CN109967788A - Energy storage pole plate cutter location calibrating installation and its calibration method - Google Patents
Energy storage pole plate cutter location calibrating installation and its calibration method Download PDFInfo
- Publication number
- CN109967788A CN109967788A CN201910264844.XA CN201910264844A CN109967788A CN 109967788 A CN109967788 A CN 109967788A CN 201910264844 A CN201910264844 A CN 201910264844A CN 109967788 A CN109967788 A CN 109967788A
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- Prior art keywords
- pole plate
- spacing
- calibrating installation
- energy storage
- positioning
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- 238000009434 installation Methods 0.000 title claims abstract description 24
- 238000004146 energy storage Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012634 fragment Substances 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims description 8
- 230000001186 cumulative effect Effects 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D19/00—Shearing machines or shearing devices cutting by rotary discs
- B23D19/04—Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs
- B23D19/06—Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs with several spaced pairs of shearing discs working simultaneously, e.g. for trimming or making strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
- B23D35/005—Adjusting the position of the cutting members
- B23D35/007—Adjusting the position of the cutting members for circular cutting members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The present invention relates to accumulator plate fragment fields, disclose a kind of energy storage pole plate cutter location calibrating installation and its calibration method, three locating pieces (1) are equidistantly set on positioning screw (2), each locating piece (1) is fixedly clamped on the positioning screw (2) by adjusting nut (3) screw thread of two sides respectively, it is offered the locating slot vertical with the positioning screw (2) (4) on each locating piece (1), and each locating slot (4) is respectively positioned on the same side of the positioning screw (2)；Side positioning head (5) are installed respectively at the both ends of the positioning screw (2).Compared with prior art, after being calibrated using the present apparatus to wafer separator, the spacing between the cutter two-by-two of wafer separator is more accurate, cumulative errors will not be caused because of the micro-deformation of trial cut pole plate itself, pole plate fragment qualification rate is substantially increased, trial cut cost is reduced, calibration accuracy is accurate.
Description
Technical field
The present invention relates to accumulator plate fragment field, in particular to a kind of energy storage pole plate cutter location calibrating installation and its
Calibration method.
Background technique
In accumulator pole board manufacturing process, the pole plate to link together two-by-two needs to be cut by pole plate cutter device
Cut fragment, the structure of wafer separator is as shown in Figure 1, three pieces cutter 10 is equidistantly set on positioning rotating shaft 11, and 11 turns of positioning rotating shaft
On the rack, the two sides of each cutter 10 clamp positioning, both ends by the collet 12 being set on positioning rotating shaft 11 respectively for dynamic connection
12 two sides of collet pass through locking nut 13 again and be threadedly coupled with positioning rotating shaft 11 and be locked；It is arranged at 11 both ends of positioning rotating shaft
Be used for transmission the transmission track 14 of pole plate 8 to be cut, the relative inner of two lateral conveyor tracks 14 be additionally provided with for place to
The supporting plate 15 for cutting 8 two sides of pole plate auxiliary hangers 9, also sets up between cutter 10 two-by-two, above positioning rotating shaft 11 for transmitting
The conveyer belt 16 of pole plate after fragment.In cutting, the auxiliary hangers 9 of the two sides pole plate 8(such as Fig. 2 to be cut) is placed into first
On supporting plate 15 (pole plate 8 to be cut can also be located at the top of conveyer belt 16 at this time), then two lateral conveyor track 14 of synchronous averaging, transmission
Pole plate 8 to be cut is transmitted to each 10 top of cutter by two sides supporting plate 15 by band 16 and positioning rotating shaft 11, two lateral conveyor tracks 14,
Cutter 10 follows and pole plate 8 to be cut is cut fragment in predeterminated position while 11 high speed rotation of positioning rotating shaft, the pole after fragment
Plate then falls on conveyer belt 16 and is transferred to subsequent processing.
For various sizes of pole plate 8 to be cut, require again before booting to the spacing between cutter 10 two-by-two every time
Position is adjusted, trial cut pole plate again after adjustment, judges whether pole plate cutting size reaches requirement, since pole plate is in production process
In inherently have micro-deformation, with pole plate with reference to adjustment 10 position of cutter will cause cumulative errors, so, pole plate fragment
Qualification rate is difficult to be promoted, and causes cost to waste with pole plate trial cut, and debugging cutter 10 is not only time-consuming and laborious, and accuracy
Difference.
