: mounting frame, 8: rotating frame, 9: placing frame, 10: heating element, 11: connecting frame, 13: electric push rod, 14: abutment plate, 15: guide plate, 16: discharge pipe, 17: valve. DETAILED DESCRIPTION

[0024] First of all, it should be noted that in the various embodiments described, identical components are provided with identical reference numerals or identical component names, wherein the disclosure contained throughout the entire description can be transferred to the same components having the same reference numerals or identical component names. Positional designations selected in the description, such as top, bottom, lateral, etc., also refer to the directly described and illustrated figures and are transferred to the new position in the event of a change in position.

[0025] Example: A device for preparing titanate for lithium battery, such as Figure 1-Figure 4As shown, it includes a bracket 1, an outer cylinder 2, an inner cylinder 3, a fixing plate 4, a baffle 5, a rotating shaft 6, a stepping motor 61, a mounting frame 7, a rotating frame 8, a placement frame 9, a heating element 10 and a connecting frame 11. The bracket 1 is used to support the entire device. An outer cylinder 2 is provided between the front and rear ends of the bracket 1. An inner cylinder 3 is provided inside the outer cylinder 2. The outer cylinder 2 serves as the main outer shell of the device, surrounding the inner cylinder 3 to form a double-layer cylinder. There is a certain space between the inner cylinder 3 and the outer cylinder 2 to accommodate the subsequent installation of components. Semi-circular fixing plates 4 are provided at the front and rear ends of the inner cylinder 3. , and the front and rear ends of the inner cylinder 3 are also clamped with baffles 5 that match the fixed plate 4. The setting of the baffle 5 makes the opening operation of the inner cylinder 3 more convenient. At the same time, the baffle 5 cooperates with the fixed plate 4 on the same side to achieve the effect of closing the inner cylinder 3, thereby ensuring the sealing during operation. The outer sides of the two baffles 5 are recessed with pull rings. The setting of the pull ring makes the opening of the baffle 5 more convenient; a stepping motor 61 is fixedly installed on the front part of the bracket 1, and a rotating shaft 6 is connected to the output shaft of the stepping motor 61 through a coupling. The rotating shaft 6 passes through the front and rear ends of the bracket 1, as well as the middle of the fixed plates 4 and the baffle 5 at the front and rear ends. The center position is such that the rotating shaft 6 crosses the inner cylinder 3. Two cross-shaped mounting brackets 7 are symmetrically arranged on the rotating shaft 6 and located in the inner cylinder 3. A rotating frame 8 is rotatably arranged between the cross extension ends of the two mounting brackets 7, and the bottom of the rotating frame 8 is evenly arranged with heat holes, so that the rotating frame 8 can be heated more evenly during the rotation operation. At the same time, the number of rotating frames 8 is four, and a placement frame 9 for placing lithium titanate is provided in each of the four rotating frames 8. The superposition of the placement frame 9 and the rotating frame 8 makes the placement of lithium titanate more stable, and the inner wall of the outer cylinder 2 is circumferentially provided with a hole that passes through the side wall of the inner cylinder 3. The heating element 10 is distributed in a circumferential manner over three quarters, with the remaining one quarter located at the lower side of the abutment plate 14 to facilitate the falling of lithium titanate during subsequent discharge. The heating element 10 can provide heat to maintain the calcination of lithium titanate, so that the environment in which the lithium titanate is placed is sufficient to achieve the required calcination conditions. A connecting frame 11 for discharging is connected between the lower sides of the inner tube 3 and the outer tube 2. Combined with the above-mentioned components, the device as a whole is smaller and more compact, with a smaller footprint and complete functions, so that the preparation process of titanate can be complete.

[0026] like Figure 1 and Figure 3As shown, it also includes an electric push rod 13 and a resisting plate 14. The left side of the outer cylinder 2 is installed with an electric push rod 13 whose telescopic end passes through its side wall, and a resisting plate 14 is slidingly provided between the outer cylinder 2 and the inner cylinder 3 on one side. The resisting plate 14 is located on the corresponding side of the installation position of the electric push rod 13, and the resisting plate 14 is connected to the telescopic end of the electric push rod 13. The resisting plate 14 is in contact with the rotating frame 8. The resisting plate 14 slides in the left and right directions, and the part of the resisting plate 14 placed between the outer cylinder 2 and the inner cylinder 3 is raised, so that the resisting plate 14 can be limited when moving to the right, thereby ensuring the accuracy of the operation and making the contact distance between the resisting plate 14 and the rotating frame 8 accurately defined.

[0027] like Figure 2 and 3 As shown, it also includes a guide plate 15, a discharge pipe 16 and a valve 17. The guide plate 15 is obliquely arranged between the front and rear side walls of the connecting frame 11. The guide plate 15 is in an inwardly concave and inclined state, which can guide the discharge of lithium titanate. The guide plate 15 is connected to the discharge pipe 16, and the end of the discharge pipe 16 is provided with a valve 17, which can effectively control the discharge operation.

