CN217483175U - A oven structure for baking lithium electricity coating pole piece - Google Patents
A oven structure for baking lithium electricity coating pole piece Download PDFInfo
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- CN217483175U CN217483175U CN202221276320.6U CN202221276320U CN217483175U CN 217483175 U CN217483175 U CN 217483175U CN 202221276320 U CN202221276320 U CN 202221276320U CN 217483175 U CN217483175 U CN 217483175U
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- pole piece
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- shell
- air blowing
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- 238000000576 coating method Methods 0.000 title claims abstract description 87
- 239000011248 coating agent Substances 0.000 title claims abstract description 86
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 21
- 230000005611 electricity Effects 0.000 title description 4
- 238000007664 blowing Methods 0.000 claims abstract description 52
- 238000001035 drying Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 description 9
- 230000006872 improvement Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model provides an oven structure for baking lithium battery coating pole pieces, which comprises a shell, wherein a lower hull and an upper hull are respectively arranged in the shell corresponding to the right lower part and the right lower part of the coating pole piece; the upper end of the upper ship body is provided with an upper air inlet pipe connected with a hot air pipe, the lower end of the upper ship body is connected with upper air blowing nozzles which are vertically arranged along the running direction of a coating pole piece at equal intervals, the upper air blowing nozzles are adjacent to each other, one end of each upper air blowing nozzle is connected with a second air exhaust cavity extending upwards, the upper end of each second air exhaust cavity is connected with a third air exhaust cavity, and the third air exhaust cavity is connected with an exhaust pipe capable of extending out of the shell close to the side of the shell. The utility model can effectively improve the heat concentration phenomenon of the coating pole piece in the marginal area during the drying process, and avoid the product defect caused by poor drying consistency; meanwhile, the water concentration in the hot air above the coating pole piece is always kept at a lower level, and the drying speed is greatly improved.
Description
Technical Field
The utility model relates to a lithium cell technical field specifically indicates an oven structure for toasting lithium electricity coating pole piece.
Background
In the lithium battery industry, wet slurry is coated on the upper and lower surfaces of a foil to form a coated pole piece, and the wet coated pole piece needs to be dried by an oven to form a dry coated pole piece. As shown in fig. 1-6, a lower hull 2 and an upper hull 3 are installed in an oven shell 1 in the prior art, and the lower hull 2 is provided with a lower air inlet pipe 2-1 extending out of the shell 1 and connected with a hot air pipe; the upper ship body 3 is provided with an upper air inlet pipe 3-1 which extends out of the shell 1 and is connected with a hot air pipe. The lower hull 2 is horizontally provided with strip-shaped lower blowing nozzles 2-2 which are arranged along the width direction of the coating pole piece 6 at equal intervals close to the side of the coating pole piece 6, and the upper hull 3 is horizontally provided with strip-shaped upper blowing nozzles 3-2 which are arranged along the width direction of the coating pole piece 6 at equal intervals close to the side of the coating pole piece 6. The hot air flow in the upper hull 3 is: upper intake duct 3-1 → upper hull 3 → upper blowing nozzle 3-2 → upper surface of coating pole piece 6 → rebound change flow direction (as shown in the B-B direction cross section of fig. 4 and the C-C direction cross section of fig. 5) → exhaust duct 5.
Hot air blown by the upper air blowing nozzle 3-2 and the lower air blowing nozzle 2-2 respectively contacts the upper surface and the lower surface of the wet coating pole piece 6, the moisture on the surface of the coating pole piece 6 is dried by the hot air, then the hot air flows to two sides of the running direction of the coating pole piece, and after the hot air bypasses the upper ship body 3, the hot air containing the moisture is taken away through the exhaust pipe 5, so that the coating pole piece 6 is dried.
As shown in the partial view D of fig. 6, after the air blown by the upper blowing nozzle 3-2 and the lower blowing nozzle 2-2 is blown onto the surface of the coating pole piece 6, the path is changed, and the air needs to bypass the upper hull 3 from the two sides (left and right in the figure) of the running direction of the coating pole piece 6, and then is exhausted through the exhaust duct 5, so that the air volume on the "left" side and the "right" side of the running direction of the coating pole piece 6 is relatively large, which causes the air volume in the width direction of the coating pole piece 6 to be inconsistent, thereby causing the coating pole piece 6 to be heated unevenly in the width direction during the drying process, which causes the heat concentration in the edge region in the width direction of the coating pole piece 6.
