CN212954322U

CN212954322U - Device for preparing carbon-silicon coated lithium iron phosphate anode material

Info

Publication number: CN212954322U
Application number: CN202020756661.8U
Authority: CN
Inventors: 孙勇
Original assignee: Shenzhen Mottcell New Energy Technology Co ltd
Current assignee: Shenzhen Mottcell New Energy Technology Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-04-13
Anticipated expiration: 2030-05-09

Abstract

The utility model relates to the technical field of batteries, in particular to a device for preparing a carbon-silicon coated lithium iron phosphate anode material, which comprises a side box body, a base and a workbench, and also comprises a grinding mechanism and a locking mechanism on the workbench, wherein a first driving mechanism for driving the grinding mechanism to rotate is arranged in the base; the grinding mechanism comprises a fixed frame and a grinding tank, a plurality of grinding balls are arranged in the grinding tank, and the top of the grinding tank is in threaded connection with a cover body; the locking mechanism comprises an auxiliary frame and a twisting rod, the twisting rod is connected with a compression screw, and the auxiliary frame and the twisting rod are connected in a vertical sliding manner; the other end of the compression screw is coaxially connected with the cover body, and the top of the fixed frame is provided with a locking screw which is in threaded connection with the compression screw; the working table is provided with a dust cover, the top of the dust cover is provided with a top cover, one side of the top cover is hinged on the side box body, and the top cover is provided with a second driving mechanism used for driving the auxiliary frame to rotate. The scheme solves the health threat to workers caused by the flying of a large amount of dust during manual cover opening.

Description

Device for preparing carbon-silicon coated lithium iron phosphate anode material

Technical Field

The utility model relates to a battery technology field, concretely relates to a device that is used for carbon silicon coated lithium iron phosphate cathode material to prepare.

Background

As a novel chemical power supply, the lithium ion battery has become the key point of development of countries in the world in the field of new energy materials at present due to high output voltage, high specific energy, long cycle life, small self-discharge, safety, no memory effect and environmental friendliness. The carbon-silicon coated lithium iron phosphate positive active material is always a key factor influencing the performance of the lithium ion battery. Due to the shortage of lithium cobaltate (LiCoO2) resources, the price is high, and particularly the safety is poor, so that the application of the lithium cobaltate in the field of power batteries is limited. Because of the abundant raw materials and good safety, lithium iron phosphate has been widely considered as the first choice of the cathode material of the next generation of lithium ion power battery.

When the carbon-silicon coated lithium iron phosphate cathode material is prepared, lithium iron phosphate is placed in a lithium silicate aqueous solution with the mass concentration of 25-30% to be soaked for 1-3h and fully stirred, the water in the solution is evaporated, the soaked lithium iron phosphate is roasted for 2-5h at the temperature of 400-450 ℃, the porous silicon/carbon composite material with the content of 3-7 wt% (3-7 wt%) relative to the content of the lithium iron phosphate is added into the roasted lithium iron phosphate powder, the porous silicon/carbon composite material is heated in a tubular furnace after being uniformly mixed by ball milling, the heating temperature is 1200-1500 ℃, the heating time is 1-2h, and the carbon-silicon coated lithium iron phosphate composite material can be obtained after cooling.

When the composite material is ball-milled and mixed, a ball mill is generally used for milling and mixing. However, the traditional ball mill can generate a large amount of dust and harmful gas in the grinding process at present, the cover of the ball mill is directly opened, the dust can seriously affect the working environment of workers, and the health of the workers can be seriously affected after the ball mill works in the environment for a long time. In addition, the manual cover opening mode is time-consuming and labor-consuming, and the working efficiency is lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device that is used for carbon silicon coated lithium iron phosphate cathode material to prepare, solved because of a large amount of dusts fly upward when artifical uncapping, and threaten the health that the workman caused.

