CN214346055U

CN214346055U - Lifting stirring device with detection sensor

Info

Publication number: CN214346055U
Application number: CN202120074584.2U
Authority: CN
Inventors: 郭静; 谷海辰; 邢丽英; 马华; 赵祥彬
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-10-08
Anticipated expiration: 2031-01-12

Abstract

The utility model provides a carry of area detection sensor draws agitating unit, its characterized in that: including the agitator tank, the dispersion oar subassembly, the agitator paddle subassembly, tensile subassembly and No. two tensile subassemblies, agitator tank outside top is equipped with agitator motor and dispersion motor, a stretching device and the setting of agitator paddle subassembly are in the agitator tank, the agitator paddle subassembly is connected to agitator motor's output through tensile subassembly No. one, the dispersion oar subassembly is connected to the output of dispersion motor through tensile subassembly No. two, the agitator tank outer wall is equipped with the controller, agitator motor and the equal signal connection of dispersion motor to controller. The utility model discloses make the thick liquids intensive mixing of jar body top and bottom even, through the concentration of the internal different positions lithium element of detection jar and artifical in good time adjust the rotational speed of lift-draw formula stirring rake or adjust the dispersion rate and the position of lift-draw formula dispersion rake, make the thick liquids keep good stability, and then promote the yields and the battery performance degree of the production of battery.

Description

Lifting stirring device with detection sensor

Technical Field

The utility model belongs to lithium cell homogenate field especially relates to a carry of area detection sensor draws agitating unit.

Background

In the processing step of a lithium ion battery, the homogenization step plays an important role as an important step therein, and the state of the slurry greatly affects the coating. The homogenate process is to fully and uniformly mix the active substance, the conductive agent and the binder, and comprises the mutual contact and dissolution of solid-liquid phase and liquid-liquid phase, the dispersion of the uniformity of the slurry in the homogenate process is very important, the precision of the coating process can be effectively improved by the good uniformly dispersed phase slurry, the dispersion state of the slurry can directly influence the quality of the pole piece, and further the yield of the lithium ion battery production and the performance degree of the battery are influenced.

In the homogenizing process, various components in the slurry are fully mixed through the stirring paddle, the agglomerated slurry is dispersed through the high-speed dispersing paddle, but the slurry at a position far away from the dispersing paddle cannot be effectively dispersed and mixed, so that a dead zone for stirring the slurry is formed; and for some materials with small particle size and high specific surface area, for example, the particle size of lithium iron phosphate is about 200nm, and the conductive agent with high water absorption and high specific surface area can be rapidly agglomerated or settled if the slurry can not be fully mixed and dispersed in a short time, so that a series of problems such as scratches, uneven single-side and double-side surface density and the like occur in the coating process, the yield utilization rate of the pole piece is low, and the consistency of the battery is poor.

CN 208824389U discloses a planetary mixer with ultrasonic vibration rod, which comprises a planetary mechanism, a stirring mechanism and an ultrasonic vibration rod, wherein an ultrasonic generator is arranged at the top of the planetary mechanism, the stirring mechanism and the ultrasonic vibration rod both fix the bottom of the planetary mechanism, and the stirring paddle and the ultrasonic vibration rod stir and disperse ultrasonically in the plane direction, and the ultrasonic vibration can not effectively touch the slurry at the bottom of the tank body, so that the slurry at the bottom of the homogenizing tank body can not be effectively and uniformly mixed and dispersed, the solid content of the slurry is inconsistent and the slurry above the tank body can not be effectively prevented from settling, which seriously affects the coating quality. CN 208526455U discloses a lithium ion battery homogenizing device, which comprises a stirring kettle, a baffle structure and a stirring device, wherein the baffle structure is arranged on the inner wall of the stirring kettle, so that the flow field of slurry in the stirring kettle is changed, and the slurry attached to the baffle structure cannot be fully mixed; agitating unit has only a (mixing) shaft, and the effectual misce bene of ability of thick liquids, (mixing) shaft and dispersion impeller have certain distance apart from agitator tank body bottom, can not play abundant stirring and dispersion to the thick liquids of jar body bottom.

