CN221107058U - Wet process lithium ion battery diaphragm white oil extraction box - Google Patents
Wet process lithium ion battery diaphragm white oil extraction box Download PDFInfo
- Publication number
- CN221107058U CN221107058U CN202322941739.XU CN202322941739U CN221107058U CN 221107058 U CN221107058 U CN 221107058U CN 202322941739 U CN202322941739 U CN 202322941739U CN 221107058 U CN221107058 U CN 221107058U
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- China
- Prior art keywords
- extraction
- white oil
- lithium ion
- ion battery
- battery diaphragm
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- 238000000605 extraction Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 43
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims description 23
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000007664 blowing Methods 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a wet method lithium ion battery diaphragm white oil extraction box, which comprises an extraction box body, wherein an extraction inlet is formed in a box cover of the extraction box body, a discharge hole is formed in the bottom of the extraction box body, a filter screen plate is arranged in the extraction box body, a cavity enclosed by the extraction box body is divided into an extraction cavity and an extraction liquid cavity by the filter screen plate, a central hole is formed in the central position of the filter screen plate, filter holes are uniformly distributed in the filter screen plate outside the central hole, a discharge pipe and a return pipe are further arranged on the wet method lithium ion battery diaphragm white oil extraction box, the discharge pipe penetrates through the discharge hole and is communicated with the extraction cavity through the central hole, one end of the return pipe is communicated with the extraction liquid cavity, and the other end of the return pipe is communicated with the extraction liquid cavity. The utility model is beneficial to extracting the white oil again in an extraction mode, reduces the environmental burden and improves the economic benefit.
Description
Technical Field
The utility model relates to the field of lithium ion secondary batteries, and in particular relates to a wet method lithium ion battery diaphragm white oil extraction box.
Background
The Lithium Ion Battery (LIB) has the advantages of high safety performance, small self-discharge degree, long cycle life and the like, and is widely applied to the fields of electric automobiles, 3C digital products, portable electronic equipment, energy storage materials and the like. The lithium battery diaphragm is used as one of important elements of the inner layer of the lithium battery, and the performance of the lithium battery diaphragm determines the interface structure, the internal resistance and the like of the battery, and directly influences the characteristics of the battery, such as capacity, circulation, safety performance and the like. Therefore, the separator having excellent performance plays an important role in improving the overall performance of the battery. The lithium battery diaphragm production method is mainly divided into a wet method and a dry method, and compared with the dry method process, the diaphragm prepared by the wet method process has more excellent thickness uniformity and physical and chemical properties, the aperture size and the porosity are easier to control, and the lithium battery diaphragm occupies most of high-end diaphragm markets.
In the wet diaphragm production, firstly, polyolefin resin and low molecular weight white oil are mixed, melted and extruded, and the thickness and uniformity of the diaphragm are optimized through a biaxial stretching process; and then, using dichloromethane as an extracting agent to extract white oil in the holes of the diaphragm to form the lithium battery diaphragm containing micropores. In the whole process, extrusion and stretching of the diaphragm can generate a certain amount of waste oil-containing waste films. The traditional incineration method is adopted to treat the oily waste film, so that high-toxicity waste gas such as dioxin is extremely easy to generate, the environment is polluted, and the polyolefin film and the white oil cannot be reused.
Disclosure of utility model
Aiming at the problems, the utility model provides the wet-process lithium ion battery diaphragm white oil extraction box, which is beneficial to extracting white oil again in an extraction mode, reduces environmental burden and improves economic benefit.
The utility model provides a wet process lithium ion battery diaphragm white oil extraction case, includes the extraction box, is provided with extraction import on the case lid of extraction box, has seted up the discharge gate on the bottom of the case of extraction box, install the filter screen board in the extraction box, the filter screen board separates the cavity that the extraction box encloses into extraction chamber and extract liquid chamber, the central opening has been seted up to the central point of filter screen board, evenly distributed has the filtration pore on the filter screen board outside the central opening, wet process lithium ion battery diaphragm white oil extraction case still is provided with discharging pipe and back flow, the discharging pipe passes the discharge gate, communicates with the extraction chamber through the central opening, back flow one end and extract liquid chamber intercommunication, the other end and extract liquid chamber intercommunication.
Optionally, an inspection manhole is further arranged on the box cover of the extraction box body.
Optionally, the wet method lithium ion battery diaphragm white oil extraction box further comprises a spray pipe, wherein the spray pipe is positioned at the upper part of the extraction cavity, one end of the spray pipe extends out of the extraction box, and the upper end of the return pipe is connected with the spray pipe.
Optionally, the spray pipe is also connected with a connecting pipe.
Optionally, the wet method lithium ion battery diaphragm white oil extraction box further comprises a stirrer, wherein the stirrer is arranged in the extraction cavity, and a stirring shaft of the stirrer is parallel to the filter screen plate.