The heat concentration of the edge area of the lithium battery coating pole piece in the width direction in the baking process usually causes that: if the middle area of the coated pole piece is in a moisture drying state, the edge areas at two sides are in an over-drying state, so that the edge areas at two sides of the coated pole piece are cracked and fall powder, and a poor-coated product is caused; and secondly, if the edge areas on the two sides of the coated pole piece are dried to be in an excessive drying state, the middle area is in an undried state, so that the water content in the middle area of the coated pole piece exceeds the standard, and a poor-coated product is caused.
In the prior art, the method for solving the technical problems is generally to improve the structure of the tuyere, for example, baffles are added on two sides of the tuyere to reduce the blowing air volume of the marginal areas on two sides; or the gap of the air outlet in the middle area of the air nozzle is enlarged to form a spindle-shaped air outlet and the like. However, these methods for changing the shape of the tuyere have low versatility (can only be customized for a specific coating size and process), the effect is difficult to guarantee, and the method cannot adapt to the coating process which often needs to be changed; in addition, after the coated pole piece is baked, because the hot air contains high-concentration moisture, the hot air containing high moisture cannot be rapidly discharged out of the oven, so that the drying speed of the coated pole piece is limited, and the coating efficiency is reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides an oven structure for baking a lithium battery coating pole piece, which improves the consistency of the blowing air quantity in the width direction of the coating pole piece and reduces the product defects caused by uneven baking degree; meanwhile, the moisture content in the hot air above the coating pole piece is reduced, and the drying speed is greatly improved.
In order to achieve the above purpose, the present invention provides an oven structure for baking lithium battery coated pole pieces, including a casing through which lithium battery coated pole pieces can pass, wherein a lower hull is arranged in the casing and corresponds to the position right below the coated pole pieces, and an upper hull is arranged in the casing and corresponds to the position right above the coated pole pieces; the lower end of the lower ship body is provided with a lower air inlet pipe which can extend out of the shell and is connected with a hot air pipe, the upper end of the lower ship body is connected with M lower blowing nozzles which are arranged vertically to the running direction of the coating pole piece and can cover the coating pole piece in the width direction at equal intervals, and a roller which is arranged in parallel with the lower blowing nozzles is arranged between the adjacent lower blowing nozzles; it is characterized in that: go up hull upper end and be provided with the last tuber pipe that can stretch out the casing, just be connected with hot-blast tuber pipe, go up hull lower extreme equidistant connection have with coating pole piece traffic direction be perpendicular arrange, and can be with the N of coating pole piece width direction cover blow the mouth on, adjacent go up be provided with between the blow the mouth with blow the mouth parallel arrangement on, and can be with the last blast nozzle that coating pole piece width direction covered, every go up blast nozzle one end all is connected with upwards to extend, and is located the second exhaust chamber of last hull, every second exhaust chamber upper end is connected with jointly and extends, and the part wears out the third exhaust chamber of going up the hull along coating pole piece traffic direction, the third exhaust chamber is close to the exhaust pipe that the casing side is connected with and can stretch out the casing.
Furthermore, every go up the tuyere lower surface and all be provided with banding inlet scoop, the inlet scoop upper end is connected with banding first exhaust chamber, first exhaust chamber one end upper surface is provided with the air exit of being connected with the second exhaust chamber.
Furthermore, a lower cavity connected with the lower ship body is embedded in the lower surface of each lower air blowing nozzle, and the upper end of each lower cavity is connected with lower slits which are inclined towards the left side and the right side and are symmetrically arranged; an upper channel connected with the upper ship body is embedded in the upper surface of each upper air blowing nozzle, and the lower end of the upper channel is connected with upper slits which are inclined towards the left side and the right side and are symmetrically arranged.
Furthermore, the lower air inlet pipe is arranged right below the coating pole piece, and the upper air inlet pipe is arranged right above the coating pole piece.
Furthermore, coating pole pieces are not arranged right below the exhaust pipe.
Furthermore, wet slurry is coated on the upper surface and the lower surface of the coating pole piece.
Furthermore, the temperature of hot air introduced into the lower air inlet pipe and the upper air inlet pipe is 90-130 ℃.