In order to effectively improve the thick liquids because the stirring is insufficient and the thick liquids of the thick liquids that leads to reunite, subside and the tank bottoms top that leads to from this contain the nonconformity admittedly with bottom thick liquids for jar internal thick liquids keep good homodisperse and stability, the utility model provides a take detection sensor to draw agitating unit, the device can effectively avoid the blind spot of homogenate in-process thick liquids stirring for thick liquids obtain good homogeneity dispersion.

The stirring device in the homogenizing equipment applied to the market at present consists of a revolution stirring paddle and a high-speed dispersing paddle, the stirring paddle and the dispersing paddle are fixedly arranged on the equipment, the stirring paddle and the dispersing paddle only rotate in the horizontal plane direction in the stirring process, the length of the stirring paddle is limited, the revolution stirring paddle and the dispersing paddle cannot fully stir the slurry at the bottom of the tank body in the stirring process, the materials at the bottom of the tank body cannot be effectively and uniformly mixed when the conductive agent, the glue solution and the active substance are added step by step, a dead zone which cannot be stirred is formed at the bottom of the tank body, so that the slurry at the bottom of the homogenizing tank body is not uniformly dispersed, the solid content of the slurry in the tank body is inconsistent, the slurry at the upper layer can be settled and agglomerated at the bottom of the tank body in the temporary storage process of short time, and the slurry obtained by homogenizing is not uniformly dispersed and has poor stability, the viscosity difference of the slurry at different positions in the tank body is large.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a carry and draw agitating unit of area detection sensor makes the thick liquids intensive mixing of jar body top and bottom even, surveys jar internal different positions lithium element's concentration and artifical in good time adjustment lift-draw formula stirring rake's rotational speed or suitably adjusts the dispersion rate and the position of lift-draw formula dispersion rake through the detection sensor, makes the thick liquids keep good stability, and then promotes the yields and the battery performance degree of the production of battery.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a lifting stirring device with a detection sensor comprises a stirring tank, a dispersion paddle component, a stirring paddle component, a first stretching component and a second stretching component,

agitator tank outside top is equipped with agitator motor and dispersion motor, and draw gear and stirring rake subassembly set up in the agitator tank, and the stirring rake subassembly is connected to agitator motor's output through a tensile subassembly, and the dispersion rake subassembly is connected to dispersion motor's output through tensile subassembly No. two, and the agitator tank outer wall is equipped with the controller, and agitator motor and the equal signal connection of dispersion motor are to the controller.

Furthermore, the first stretching device and the second stretching device are identical in structure, the first stretching device comprises a first electric push rod and a corrugated pipe, the stirring paddle assembly is connected to the output end of the stirring motor through the first electric push rod, the corrugated pipe is arranged outside the first electric push rod, and the corrugated pipe can change along with the length of the first electric push rod; the second stretching device comprises a second electric push rod and a corrugated pipe, the dispersing paddle assembly is connected to the output end of the dispersing motor through the second electric push rod, the corrugated pipe is arranged outside the second electric push rod, and the corrugated pipe can change along with the length of the second electric push rod; the first electric push rod and the second electric push rod are in signal connection with the controller.

Further, the stirring rake subassembly includes stirring rake blade, a detecting sensor and No. two detecting sensor, and a detecting sensor installs to stirring rake blade bottom one side, and No. two detecting sensor install to stirring rake blade bottom opposite side, and an electric push rod extends to limit length, stirring rake blade bottom not with stirring rake bottom contact, a detecting sensor and No. two equal signal connection of detecting sensor to controller, and the material of stirring rake blade is plastics or steel material.

Furthermore, the dispersing propeller assembly comprises a dispersing propeller body, dispersing propeller blades, a dispersing disc and dispersing blades, the dispersing propeller is sequentially provided with the dispersing propeller blades and the dispersing disc from top to bottom, and the dispersing blades are fixedly installed on the dispersing disc; the material of dispersion oar body, dispersion oar blade, dispersion impeller and dispersion leaf is plastics or steel material, and the dispersion impeller bottom also is equipped with No. two detection sensor.