Optionally, the stirring vane of the stirrer consists of an inner vane layer and an outer vane layer, wherein the inner vane layer and the outer vane layer are curved surfaces protruding outwards from the axial direction, and the vane area of the outer vane layer is larger than that of the inner vane layer.
Optionally, the wet method lithium ion battery diaphragm white oil extraction box further comprises a spiral conveying device parallel to the stirring shaft, and the spiral conveying device is located between the stirrer and the filter screen plate.
Optionally, the rotating blade of the left half part of the spiral conveying device is a right-handed solid spiral blade, and the rotating blade of the right half part is a left-handed solid spiral blade.
Optionally, the wet method lithium ion battery diaphragm white oil extraction box further comprises a gas blowing pipe, the gas blowing pipe is located in the extraction liquid cavity, and a plurality of rows of gas blowing holes are axially distributed in the gas blowing pipe.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of a structure of a filter screen plate according to the present utility model;
Reference numerals illustrate: 1. the extraction box body, 2, extraction inlet, 3, inspection manhole, 4, discharge gate, 5, filter screen plate, 6, extraction chamber, 7, extract chamber, 8, centre bore, 9, filter aperture, 10, discharging pipe, 11, back flow, 12, shower, 13, connecting pipe, 14, agitator, 15, screw conveyor, 16, blow pipe.
Detailed Description
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, the meaning of "a plurality" is two or more, unless specifically stated otherwise.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The technical scheme of the utility model is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Referring to fig. 1-2, fig. 1 is a schematic diagram of an overall structure of the present utility model, and fig. 2 is a schematic diagram of a structure of a filter screen plate of the present utility model.
The utility model provides a wet process lithium ion battery diaphragm white oil extraction case, including extraction box 1, be provided with extraction import 2 on the case lid of extraction box 1, discharge gate 4 has been seted up on the bottom of the case of extraction box 1, install filter screen plate 5 in the extraction box 1, the cavity that filter screen plate 5 encloses extraction box 1 is divided into extraction chamber 6 and extract chamber 7, centre bore 8 has been seted up to the central point of filter screen plate 5, evenly distributed has filtration pore 9 on the filter screen plate 5 outside the centre bore 8, wet process lithium ion battery diaphragm white oil extraction case still is provided with discharging pipe 10 and back flow 11, discharging pipe 10 passes discharge gate 4, communicate with extraction chamber 6 through centre bore 8, back flow 11 one end and extract chamber 7 intercommunication, the other end and extract chamber 7 intercommunication. Through the arrangement of the extraction cavity 6, the extraction liquid cavity 7, the return pipe 11, the filter screen plate 5 and the discharge pipe 10, the extraction liquid from the extraction cavity returns to the extraction cavity 6 to extract white oil, and the static extraction is changed into the circulating flow extraction, so that the extraction efficiency is improved, and the solid-liquid separation is accelerated.
In one or more embodiments of the present embodiment, for convenience of maintenance, the inspection manhole 3 is further provided on the cover of the extraction tank 1.
In one or more embodiments of the present embodiment, the return pipe 11 is provided with a pump (not shown) to power the return flow.
In one or more specific implementations of this embodiment, in order to further improve the extraction efficiency, the wet-process lithium ion battery diaphragm white oil extraction tank further includes a shower pipe 12, where the shower pipe 12 is located at an upper portion of the extraction cavity 6 and one end of the shower pipe extends out of the extraction tank 1, and an upper end of the return pipe 11 is connected to the shower pipe 12. The spray pipe 12 is provided with a plurality of rows of spray holes along the axial direction.
In one or more embodiments of the present embodiment, for convenience of cleaning, the shower pipe 12 is further connected to a connection pipe 13, and when the extraction chamber 6 and the extraction liquid chamber 7 need to be cleaned, the connection pipe 13 may be connected to a water pipe.
In one or more embodiments of the present embodiment, to further enhance the extraction effect, the wet-process lithium ion battery membrane white oil extraction tank further includes a stirrer 14, where the stirrer 14 is installed in the extraction chamber 6, and a stirring shaft of the stirrer 14 is parallel to the filter screen plate 5.
In one or more embodiments of the present embodiment, in order to further improve the extraction effect, the stirring blades of the stirrer 14 are composed of an inner blade layer and an outer blade layer, the inner blade layer and the outer blade layer are curved surfaces protruding outwards from the axial direction, the blade area of the outer blade layer is larger than that of the inner blade layer, and during operation, the solid broken film forms inner and outer two circles of turbulence in the extraction cavity 6, so that liquid turbulence is caused to diffuse, and full contact extraction is achieved.