The utility model has the advantages that:
1. the utility model discloses a set up between adjacent upper blower nozzle with upper blower nozzle parallel arrangement, and can be with the upper air outlet nozzle that coating pole piece width direction covers, take away hot-blast that adjacent upper blower nozzle blew off on the spot, in time, make the air-out distribution of coating pole piece width direction and exhaust flow field distribution even, thereby guarantee the uniformity that coating pole piece width direction heated, effectively improve the marginal zone heat concentration phenomenon of coating pole piece in the drying process, thereby avoid because of the drying uniformity is poor, the product defect that leads to;
2. the utility model discloses after the hot-blast air that well upper blowing mouth blew off reachd the moisture on the pole piece upper surface stoving pole piece, rebound, change the flow direction, be located the upper row of parallel arrangement blast nozzle next door and take away rapidly to make the moisture concentration in the hot-blast air of coating pole piece top keep lower level all the time, therefore the drying efficiency of the utility model discloses oven structure has the great improvement than traditional oven, can very big improvement stoving speed, improve production efficiency;
the utility model discloses an oven structure for toasting lithium electricity coating pole piece can effectively improve the marginal zone heat concentration phenomenon of coating pole piece in the stoving process to avoid the product defect that leads to because of the stoving uniformity is poor; meanwhile, the water concentration in the hot air above the coating pole piece is always kept at a lower level, the drying speed is greatly improved, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic perspective view of a prior art oven;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a sectional view taken along line B-B of FIG. 3;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 3;
FIG. 6 is an enlarged view of portion D of FIG. 5;
fig. 7 is a schematic perspective view of the structure of the oven for baking the lithium-ion battery-coated electrode sheet according to the present invention;
FIG. 8 is a schematic perspective view of the throwing away housing of FIG. 7 (without the roller);
FIG. 9 is a right side view of FIG. 7;
FIG. 10 is a cross-sectional view taken along line E-E of FIG. 9;
FIG. 11 is a sectional view taken along line F-F of FIG. 9;
FIG. 12 is a sectional view taken along line G-G of FIG. 11;
fig. 13 is a perspective view of the lower blowing nozzle of fig. 8;
fig. 14 is a schematic cross-sectional view of the lower blowing nozzle of fig. 8;
fig. 15 is a perspective view of the upper blowing nozzle of fig. 8;
fig. 16 is a schematic sectional view of the upper blowing nozzle of fig. 8;
FIG. 17 is a perspective view of the upper discharge nozzle of FIG. 8;
FIG. 18 is a schematic cross-sectional view of the upper discharge nozzle of FIG. 8;
in the figure: the device comprises a shell 1, a lower hull 2, an upper hull 3, a roller 4, an exhaust pipe 5 and a coating pole piece 6;
the lower hull 2 comprises a lower air inlet pipe 2-1 and a lower air blowing nozzle 2-2;
the lower blowing nozzle 2-2 includes: lower cavity 2-21 and lower slit 2-22;
the upper ship body 3 comprises an upper air inlet pipe 3-1, an upper air blowing nozzle 3-2, an upper air exhaust nozzle 3-3, a second air exhaust cavity 3-4 and a third air exhaust cavity 3-5;
the upper blowing nozzle 3-2 comprises: an upper cavity 3-21 and an upper slit 3-22;
the upper exhaust nozzles 3-3 include: 3-31 parts of air suction opening, 3-32 parts of first air exhaust cavity and 3-33 parts of air exhaust opening.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "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 only for convenience of description and 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 invention.
The oven structure for baking the lithium battery coating pole piece comprises a shell 1 which can be penetrated by a lithium battery coating pole piece 6, wherein a lower ship body 2 is arranged in the shell 1 and corresponds to the position right below the coating pole piece 6, and an upper ship body 3 is arranged in the shell 1 and corresponds to the position right above the coating pole piece 6; the lower end of the lower ship body 2 is provided with a lower air inlet pipe 2-1 which can extend out of the shell 1 and is connected with a hot air pipe, the upper end of the lower ship body 2 is connected with M lower air blowing nozzles 2-2 which are arranged vertically to the running direction of the coating pole piece 6 and can cover the coating pole piece 6 in the width direction at equal intervals, and a roller 4 which is arranged in parallel with the lower air blowing nozzles 2-2 is arranged between the adjacent lower air blowing nozzles 2-2. The upper end of the upper ship body 3 is provided with an upper air inlet pipe 3-1 which can extend out of the shell 1 and is connected with a hot air pipe, the lower end of the upper ship body 3 is connected with N upper air blowing nozzles 3-2 which are arranged perpendicularly to the running direction of the coating pole piece 6 and can cover the width direction of the coating pole piece 6 at equal intervals, an upper air blowing nozzle 3-3 which is arranged in parallel with the upper air blowing nozzle 3-2 and can cover the width direction of the coating pole piece 6 is arranged between every two adjacent upper air blowing nozzles 3-2, one end of each upper air blowing nozzle 3-3 is connected with a second air discharging cavity 3-4 which extends upwards and is positioned in the upper ship body 3, the upper end of each second air discharging cavity 3-4 is connected with a third air discharging cavity 3-5 which extends along the running direction of the coating pole piece 6 and partially penetrates out of the upper ship body 3, and the side, close to the shell 1, of the third air discharging cavity 3-5 is connected with an air discharging pipe 5 which can extend out of the shell 1.