Furthermore, the number of the dispersing blades is 10-90, and the shape of the dispersing blades is one or the combination of any two of a square sheet shape, a circular sheet shape, a fan shape and a sawtooth shape.

Furthermore, the number of the dispersing blades is 5-60, the shape of the dispersing blades is one or the combination of any two of a square shape, a round shape or a fan shape, and the number of the dispersing disks is 1-20.

Furthermore, the corrugated pipe is made of plastic.

Furthermore, the first detection sensor is an infrared sensor, and the second detection sensor is a displacement sensor.

Further, the stirring speed of the stirring paddle component is 500-3500 rpm; the dispersing linear speed of the dispersing paddle component is 5-22 m/s; the stretching frequency of the first stretching assembly is 2-90 times/min; the stretching frequency of the second stretching component is 2-100 times/min.

Compared with the prior art, a carry and draw agitating unit of area detection sensor have following advantage:

(1) the utility model relates to a carry and draw agitating unit of sensor is surveyed in area has introduced stretching device to stirring rake subassembly and dispersion rake subassembly, can make stirring rake subassembly and dispersion rake subassembly carry out linear motion on the vertical direction, stirs the different liquid layers of thick liquid.

(2) The utility model relates to a carry of area detection sensor draws agitating unit utilizes detection sensor and No. two detection sensors can be real-time to adjust the monitoring of lithium element's concentration in thick liquids and the vertical position of stirring rake subassembly, improves work efficiency.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of a lifting stirring device with a detection sensor according to an embodiment of the present invention;

description of reference numerals:

1. a stirring tank; 2. a dispersing paddle assembly; 21. a dispersion paddle body; 22. dispersing the paddle blades; 23. a dispersion tray; 24. dispersing leaves; 3. a paddle assembly; 31. a paddle blade; 4. a first stretching assembly; 41. a first electric push rod; 5. a second stretching assembly; 51. a second electric push rod; 6. a first detection sensor; 7. and a second detection sensor.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A lifting stirring device with a detection sensor comprises a stirring tank 1, a dispersion paddle component 2, a stirring paddle component 3, a first stretching component 4 and a second stretching component 5,

1 outside top of agitator tank is equipped with agitator motor and dispersion motor, and stretching device and stirring rake subassembly 3 set up in agitator tank 1, and stirring rake subassembly 3 is connected to agitator motor's output through stretching assembly 4 No. one, and dispersion rake subassembly 2 is connected to dispersion motor's output through No. two stretching assemblies 5, and 1 outer wall of agitator tank is equipped with the controller, and agitator motor and the equal signal connection of dispersion motor are to the controller.

The first stretching device and the second stretching device are identical in structure, the first stretching device comprises a first electric push rod 41 and a corrugated pipe, the stirring paddle component 3 is connected to the output end of the stirring motor through the first electric push rod 41, the corrugated pipe is arranged outside the first electric push rod 41, and the corrugated pipe can change along with the length of the first electric push rod 41; the second stretching device comprises a second electric push rod 51 and a corrugated pipe, the dispersing paddle component 2 is connected to the output end of the dispersing motor through the second electric push rod 51, the corrugated pipe is arranged outside the second electric push rod 51 and can change along with the length change of the second electric push rod 51, and the corrugated pipe is used for protecting the first electric push rod 41 and the second electric push rod 51; the first electric push rod 41 and the second electric push rod 51 are both connected to a controller through signals, and the corrugated pipe is made of plastic, so that the corrugated pipe is prevented from reacting with slurry.