Summary of the invention
Goal of the invention: aiming at the problems existing in the prior art, the present invention provides a kind of energy storage pole plate cutter location calibration
Device and its calibration method, this calibrating installation in advance can carry out the cutter spacing of wafer separator according to the size of pole plate to be cut
Calibration guarantees the accurate of pole plate cutting size, avoids the appearance of cumulative errors, promote pole plate fragment qualification rate, reduction is cut into
This.
Technical solution: the present invention provides a kind of energy storage pole plate cutter location calibrating installation, three locating pieces equidistantly cover
It is located on positioning screw, the adjusting nut screw thread that each locating piece passes through two sides respectively is fixedly clamped in the positioning screw
On, offer the locating slot vertical with the positioning screw on each locating piece, and each locating slot be respectively positioned on it is described
The same side of positioning screw；Side positioning head is installed respectively at the both ends of the positioning screw.
Further, it is also arranged with positioning intermediate plate respectively between each locating piece and each adjusting nut.Positioning
The setting of intermediate plate enables adjusting nut that more efficiently locating piece is fixed on positioning screw.
Further, each side positioning head has interior adjusting screw thread, each side positioning head and the positioning screw
Both ends pass through the interior adjusting screw thread connection.By it is interior adjust screw thread setting so that the end of both ends side positioning head it
Between spacing it is adjustable so that when being calibrated to wafer separator, the two sides auxiliary hangers of pole plate to be cut and two sides are passed
The spacing between track is sent also to be able to carry out calibration, more comprehensively, precision is higher for calibration function.
Further, be further fixed on the positioning screw with the comparable graduated scale of its length, and the graduated scale with
Each locating slot is located at the positioning screw two sides.Graduated scale is arranged so that in the size tune according to pole plate to be cut
It when saving adjusting nut, can be adjusted, adjust more convenient by referring to the size of graduated scale.
The present invention also provides a kind of energy storage pole plate cutter location calibrating installations to the calibration method of wafer separator, and feature exists
In, comprising the following steps: S1: according to the size of pole plate to be cut, each locating piece is adjusted by rotating the adjusting nut
Between spacing so that spacing between the locating slot of each locating piece is equal with the width of pole plate after cutting fragment；S2:
The spacing between the side positioning cephalic par at both ends is adjusted by rotating the side positioning head so that the side positioning cephalic par at both ends it
Between spacing be equal to pole plate two sides to be cut auxiliary hangers end between spacing；S3: each cutter on wafer separator is distinguished
It is inserted into each three locating slots, between observing at this time the spacing between cutter two-by-two whether between the locating slot two-by-two
Away from equal；If unequal, it is replaced with the correct collet of size；Illustrate that collet size is correct if equal.This calibrating installation energy
The spacing between cutter two-by-two for detecting wafer separator.
Further, further comprising the steps of after the S3: S4: each cutter to be kept to be still located at each locating slot
While interior, side positioning head described in both ends is placed individually into two lateral conveyor track relative inners of wafer separator, observes this
When two lateral conveyor track relative inners between spacing whether spacing between the end of side positioning head described in both ends is equal, if
Unequal, then the spacing adjusted between two lateral conveyor tracks is equal to the two, and i.e. calibration finishes at this time, then removes this calibration cartridge
It sets；Illustrate that the spacing between the conveyor track of two sides is accurate if equal.This calibrating installation is between calibrating out between cutter
After inaccuracy, the collet of accurate size is needed replacing, this calibrating installation can also be used to wafer separator two sides after replacing collet
Spacing between transmission track carries out calibration adjustment.