In one or more embodiments of the present embodiment, for convenience of discharging, the wet lithium ion battery membrane white oil extraction tank further includes a screw conveyor 15 parallel to the stirring shaft, and the screw conveyor 15 is located between the stirrer 14 and the filter screen plate 5.
In one or more embodiments of the present embodiment, in order to remove the excess material on both corner edges, the rotating blades on the left half of the screw conveyor 15 are right-handed solid screw blades, and the rotating blades on the right half are left-handed solid screw blades. When the material is required to be discharged (waste films), the spiral conveying device 15 is started, and the blades of the spiral conveying device 15 convey the material from the discharging pipes in the middle of the two sides, so that the surplus materials on the two corner sides are removed.
In one or more specific implementations of this embodiment, in order to remove the material adhered to the filter screen plate 5, the wet-process lithium ion battery diaphragm white oil extraction box further includes a gas blowing pipe 16, where the gas blowing pipe 16 is located in the extraction liquid cavity 7, and a plurality of rows of blowing holes are distributed along the axial direction of the gas blowing pipe 16.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (9)
1. The utility model provides a wet process lithium ion battery diaphragm white oil extraction case, includes extraction box (1), is provided with extraction import (2) on the case lid of extraction box (1), has seted up discharge gate (4) on the bottom of the case of extraction box (1), a serial communication port, install filter screen plate (5) in extraction box (1), filter screen plate (5) separate into extraction chamber (6) and extract liquid chamber (7) with the cavity that extraction box (1) encloses, centre bore (8) have been seted up to the central point of filter screen plate (5), evenly distributed has filtration pore (9) on filter screen plate (5) outside centre bore (8), wet process lithium ion battery diaphragm white oil extraction case still is provided with discharging pipe (10) and back flow (11), and discharging pipe (10) pass discharge gate (4) through centre bore (8) and extraction chamber (6) intercommunication, back flow (11) one end and extract liquid chamber (7) intercommunication, the other end and extract liquid chamber (7) intercommunication.
2. The wet method lithium ion battery diaphragm white oil extraction box according to claim 1, wherein an inspection manhole (3) is further arranged on a box cover of the extraction box body (1).
3. The wet-process lithium ion battery diaphragm white oil extraction box according to claim 1, further comprising a spray pipe (12), wherein the spray pipe (12) is positioned at the upper part of the extraction cavity (6) and one end of the spray pipe extends out of the extraction box body (1), and the upper end of the return pipe (11) is connected with the spray pipe (12).
4. A wet process lithium ion battery diaphragm white oil extraction tank according to claim 3, characterized in that the spray pipe (12) is also connected with a connecting pipe (13).
5. Wet process lithium ion battery diaphragm white oil extraction tank according to any one of claims 1-4, characterized in that the wet process lithium ion battery diaphragm white oil extraction tank further comprises a stirrer (14), the stirrer (14) is arranged in the extraction cavity (6), and the stirring shaft of the stirrer (14) is parallel to the filter screen plate (5).
6. The wet process lithium ion battery diaphragm white oil extraction tank of claim 5, wherein the stirring blades of the stirrer (14) consist of an inner blade layer and an outer blade layer, the inner blade layer and the outer blade layer are curved surfaces protruding outwards from the axial direction, and the blade area of the outer blade layer is larger than that of the inner blade layer.
7. Wet process lithium ion battery membrane white oil extraction tank according to any one of claims 1-4, characterized in that the wet process lithium ion battery membrane white oil extraction tank further comprises a screw conveyor (15) parallel to the stirring shaft, the screw conveyor (15) being located between the stirrer (14) and the filter screen plate (5).
8. Wet process lithium ion battery diaphragm white oil extraction tank according to claim 7, characterized in that the rotating blades of the left half part of the screw conveyor (15) are right-hand solid screw blades, and the rotating blades of the right half part are left-hand solid screw blades.
9. The wet process lithium ion battery diaphragm white oil extraction box according to any one of claims 1 to 4, further comprising a gas blowing pipe (16), wherein the gas blowing pipe (16) is located in the extraction liquid cavity (7), and a plurality of rows of blowing holes are axially distributed in the gas blowing pipe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322941739.XU CN221107058U (en) | 2023-11-01 | 2023-11-01 | Wet process lithium ion battery diaphragm white oil extraction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322941739.XU CN221107058U (en) | 2023-11-01 | 2023-11-01 | Wet process lithium ion battery diaphragm white oil extraction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221107058U true CN221107058U (en) | 2024-06-11 |
Family
ID=91365918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322941739.XU Active CN221107058U (en) | 2023-11-01 | 2023-11-01 | Wet process lithium ion battery diaphragm white oil extraction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221107058U (en) |
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2023
- 2023-11-01 CN CN202322941739.XU patent/CN221107058U/en active Active
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