The stirring paddle component 3 comprises a stirring paddle blade 31, a first detection sensor and a second detection sensor, the first detection sensor is installed on one side of the bottom of the stirring paddle blade 31, the second detection sensor is installed on the other side of the bottom of the stirring paddle blade 31, the first electric push rod 41 extends to the limit length, the bottom of the stirring paddle blade 31 is not contacted with the bottom of the stirring tank 1, the stirring paddle blade 31 is contacted with the bottom of the stirring tank 1 in the rotation in a telling mode to damage the stirring tank 1, and the stirring speed of the stirring paddle blade 31 is influenced by contact friction between the stirring paddle blade 31 and the stirring tank 1; the first detection sensor and the second detection sensor are both in signal connection with the controller, and the stirring paddle blades 31 are made of plastic or steel materials.

The dispersing propeller component 2 comprises a dispersing propeller body 21, dispersing propeller blades 22, a dispersing disc 23 and dispersing blades 24, the dispersing propeller is sequentially provided with the dispersing propeller blades 22 and the dispersing disc 23 from top to bottom, and the dispersing blades 24 are fixedly installed on the dispersing disc 23; the dispersing paddle body 21, the dispersing paddle blades 22, the dispersing disc 23 and the dispersing blades 24 are made of plastic or steel materials, and the bottom of the dispersing disc is also provided with a second detection sensor.

The number of the dispersing blades 22 is 10-90, and the shape of the dispersing blades 22 is one of square, circle or fan shape or the combination of any two.

The number of the dispersing blades 24 is 5-60, the shape of the dispersing blades 24 is one or the combination of any two of a square shape, a round shape or a fan shape, the dispersing blades 24 are used for increasing the contact area with the slurry, so that the dispersing effect is better, and the number of the dispersing disks 23 is 1-20.

The corrugated pipe is made of a material which does not react with the slurry.

A detection sensor is infrared sensor, a detection sensor is arranged in surveying thick liquids lithium element's concentration, each stirring rake blade 31 all is equipped with a detection sensor No. one, No. two detection sensors are displacement sensor, No. two detection sensors are installed on stirring rake blade 31 and dispersion impeller 23, to being about to touch jar body bottom when, No. two detection sensors detect positional information, give the controller with information transfer, the controller controls tensile subassembly 4 and No. two tensile subassembly 5 stop moving respectively, prevent stirring rake subassembly 3 and dispersion rake subassembly 2 touching tank bottoms.

The stirring speed of the stirring paddle component is 500-; the dispersing linear speed of the dispersing paddle component is 5-22 m/s; the stretching frequency of the first stretching assembly is 2-90 times/min; the stretching frequency of the second stretching component is 2-100 times/min.

Example 1:

the dispersing blades 24 are square, the number of the dispersing blades 24 is 20, and the dispersing blades 24 are fixed on the dispersing disc 23; the number of the dispersing blades 22 is 60, the stretching frequency of the first stretching component 4 is 40 times/min, the stretching frequency of the second stretching component 5 is 40 times/min, the stirring speed of the stirring blade component 3 is 2000rpm, and the dispersing speed of the dispersing blade component 2 is 13 m/s;

example 2:

the dispersing blades 24 are square, the number of the dispersing blades 24 is 35, and the dispersing blades 24 are fixed on the dispersing disc 23; the number of the dispersing paddle blades 22 is 30, the stretching frequency of the first stretching component 4 is 25 times/min, the stretching frequency of the second stretching component 5 is 30 times/min, the stirring speed of the stirring paddle component 3 is 1500rpm, and the dispersing speed of the dispersing paddle component 2 is 12 m/s;

comparative example 1:

the dispersing blades 24 are square, the number of the dispersing blades 24 is 20, and the dispersing blades 24 are fixed on the dispersing disc 23; the number of the dispersing paddle blades 22 is 60, the first stretching assembly 4 and the second detecting sensor 7 are closed, the stirring speed of the stirring paddle assembly 3 is 2200rpm, and the dispersing speed of the dispersing paddle assembly 2 is 12 m/s;

comparative example 2:

the dispersing blades 24 are square, the number of the dispersing blades 24 is 50, and the dispersing blades 24 are fixed on the dispersing disc 23; the number of the dispersing paddle blades 22 is 60, the second stretching assembly 5, the first detection sensor 6 and the second detection sensor 7 are closed, the stirring speed of the stirring paddle assembly 3 is 1800rpm, and the dispersing speed of the dispersing paddle assembly 2 is 12.5 m/s;

the results of homogenization using the pulling and stirring apparatuses with a probe sensor of examples and comparative examples are shown in tables 1 and 2 (setting the solid content standard to 55% + -0.5%; viscosity standard to 5500mPa. s + -400 mPa. s)