Working principle and beneficial effect: when needing to calibrate wafer separator, first according to the size of pole plate to be cut, lead to
Spacing between each locating piece of overwinding modulation section nut adjustment, so that spacing and cutting fragment between the locating slot of each locating piece
The width of pole plate afterwards is equal；The spacing between the side positioning cephalic par at both ends is adjusted by rotary side positioning head, so that both ends
Side positioning cephalic par between spacing be equal to pole plate two sides to be cut auxiliary hangers end between spacing；Then by fragment
Three cutters on machine are inserted into respectively in three locating slots on three pieces of locating pieces of this calibrating installation, observe at this time cutter two-by-two
Between spacing whether spacing between locating slot two-by-two is equal, if unequal, illustrate the collet ruler between cutter two-by-two
Very little mistake is locked after being replaced with the correct collet of size by locking nut；Illustrate between cutter two-by-two if equal
Collet size is correct, and while then keeping each cutter to be still located in each locating slot, the both ends side positioning head of the present apparatus is distinguished
Be placed on two supporting plates of two lateral conveyor track relative inners of wafer separator, observation at this time two lateral conveyor track relative inners it
Between spacing whether spacing between the end of both ends side positioning head is equal, if unequal, adjust two lateral conveyor tracks it
Between spacing to both it is equal, at this time i.e. calibration finish.Then it can start wafer separator progress fragment after taking this calibrating installation away
Operation.
As it can be seen that the spacing between the cutter two-by-two of wafer separator is more accurate after being calibrated using the present apparatus to wafer separator,
Cumulative errors will not be caused because of the micro-deformation of trial cut pole plate itself, substantially increase pole plate fragment qualification rate, reduce trial cut
Cost, calibration accuracy are accurate；Spacing between two lateral conveyor tracks of wafer separator can also be calibrated.
Detailed description of the invention
Fig. 1 is the overlooking structure diagram of wafer separator in the prior art；
Fig. 2 is the overlooking structure diagram of pole plate to be cut；
Fig. 3 is the overlooking structure diagram of energy storage pole plate cutter location calibrating installation in the present invention；
Fig. 4 is schematic diagram when being calibrated using the energy storage pole plate cutter location calibrating installation in the present invention to wafer separator；
Fig. 5 is schematic diagram when being cut using the wafer separator after calibration to pole plate.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing.
Present embodiments provide for a kind of energy storage pole plate cutter location calibrating installations, such as scheme, mainly fixed by three shown in 3
Position 2, six block 1, positioning screw adjusting nuts 3, six positioning intermediate plates, 6, two side positioning heads 5 and graduated scale 7 form, and three fixed
Position block 1 is equidistantly set on positioning screw 2, and each 1 two sides of locating piece are arranged a positioning intermediate plate 6 respectively, in determining for two sides
Position 6 two sides of intermediate plate are also threaded in two adjusting nuts 3 on positioning screw 2 respectively, are determined two panels by two adjusting nuts 3
Position intermediate plate 6 and locating piece 1 are fixedly clamped；The locating slot 4 vertical with positioning screw 2, and each positioning are offered on each locating piece 1
Slot 4 is respectively positioned on the same side of positioning screw 2；It is threadedly coupled one respectively with interior adjusting screw thread at the both ends of positioning screw 2
Side positioning head 5, one end of positioning screw 2, which is further fixed on, to be divided with the comparable graduated scale 7 of its length, the graduated scale 7 with each locating slot 4
It Wei Yu not 2 two sides of positioning screw.
When being calibrated using the present apparatus to wafer separator, first according to the size of pole plate 8 to be cut, adjusted by rotation
Nut 3 simultaneously adjusts the spacing between each locating piece 1 according to graduated scale 7 so that the spacing between the locating slot 4 of each locating piece 1 with
The width of pole plate after cutting fragment is equal；Pass through rotary side positioning head 5 and compares the side positioning head 5 that graduated scale 7 adjusts both ends
Spacing between end, so that the spacing between 5 end of side positioning head at both ends, which is equal to 8 two sides of pole plate to be cut, assists hangers 9
End between spacing；Then three cutters 10 on wafer separator are inserted into respectively on three pieces of locating pieces 1 of this calibrating installation
Three locating slots 4 in, whether spacing between locating slot 4 two-by-two is equal for the spacing between cutter 10 two-by-two at this time for observation,
If unequal, illustrate 12 dimensional error of collet between cutter 10 two-by-two, passes through lock after being replaced with the correct collet 12 of size
Tight nut 13 is locked；Illustrate that 12 size of collet between cutter 10 two-by-two is correct if equal, then, such as Fig. 4, keeps each
While cutter 10 is still located in each locating slot 4, the two sides that the both ends side positioning head 5 of the present apparatus is placed individually into wafer separator are passed
Send on two supporting plates 15 of 14 relative inner of track, observation at this time the spacing between two lateral conveyor tracks, 14 relative inner whether with
Spacing between the end of both ends side positioning head 5 is equal, if unequal, adjusts spacing between two lateral conveyor tracks 14 to two
Person is equal, and i.e. calibration finishes at this time.Then after taking this calibrating installation away, such as Fig. 5, pole plate 8 to be cut is placed into transmission track
Wafer separator can be started on 14 and carry out Fragmentation.