[0028] When preparing titanate, the device is placed on a stable ground, and then the gel is prepared according to the sol-gel method for preparing lithium titanate, and then the formed gel is dried. After the gel is dried, the baffle 5 can be opened and the stepper motor 61 can be started. The stepper motor 61 drives the rotating shaft 6 to rotate, and then the rotating shaft 6 drives the mounting frame 7 to rotate synchronously, so that the rotating frame 8 and the placement frame 9 rotate accordingly. Then the staff shovels the dried gel into the rotating placement frame 9 in turn. After each placement frame 9 is filled with gel, the baffle 5 can be closed, and the heating element 10 can be started. The inner cylinder 3 is heated by the heating element 10, and the stepper motor 61 is driven to rotate and heat the gel to ensure that the gel It can receive more uniform heat, thereby obtaining a better calcination effect. After the gel is calcined to a certain degree, the required lithium titanate (the main component of titanate) will be formed. Then the valve 17 can be opened and the electric push rod 13 can be started. The electric push rod 13 drives the abutment plate 14 on it to operate, so that the abutment plate 14 moves a certain distance to the right. Then the rotating frame 8 rotates, and its bottom contacts the abutment plate 14, and then the abutment plate 14 pushes the rotating frame 8 and the placement frame 9 to rotate. The operation is repeated, so that the lithium titanate placed inside is poured out and falls, and then falls into the connecting frame 11. The fallen lithium titanate enters the valve 17 along the tilt trend of the guide plate 15, and is then discharged by the valve 17, completing the preparation process of lithium titanate.

[0029] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A device for preparing titanate for lithium battery, characterized in that: The invention comprises a bracket (1), an outer cylinder (2), an inner cylinder (3), a fixing plate (4), a baffle (5), a rotating shaft (6), a stepping motor (61), a mounting frame (7), a rotating frame (8), a placement frame (9), a heating element (10) and a connecting frame (11). An outer cylinder (2) is provided between the two ends of the bracket (1), an inner cylinder (3) is provided inside the outer cylinder (2), a certain space exists between the inner cylinder (3) and the outer cylinder (2), a semi-circular fixing plate (4) is provided at both ends of the inner cylinder (3), and baffles (5) that match the fixing plate (4) are also provided at both ends of the inner cylinder (3); a stepping motor (61) is installed at the front of the bracket (1), and the output shaft of the stepping motor (61) is connected to the outer cylinder (2) by a coupling. There is a rotating shaft (6), which passes through the two ends of the bracket (1) and the center positions of the fixing plates (4) and the baffles (5) at the two ends. Two cross-shaped mounting brackets (7) are symmetrically arranged on the rotating shaft (6) and located in the inner cylinder (3). A rotating frame (8) is rotatably arranged between the extended ends of the two mounting brackets (7). The number of the rotating frames (8) is four. A placement frame (9) for placing lithium titanate is arranged inside the four rotating frames (8). A heating element (10) passing through the side wall of the inner cylinder (3) is circumferentially arranged on the inner wall of the outer cylinder (2). The heating element (10) provides heat for calcining lithium titanate. A connecting frame (11) for discharging is connected between the lower sides of the inner cylinder (3) and the outer cylinder (2).

2. The device for preparing titanate for lithium battery according to claim 1, characterized in that: The invention also includes an electric push rod (13) and a butt plate (14). One side of the outer cylinder (2) is installed with an electric push rod (13) whose telescopic end passes through its side wall, and a butt plate (14) is slidably provided between the outer cylinder (2) and the inner cylinder (3) on one side. The butt plate (14) is located on the corresponding side of the installation position of the electric push rod (13), and the butt plate (14) is connected to the telescopic end of the electric push rod (13). The butt plate (14) contacts and cooperates with the rotating frame (8).

3. The device for preparing titanate for lithium battery according to claim 2, characterized in that: The invention also includes a guide plate (15), a discharge pipe (16) and a valve (17). The guide plate (15) is obliquely arranged between the two side walls of the communication frame (11). The discharge pipe (16) is connected to the guide plate (15). The valve (17) is arranged at the end of the discharge pipe (16).

4. The device for preparing titanate for lithium battery according to claim 3, characterized in that: Pull rings are recessed and provided on the outer sides of the two baffles (5).

5. The device for preparing titanate for lithium battery according to claim 4, characterized in that: The bottom of the rotating frame (8) is provided with heat-through holes arranged evenly.

6. The device for preparing titanate for lithium battery according to claim 5, characterized in that: The heating elements (10) are arranged in a three-quarter circumferential distributed layout, with the remaining one-quarter portion located at the lower side of the abutment plate (14).

Images