In order to solve the technical problem, the utility model discloses a basic scheme as follows:

a device for preparing a carbon-silicon coated lithium iron phosphate positive electrode material comprises a side box body, a base, a workbench arranged on the base, a grinding mechanism and a locking mechanism arranged on the workbench, wherein a first driving mechanism for driving the grinding mechanism to rotate is arranged in the base; the grinding mechanism comprises a fixed frame and a grinding tank coaxially and fixedly connected in the fixed frame, and a plurality of grinding balls are arranged in the grinding tank; the top of the grinding tank is in threaded connection with a cover body for opening and closing the grinding tank;

the locking mechanism comprises an auxiliary frame and a twisting rod which are sequentially arranged from top to bottom, the middle part of the twisting rod is vertically and fixedly connected with a compression screw rod, and the side wall of the auxiliary frame is provided with a groove which is in up-and-down sliding connection with the twisting rod; the other end of the compression screw is coaxially and fixedly connected with the cover body, and the top of the fixed frame is provided with a locking screw in threaded connection with the compression screw; but be equipped with the open closed dust cover with whole workstation shade on the workstation, the dust cover top is equipped with the top cap that is used for the switching dust cover, and top cap one side articulates on the side box, and the other end is the free side, and is equipped with on the top cap to be used for driving auxiliary frame pivoted second actuating mechanism.

Drive the grinding pot through a actuating mechanism and rotate, the grinding ball in the grinding pot is also driven and rotates together, under the effect of centrifugal force, strikes each other between grinding ball and the grinding ball, reaches the effect of abundant grinding.

The auxiliary frame is driven to rotate through the second driving mechanism, and the screwing rod which is in vertical sliding connection with the auxiliary frame is also driven to rotate by the auxiliary frame. The twisting rod rotates to drive the compression screw to rotate, and the compression screw drives the cover body to rotate. In the process, the cover body is connected with the grinding tank through threads, so that the cover body can be opened upwards in the process that the cover body is driven to rotate by the compression screw. Twist and move the pole this moment and upwards slide in the recess of auxiliary frame, separate with the grinding pot completely until the lid, and then reach the effect of automatic uncapping, need not the manual work and operate. Because locking screw and compression screw threaded connection, so in the in-process of uncapping, can play the effect of locking, avoid the lid to have the way to open completely.

Through the dust cover that covers whole workstation all, can make grinding pot when uncapping, the dust subsides in the dust cover earlier. One side of the top cover is hinged on the side box body, and the top cover can be opened by lifting the free side.

Furthermore, a first power source is installed in the side box body, the first power source is connected with a driving belt wheel, a first driving mechanism comprises a driven belt wheel in belt transmission with the driving belt wheel, the bottom of the workbench is rotatably connected with a rotating disc, the rotating disc is coaxially connected with a driven wheel, a fixed gear which is coaxially rotatably connected with the rotating disc is arranged in the rotating disc, the fixed gear is meshed with a transition gear, the transition gear is meshed with a planetary gear which is coaxially connected with the bottom of the grinding tank, and the grinding tank is rotatably connected with the rotating disc.

The driven belt wheel is driven to rotate through the driving belt wheel, so that the rotating disc is driven to rotate, the rotating disc drives the grinding tank to revolve around the axis of the rotating disc, and grinding balls in the grinding tank generate centrifugal force to impact and grind each other.

The rotating disc is coaxially and rotatably connected with a fixed gear, the fixed gear drives a transition gear, and the transition gear drives a planetary gear to rotate. Because planetary gear and the bottom coaxial coupling of grinding jar, planetary gear rotates and can drive the grinding jar promptly and carry out the rotation, and the grinding ball strikes each other under the centrifugal force that the rotation produced, has strengthened the dynamics of grinding, grinds more exquisitely and more fast.

Furthermore, the second driving mechanism comprises a second power source arranged on the top cover, the second power source is connected with a driving gear, and the driving gear is meshed with a driven gear coaxially connected with the auxiliary frame.

The driven gear is driven through the driving gear, and then the auxiliary frame is driven to rotate, the structure is simple, and transmission is stable.

Furthermore, four grinding mechanisms and four locking mechanisms are arranged, and the grinding mechanisms and the locking mechanisms are installed in a one-to-one correspondence mode.