The technical concepts and features of above embodiment only to illustrate the invention, its object is to allow be familiar with technique
People cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent transformation or modification that Spirit Essence is done, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of energy storage pole plate cutter location calibrating installation, which is characterized in that three locating pieces (1) are equidistantly set in positioning spiral shell
On bar (2), each locating piece (1) is fixedly clamped by adjusting nut (3) screw thread of two sides in the positioning screw (2) respectively
On, it is offered the locating slot vertical with the positioning screw (2) (4) on each locating piece (1), and each locating slot
(4) it is respectively positioned on the same side of the positioning screw (2)；Side positioning head (5) are installed respectively at the both ends of the positioning screw (2).
2. energy storage pole plate cutter location calibrating installation according to claim 1, which is characterized in that in each locating piece
(1) have and be also arranged with positioning intermediate plate (6) respectively between each adjusting nut (3).
3. energy storage pole plate cutter location calibrating installation according to claim 1, which is characterized in that each side positioning head
(5) there is interior adjusting screw thread, each side positioning head (5) and the both ends of the positioning screw (2) pass through the interior adjusting screw thread
It is threadedly coupled.
4. energy storage pole plate cutter location calibrating installation according to any one of claim 1 to 3, which is characterized in that in institute
It states and is further fixed on positioning screw (2) and the comparable graduated scale of its length (7), and the graduated scale (7) and each locating slot
(4) positioning screw (2) two sides are located at.
5. a kind of calibration of energy storage pole plate cutter location calibrating installation according to any one of claims 1 to 4 to wafer separator
Method, which comprises the following steps:
S1: it according to the size of pole plate to be cut (8), is adjusted between each locating piece (1) by rotating the adjusting nut (3)
Spacing so that spacing between the locating slot (4) of each locating piece (1) is equal with the width of pole plate after cutting fragment；
S2: adjusting the spacing between side positioning head (5) end at both ends by rotating the side positioning head (5), so that both ends
Spacing between side positioning head (5) end is equal to the spacing between the end of pole plate to be cut (8) two sides auxiliary hangers (9)；
S3: each cutter (10) on wafer separator is inserted into respectively in each three locating slots (4), observes at this time cutter two-by-two
(10) whether spacing between the locating slot (4) two-by-two is equal for spacing between；If unequal, it is correct to be replaced with size
Collet (12)；Illustrate that collet (12) size is correct if equal.