The utility model discloses a set up between adjacent upper blower 3-2 with upper blower 3-2 parallel arrangement, and can be with the upper air outlet 3-3 that the upper air outlet 3-2 width direction of coating pole piece covers, take away hot-blast on the spot, in time that adjacent upper air outlet 3-2 blew off, make the air-out distribution and the exhaust flow field distribution of 6 width directions of coating pole piece uniform, thereby guarantee the uniformity of 6 width direction heating of coating pole piece, effectively improve the marginal zone heat concentration phenomenon of coating pole piece 6 in the drying process, thereby avoid because of drying the uniformity difference, the product defect that leads to; after the hot-blast moisture that arrives 6 upper surfaces of coating pole pieces of upper blowing mouth 3-2 blew off simultaneously dries the moisture on it, rebounds, changes the flow direction, is taken away by the upper air-discharge mouth 3-3 that is located the parallel arrangement of 3-2 next door of upper blowing mouth rapidly to make the moisture concentration in the hot-blast of coating pole pieces 6 top remain lower level throughout, therefore the utility model discloses the drying efficiency of oven structure has the improvement by a wide margin than traditional oven, improvement stoving speed that can be very big, improvement production efficiency.
Preferably, the lower surface of each upper air exhaust nozzle 3-3 is provided with a strip-shaped air exhaust opening 3-31, the upper end of each air exhaust opening 3-31 is connected with a strip-shaped first air exhaust cavity 3-32, and the upper surface of one end of each first air exhaust cavity 3-32 is provided with an air exhaust opening 3-33 connected with a second air exhaust cavity 3-4.
Preferably, a lower cavity channel 2-21 connected with the lower hull 2 is embedded in the lower surface of each lower air blowing nozzle 2-2, and lower slits 2-22 which are inclined towards the left side and the right side and are symmetrically arranged are connected to the upper end of the lower cavity channel 2-21; an upper channel 3-21 connected with the upper ship body 3 is embedded in the upper surface of each upper air blowing nozzle 3-2, and the lower end of each upper channel 3-21 is connected with upper slits 3-22 which are inclined towards the left side and the right side and are symmetrically arranged.
Preferably, the lower air inlet pipe 2-1 is arranged right below the coating pole piece 6, and the upper air inlet pipe 3-1 is arranged right above the coating pole piece 6.
Preferably, the coating pole piece 6 is not arranged right below the exhaust duct 5.
Preferably, the upper surface and the lower surface of the coating pole piece 6 are coated with wet slurry.
Preferably, the temperature of hot air introduced into the lower air inlet pipe 2-1 and the upper air inlet pipe 3-1 is 90-130 ℃.
The utility model discloses go up the hot-blast flow direction in hull 3: the upper air inlet pipe 3-1 → the upper hull 3 → the upper air blowing nozzle 3-2 → the upper surface of the coating pole piece 6 → the rebound changes the flow direction → the hot air containing water → the upper air blowing nozzle 3-3 → the second air discharging cavity 3-4 → the third air discharging cavity 3-5 → the air discharging pipe 5, thereby discharging the hot air containing water out of the oven structure.
The utility model can effectively improve the heat concentration phenomenon of the coating pole piece at the marginal area in the drying process, thereby avoiding the product defect caused by poor drying consistency; meanwhile, the water concentration in the hot air above the coating pole piece is always kept at a lower level, the drying speed is greatly improved, the production efficiency is improved, and the coating pole piece has obvious practical value.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all should be included in the protection scope of the present invention.