The four grinding mechanisms and the four locking mechanisms which are correspondingly matched and installed are arranged, so that the effect of repeatedly grinding the same material and completely consistent in effect can be achieved, and the working efficiency is also improved.

Further, a telescopic cylinder is arranged between the top cover and the side box body, one end of a cylinder body of the telescopic cylinder is hinged to the upper surface of the side box body, and one end of a cylinder rod of the telescopic cylinder is hinged to the top cover.

Through telescopic cylinder's shrink, the drive top cap upwards rotates around its articulated department with the side box, reaches the automatic effect of opening the dust cover, and telescopic cylinder's extension then plays the automatic effect of covering the dust cover, and telescopic cylinder action is stable, the dust cover that opens and shuts that can be stable.

Furthermore, an exhaust fan which exhausts air from the inside of the top cover to the outside is arranged on the top cover.

The dust in the dust cover can be taken out by the exhaust fan, and then collected, so that the dust can be further prevented from being sucked by workers, and the healthy working environment of the workers can be guaranteed.

Drawings

Fig. 1 is a front sectional view of an embodiment of an apparatus for preparing a carbon-silicon coated lithium iron phosphate cathode material according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a view from the direction a in fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the grinding machine comprises a side box body 1, a motor 2, a driving belt wheel 3, a base 4, a belt 5, a driven belt wheel 6, a planetary gear 7, a fixed gear 8, a transition gear 9, a workbench 10, a rotating disc 11, grinding balls 12, a fixed frame 13, a grinding tank 14, a cover body 15, a locking screw 16, a pressing screw 17, an exhaust fan 18, a screwing rod 19, a driven gear 20, a driving gear 21, a stepping motor 22, an auxiliary frame 23, a shaft lever 24, an air cylinder 25, a cylinder rod 26, a top cover 27 and a groove 28.

The embodiments are substantially as shown in figures 1 to 3 of the accompanying drawings:

the utility model provides a device that is used for carbon silicon coated lithium iron phosphate cathode material to prepare, includes base 4, side box 1 and workstation 10, and side box 1 is in the 4 left sides of base, and workstation 10 sets up with side box 1 is adjacent. A motor 2 is arranged in the side box body 1, and an output shaft below the motor 2 is coaxially connected with a driving belt wheel 3.

The middle part of workstation 10 is inlayed and is changeed rolling disc 11, rotates between the circumference of rolling disc 11 and the workstation 10 and is connected. The bottom of the rotating disc 11 is coaxially connected with a driven belt wheel 6, and the driven belt wheel 6 is connected with the driving belt wheel 3 through a belt 5. The inside coaxial rotation of rolling disc 11 is connected with the tight pulley, and the tight pulley fixed connection is on the base.

Four grinding mechanisms are uniformly distributed on the turntable, and each grinding mechanism is provided with a locking mechanism. The grinding mechanism comprises a fixed frame 13 and a grinding tank 14 which is coaxially and fixedly connected with the fixed frame 13, and a plurality of grinding balls 12 are placed in the grinding tank 14. The upper side of grinding jar 14 is equipped with lid 15, and the week side of lid 15 is equipped with the external screw thread, and the upside inner wall of grinding jar 14 is equipped with the internal thread with external screw thread complex, and lid 15 carries out threaded connection through the cooperation of internal thread and external screw thread with grinding jar 14. The upper side of the cover body 15 is coaxially welded with a compression screw 17, and the circumferential direction of the compression screw 17 is provided with an external thread with the same pitch as that of the cover body 15.

The upper side of the fixed frame 13 is provided with a locking screw 16 horizontally arranged, the middle part of the locking screw 16 is provided with an internal thread hole matched with the external thread on the compression screw 17, and the locking screw 16 is in threaded connection with the compression screw 17 through the matching of the internal thread and the external thread. The fixed frame 13 is rotatably connected with the rotating disc 11, the bottom of the fixed frame 13 is coaxially connected with the planetary gear 7 positioned in the rotating disc 11, and the transition gear 9 is meshed between the planetary gear 7 and the fixed gear 8.