6. energy storage pole plate cutter location calibrating installation according to claim 5 is to the calibration method in wafer separator, feature
It is, further comprising the steps of after the S3:
S4: keep each cutter (10) be still located at each locating slot (4) it is interior while, by side positioning head (5) described in both ends respectively
It is placed into two lateral conveyor tracks (14) relative inner of wafer separator, observation is at this time between two lateral conveyor tracks (14) relative inner
Whether spacing between the end of side positioning head (5) described in both ends is equal for spacing, if unequal, adjusts two lateral conveyor tracks
(14) spacing between is equal to the two, and i.e. calibration finishes at this time, then removes this calibrating installation；Illustrate two if equal
Spacing between side conveyor track (14) is accurate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910264844.XA CN109967788B (en) | 2019-04-03 | 2019-04-03 | Energy storage polar plate cutter position calibration device and calibration method thereof |
| CN202311505237.0A CN117718523A (en) | 2019-04-03 | 2019-04-03 | Calibration method of energy storage polar plate cutter position calibration device and slicing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910264844.XA CN109967788B (en) | 2019-04-03 | 2019-04-03 | Energy storage polar plate cutter position calibration device and calibration method thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311505237.0A Division CN117718523A (en) | 2019-04-03 | 2019-04-03 | Calibration method of energy storage polar plate cutter position calibration device and slicing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109967788A true CN109967788A (en) | 2019-07-05 |
| CN109967788B CN109967788B (en) | 2023-12-15 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311505237.0A Pending CN117718523A (en) | 2019-04-03 | 2019-04-03 | Calibration method of energy storage polar plate cutter position calibration device and slicing machine |
| CN201910264844.XA Active CN109967788B (en) | 2019-04-03 | 2019-04-03 | Energy storage polar plate cutter position calibration device and calibration method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311505237.0A Pending CN117718523A (en) | 2019-04-03 | 2019-04-03 | Calibration method of energy storage polar plate cutter position calibration device and slicing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN117718523A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815349A (en) * | 2019-10-24 | 2020-02-21 | 马晓梅 | Food shearing mechanism based on principle of opening and shutting |
| CN113458502A (en) * | 2021-06-01 | 2021-10-01 | 厦门花横茂贸易有限公司 | Lithium battery polar plate production equipment |
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|---|---|---|---|---|
| EP1749603A1 (en) * | 2005-08-05 | 2007-02-07 | Vai Cosim | Device for slitting sheets |
| CN101274377A (en) * | 2007-03-21 | 2008-10-01 | 矿山机械和轧钢机械制造有限公司 | Device for cutting metal sheets or similar and method for determining and/or calibrating the cutting clearance of such a device |
| WO2012115388A2 (en) * | 2011-02-25 | 2012-08-30 | (주)에스와이리더 | Apparatus for cutting |
| CN204566183U (en) * | 2015-03-11 | 2015-08-19 | 富阳明洋实业有限公司 | A kind of cutter with calibration function |
| CN204603419U (en) * | 2015-04-30 | 2015-09-02 | 海宁市美裕晟电子有限公司 | A kind of automatic board separator of LED lamp bar |
| CN205364519U (en) * | 2016-01-28 | 2016-07-06 | 金湖县恒祥塑料制品有限公司 | Automatic adjust device of inflation film manufacturing machine cutter distance |
| CN209830440U (en) * | 2019-04-03 | 2019-12-24 | 天能集团江苏科技有限公司 | Energy storage polar plate cutter position calibrating device |
-
2019
- 2019-04-03 CN CN202311505237.0A patent/CN117718523A/en active Pending
- 2019-04-03 CN CN201910264844.XA patent/CN109967788B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1749603A1 (en) * | 2005-08-05 | 2007-02-07 | Vai Cosim | Device for slitting sheets |
| CN101274377A (en) * | 2007-03-21 | 2008-10-01 | 矿山机械和轧钢机械制造有限公司 | Device for cutting metal sheets or similar and method for determining and/or calibrating the cutting clearance of such a device |
| WO2012115388A2 (en) * | 2011-02-25 | 2012-08-30 | (주)에스와이리더 | Apparatus for cutting |
| CN204566183U (en) * | 2015-03-11 | 2015-08-19 | 富阳明洋实业有限公司 | A kind of cutter with calibration function |
| CN204603419U (en) * | 2015-04-30 | 2015-09-02 | 海宁市美裕晟电子有限公司 | A kind of automatic board separator of LED lamp bar |
| CN205364519U (en) * | 2016-01-28 | 2016-07-06 | 金湖县恒祥塑料制品有限公司 | Automatic adjust device of inflation film manufacturing machine cutter distance |
| CN209830440U (en) * | 2019-04-03 | 2019-12-24 | 天能集团江苏科技有限公司 | Energy storage polar plate cutter position calibrating device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815349A (en) * | 2019-10-24 | 2020-02-21 | 马晓梅 | Food shearing mechanism based on principle of opening and shutting |
| CN113458502A (en) * | 2021-06-01 | 2021-10-01 | 厦门花横茂贸易有限公司 | Lithium battery polar plate production equipment |
| CN113458502B (en) * | 2021-06-01 | 2022-06-24 | 广东鑫创源科技有限公司 | Lithium battery polar plate production equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117718523A (en) | 2024-03-19 |
| CN109967788B (en) | 2023-12-15 |
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