Claims (7)
1. The drying oven structure for baking the lithium battery coating pole piece comprises a shell (1) which can be penetrated by the lithium battery coating pole piece (6), wherein a lower ship body (2) is arranged in the shell (1) and corresponds to the position right below the coating pole piece (6), and an upper ship body (3) is arranged in the shell (1) and corresponds to the position right above the coating pole piece (6); the lower end of the lower ship body (2) is provided with a lower air inlet pipe (2-1) which can extend out of the shell (1) and is connected with a hot air pipe, the upper end of the lower ship body (2) is connected with M lower air blowing nozzles (2-2) which are arranged vertically to the running direction of the coating pole piece (6) at equal intervals and can cover the coating pole piece (6) in the width direction, and a roller (4) which is arranged in parallel with the lower air blowing nozzles (2-2) is arranged between the adjacent lower air blowing nozzles (2-2); the method is characterized in that: the upper end of the upper ship body (3) is provided with an upper air inlet pipe (3-1) which can extend out of the shell (1) and is connected with a hot air pipe, the lower end of the upper ship body (3) is connected with N upper air blowing nozzles (3-2) which are arranged vertically to the running direction of the coating pole piece (6) and can cover the coating pole piece (6) in the width direction at equal intervals, the upper air blowing nozzles (3-3) which are arranged in parallel to the upper air blowing nozzles (3-2) and can cover the coating pole piece (6) in the width direction are arranged between the adjacent upper air blowing nozzles (3-2), one end of each upper air blowing nozzle (3-3) is connected with a second air exhaust cavity (3-4) which extends upwards and is positioned in the upper ship body (3), and the upper end of each second air exhaust cavity (3-4) is connected with a lower air blowing nozzle which extends in the running direction of the coating pole piece (6) and is connected with a lower air blowing nozzle, And part of the third exhaust cavity (3-5) penetrates out of the upper hull (3), and the side of the third exhaust cavity (3-5) close to the shell (1) is connected with an exhaust pipe (5) capable of extending out of the shell (1).
2. The oven structure for baking lithium battery coated pole pieces according to claim 1, characterized in that: the lower surface of each upper air exhaust nozzle (3-3) is provided with a strip-shaped air exhaust opening (3-31), the upper end of each air exhaust opening (3-31) is connected with a strip-shaped first air exhaust cavity (3-32), and the upper surface of one end of each first air exhaust cavity (3-32) is provided with an air exhaust opening (3-33) connected with the second air exhaust cavity (3-4).
3. The oven structure for baking lithium battery coated pole pieces according to claim 2, characterized in that: a lower cavity channel (2-21) connected with the lower ship body (2) is embedded in the lower surface of each lower air blowing nozzle (2-2), and the upper end of each lower cavity channel (2-21) is connected with lower slits (2-22) which are inclined towards the left side and the right side and are symmetrically arranged; an upper cavity channel (3-21) connected with the upper ship body (3) is embedded in the upper surface of each upper air blowing nozzle (3-2), and the lower end of each upper cavity channel (3-21) is connected with upper slits (3-22) which are inclined towards the left side and the right side and are symmetrically arranged.
4. The oven structure for baking lithium battery coated pole pieces according to claim 1, characterized in that: the lower air inlet pipe (2-1) is arranged right below the coating pole piece (6), and the upper air inlet pipe (3-1) is arranged right above the coating pole piece (6).
5. The oven structure for baking lithium battery coated pole pieces according to claim 4, characterized in that: and a coating pole piece (6) is not arranged under the exhaust pipe (5).
6. The oven structure for baking lithium battery coated pole pieces according to claim 1, characterized in that: the upper surface and the lower surface of the coating pole piece (6) are coated with wet slurry.
7. The oven structure for baking lithium battery coated pole pieces according to claim 1, characterized in that: the temperature of hot air introduced into the lower air inlet pipe (2-1) and the upper air inlet pipe (3-1) is 90-130 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221276320.6U CN217483175U (en) | 2022-05-20 | 2022-05-20 | A oven structure for baking lithium electricity coating pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221276320.6U CN217483175U (en) | 2022-05-20 | 2022-05-20 | A oven structure for baking lithium electricity coating pole piece |
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| Publication Number | Publication Date |
|---|---|
| CN217483175U true CN217483175U (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221276320.6U Active CN217483175U (en) | 2022-05-20 | 2022-05-20 | A oven structure for baking lithium electricity coating pole piece |
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| CN (1) | CN217483175U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116053421A (en) * | 2023-01-18 | 2023-05-02 | 甘肃省民翔新能源科技有限公司 | Pole piece production and processing system of lithium battery |
| CN116441138A (en) * | 2023-04-06 | 2023-07-18 | 兰钧新能源科技有限公司 | Pole piece processing apparatus and electric core production facility |
-
2022
- 2022-05-20 CN CN202221276320.6U patent/CN217483175U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116053421A (en) * | 2023-01-18 | 2023-05-02 | 甘肃省民翔新能源科技有限公司 | Pole piece production and processing system of lithium battery |
| CN116053421B (en) * | 2023-01-18 | 2023-07-07 | 甘肃省民翔新能源科技有限公司 | Pole piece production and processing system of lithium battery |
| CN116441138A (en) * | 2023-04-06 | 2023-07-18 | 兰钧新能源科技有限公司 | Pole piece processing apparatus and electric core production facility |
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