The locking mechanism comprises an auxiliary frame 23 and a twisting rod 19 which are sequentially arranged from top to bottom, as shown in fig. 2, four grooves 28 are respectively arranged on the upper, lower, left and right sides of the auxiliary frame 23, and as can be seen from fig. 1, the four grooves 28 are vertically arranged in the circumferential direction of the auxiliary frame 23. The screwing rod 19 is in a cross shape, and each end of the screwing rod 19 is respectively inserted into a corresponding groove 28 of the auxiliary frame 23, and the grooves 28 can allow the screwing rod 19 to slide up and down as shown in fig. 1.

The workbench 10 is provided with a dust cover covering the whole workbench 10, the top of the dust cover is a top cover 27, the left side of the top cover 27 is hinged on the right side of the side box body 1, and the right side of the top cover 27 is a free side. A suction fan 18 is mounted to the right side of the top cover 27, the suction fan 18 being connected to a dust collector located outside the dust cover. A telescopic cylinder 25 is arranged between the side box body 1 and the top cover 27, one end of the cylinder body of the telescopic cylinder 25 is jointed on the upper surface of the side box body 1, one end of the cylinder rod 26 is jointed on the upper surface of the left side of the top cover 27, and two groups of telescopic cylinders 25 which are arranged in parallel are adopted in the embodiment.

The top cover 27 is provided with a stepping motor 22 (model: UPH5913-B), the stepping motor 22 is connected with a driving gear 21, and the driving gear 21 is coaxially arranged with the rotating disk 11. The upper side of the auxiliary frame 23 is welded with a shaft lever 24, the upper end of the shaft lever 24 is embedded into the top cover 27 and is rotatably connected with the top cover 27, and the driven gear 20 meshed with the driving gear 21 is coaxially connected above the auxiliary frame 23.

The specific implementation process is as follows:

the motor 2 is started to rotate the driving belt wheel 3, the driving belt wheel 3 drives the driven belt wheel 6 to rotate, and the driven belt wheel 6 drives the rotating disc 11 to rotate. At this time, the grinding pot 14 rotates along with the rotating disc 11, the grinding balls 12 in the grinding pot 14 are also driven to rotate to generate centrifugal force, and the grinding balls 12 collide with each other to achieve the grinding effect. Since the fixed gear 8 is meshed with the transition gear 9, and the transition gear 9 is rotatably connected with the rotating disc 11, the transition gear 9 can also rotate during the process that the transition gear 9 is driven by the rotating disc 11 to revolve around the fixed gear 8.

And because the transition gear 9 is meshed with the planetary gear 7, the transition gear 9 drives the planetary gear 7 to rotate while rotating, so that the grinding tank 14 coaxially connected with the planetary gear 7 rotates, the grinding balls 12 in the grinding tank 14 generate centrifugal force due to the rotation of the grinding tank 14, the grinding balls 12 are impacted with each other, the grinding force is enhanced, and the grinding is more delicate and faster.

After the grinding is finished, the motor 2 is turned off, the stepping motor 22 is turned on, the stepping motor 22 drives the driving gear 21 to rotate, and the driving gear 21 drives the driven gear 20 to rotate. The driven gear 20 rotates to rotate the auxiliary frame 23, and the screw rod 19 rotates when the auxiliary frame 23 rotates because the screw rod 19 is inserted into the groove 28 of the auxiliary frame 23. The tightening rod 19 is then screwed to rotate the tightening screw 17, and the tightening screw 17 rotates in the forward direction to rotate the cover 15. The cover 15 is screwed to the grinding bowl 14, so that when the cover 15 is rotated, it moves upwards, the screw 19 moves upwards in the recess 28 until the cover 15 abuts against the top of the fixed frame 13 and the grinding bowl 14 is completely opened. The compression screw 17 is in threaded connection with the locking screw 16 on the fixing frame 13, so that after the cover 15 is completely separated from the grinding tank 14, the compression screw 17 can be clamped by the locking screw 16 and cannot slide downwards. Do not need the manual work to uncap, avoid when artifical uncap that a large amount of dust flies upward and threatens the health that the workman caused to practice thrift manpower and time cost.