TABLE 1

TABLE 2

Can know by above result (mainly be the contrast have tensile subassembly and survey the state of thick liquids when the sensor), the utility model discloses a take stretching device easy operation and each device of surveying the sensor are controlled alone, have effectively improved the stability of homogenate in-process thick liquids for the viscosity of jar body upper portion, middle part and bottom thick liquids with contain basically and keep the uniformity admittedly, and then promoted the yields of battery production.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a carry of area detection sensor draws agitating unit which characterized in that: comprises a stirring tank, a dispersing paddle component, a stirring paddle component, a first stretching component and a second stretching component,

2. A pulling and stirring device with a detecting sensor as set forth in claim 1, wherein: the first stretching device and the second stretching device are identical in structure, the first stretching device comprises a first electric push rod and a corrugated pipe, the stirring paddle assembly is connected to the output end of the stirring motor through the first electric push rod, the corrugated pipe is arranged outside the first electric push rod, and the corrugated pipe can change along with the length of the first electric push rod; the second stretching device comprises a second electric push rod and a corrugated pipe, the dispersing paddle assembly is connected to the output end of the dispersing motor through the second electric push rod, the corrugated pipe is arranged outside the second electric push rod, and the corrugated pipe can change along with the length of the second electric push rod; the first electric push rod and the second electric push rod are in signal connection with the controller.

3. A pulling and stirring device with a detection sensor as set forth in claim 2, wherein: the stirring rake subassembly includes stirring rake blade, a detecting sensor and No. two detecting sensors, and a detecting sensor installs to stirring rake blade bottom one side, and No. two detecting sensors install to stirring rake blade bottom opposite side, and an electric push rod extends to limit length, stirring rake blade bottom not with the contact of agitator tank bottom, and a detecting sensor and No. two equal signal connection of detecting sensor are to the controller, and stirring rake blade's material is plastics or steel material.

4. A pulling and stirring device with a detecting sensor as set forth in claim 1, wherein: the dispersing paddle component comprises a dispersing paddle body, dispersing paddle blades, a dispersing disc and dispersing blades, the dispersing paddles are sequentially provided with the dispersing paddle blades and the dispersing disc from top to bottom, and the dispersing blades are fixedly installed on the dispersing disc; the material of dispersion oar body, dispersion oar blade, dispersion impeller and dispersion leaf is plastics or steel material, and the dispersion impeller bottom also is equipped with No. two detection sensor.

5. A pulling and stirring device with a detection sensor as set forth in claim 4, wherein: the number of the dispersing paddle blades is 10-90, and the shape of the dispersing paddle blades is one or the combination of any two of a square sheet shape, a circular sheet shape, a fan shape or a sawtooth shape.

6. A pulling and stirring device with a detection sensor as set forth in claim 4, wherein: the number of the dispersing blades is 5-60, the shape of the dispersing blades is one or the combination of any two of a square shape, a round shape or a fan shape, and the number of the dispersing disks is 1-20.

7. A pulling and stirring device with a detection sensor as set forth in claim 2, wherein: the corrugated pipe is made of plastic.

8. A pulling and stirring device with a detection sensor as set forth in claim 3, wherein: the first detection sensor is an infrared sensor, and the second detection sensor is a displacement sensor.

9. A pulling and stirring device with a detecting sensor as set forth in claim 1, wherein: the stirring speed of the stirring paddle component is 500-; the dispersing linear speed of the dispersing paddle component is 5-22 m/s; the stretching frequency of the first stretching assembly is 2-90 times/min; the stretching frequency of the second stretching component is 2-100 times/min.