After the grinding pot 14 is opened, the suction fan 18 is turned on to suck out the dust inside the dust cover and collect it in an external dust collector. When the dust cover is arranged on the workbench 10, the telescopic cylinder 25 is in an extending state, after dust in the dust cover is extracted, the cylinder 25 is started to enable the cylinder rod 26 to contract, the top cover 27 is driven to upwards rotate around the hinged position of the top cover and the side box body 1, the effect of automatically opening the dust cover is achieved, otherwise, the extension of the telescopic cylinder 25 plays a role of automatically covering the dust cover, the telescopic cylinder 25 is stable in action, the dust cover can be stably opened and closed, and manpower and time are saved. When the dust cover is opened, can take out inside material, the inside dust of dust cover has been taken out this moment, and the workman operates this moment, then can not inhale and inhale too much dust, has ensured workman operational environment's clean degree.

The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims should be determined by the content of the claims, and the description of the specific embodiments and the like in the specification should be used for explaining the content of the claims.

Claims

1. The utility model provides a device that is used for carbon silicon coated lithium iron phosphate cathode material to prepare, includes side box, base and locates the workstation on the base, its characterized in that: the grinding mechanism and the locking mechanism are arranged on the workbench, and a first driving mechanism for driving the grinding mechanism to rotate is arranged in the base; the grinding mechanism comprises a fixed frame and a grinding tank coaxially and fixedly connected in the fixed frame, and a plurality of grinding balls are arranged in the grinding tank; the top of the grinding tank is in threaded connection with a cover body for opening and closing the grinding tank;

the locking mechanism comprises an auxiliary frame and a twisting rod which are sequentially arranged from top to bottom, the middle part of the twisting rod is vertically and fixedly connected with a compression screw rod, and the side wall of the auxiliary frame is provided with a groove which is in up-and-down sliding connection with the twisting rod; the other end of the compression screw is coaxially and fixedly connected with the cover body, and the top of the fixed frame is provided with a locking screw in threaded connection with the compression screw; the workbench is provided with a openable and closable dust cover covering the whole workbench, the top of the dust cover is provided with a top cover for opening and closing the dust cover, one side of the top cover is hinged on the side box body, the other end of the top cover is a free side, and the top cover is provided with a second driving mechanism for driving the auxiliary frame to rotate.

2. The apparatus of claim 1, wherein the apparatus comprises: install first power supply in the side box, first power supply is connected with driving pulley, first actuating mechanism includes and takes driven pulley with driving pulley belt drive, the bottom of workstation rotates and is connected with the rolling disc, rolling disc and follow driving pulley coaxial coupling, be equipped with the fixed gear who is connected with rolling disc coaxial coupling in the rolling disc, the fixed gear meshing has transition gear, transition gear meshing have with the bottom coaxial coupling's of grinding jar planetary gear, the grinding jar rotates with the rolling disc to be connected.

3. The apparatus of claim 1, wherein the apparatus comprises: the second driving mechanism comprises a second power source installed on the top cover, the second power source is connected with a driving gear, and the driving gear is meshed with a driven gear coaxially connected with the auxiliary frame.

4. The apparatus of claim 2, wherein the apparatus comprises: four grinding mechanisms and four locking mechanisms are arranged, and the grinding mechanisms and the locking mechanisms are installed in a one-to-one correspondence mode.

5. The apparatus of claim 1, wherein the apparatus comprises: a telescopic cylinder is arranged between the top cover and the side box body, one end of a cylinder body of the telescopic cylinder is hinged to the upper surface of the side box body, and one end of a cylinder rod of the telescopic cylinder is hinged to the top cover.

6. The apparatus of claim 1, wherein the apparatus comprises: and an exhaust fan for exhausting air from the inside of the top cover to the outside is arranged on the top cover.