CN116101826A - Diaphragm tension control device and method and lithium battery winding machine - Google Patents

Diaphragm tension control device and method and lithium battery winding machine Download PDF

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Publication number
CN116101826A
CN116101826A CN202310305031.7A CN202310305031A CN116101826A CN 116101826 A CN116101826 A CN 116101826A CN 202310305031 A CN202310305031 A CN 202310305031A CN 116101826 A CN116101826 A CN 116101826A
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CN
China
Prior art keywords
diaphragm
motor
roller
winding
tension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310305031.7A
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Chinese (zh)
Inventor
请求不公布姓名
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Guangdong Lyric Robot Automation Co Ltd
Original Assignee
Guangdong Lyric Robot Intelligent Automation Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Lyric Robot Intelligent Automation Co Ltd filed Critical Guangdong Lyric Robot Intelligent Automation Co Ltd
Priority to CN202310305031.7A priority Critical patent/CN116101826A/en
Publication of CN116101826A publication Critical patent/CN116101826A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H01M10/0409—Machines for assembling batteries for cells with wound electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/005—Devices for making primary cells
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention relates to the technical field of lithium battery manufacturing equipment, and discloses a diaphragm tension control device and method and a lithium battery winding machine. The device comprises a diaphragm main driving assembly, a diaphragm unwinding shaft and a diaphragm winding mechanism, wherein the diaphragm main driving assembly is positioned between the downstream of a first guide roller and a winding needle, the diaphragm unwinding shaft is arranged at the upstream of the first guide roller, the diaphragm main driving assembly comprises a first diaphragm roller and a first motor, the first motor is used for driving the first diaphragm roller to rotate, and a clutch is connected between the first motor and the first diaphragm roller; the method comprises the following steps: the clutch is started within a certain time after the corresponding winding motor or the first motor of the diaphragm unreeling shaft is started, the speed of the first motor is controlled to be the winding linear speed of the winding needle in the battery core winding stage, and the speed of the first motor is controlled to be the sum of the winding linear speed of the winding needle and the virtual shaft speed of the work position in the battery core work position changing stage. The invention can reduce the influence of diaphragm tension fluctuation on the diaphragm during winding, and promote the tension of the diaphragm to be stable, thereby improving the efficiency and the precision of diaphragm winding control.

Description

Diaphragm tension control device and method and lithium battery winding machine
Technical Field
The invention relates to the technical field of lithium battery manufacturing equipment, in particular to a diaphragm tension control device and method and a lithium battery winding machine.
Background
At present, in the production process of lithium batteries, a battery core is formed by winding a cathode sheet, an anode sheet and a diaphragm through a winding machine, and after the diaphragm is unreeled, the diaphragm is pulled to a winding station through a plurality of guiding rollers for winding. Because the fluctuation that the diaphragm tension produced after the diaphragm passes through the guide roller many times is big for control diaphragm coiling's efficiency and precision all have the reduction of different degree, control efficiency is lagged seriously in unit time simultaneously, causes the battery core layer by layer difference that produces because of tension lagging in the battery core coiling process, thereby influences electric core production quality.
Disclosure of Invention
The invention provides a diaphragm tension control device and method and a lithium battery winding machine, and solves the technical problem that the efficiency and precision of diaphragm winding control are reduced due to fluctuation of diaphragm tension when a diaphragm is wound by the winding machine at present.
The first aspect of the present invention provides a diaphragm tension control apparatus comprising a diaphragm main drive assembly;
the diaphragm main driving assembly is positioned between the downstream of the first guide roller and the winding needle, and a diaphragm unwinding shaft is arranged at the upstream of the first guide roller;
the diaphragm main driving assembly comprises a first diaphragm roller and a first motor, and the first motor is used for driving the first diaphragm roller to rotate;
a clutch is connected between the first motor and the first diaphragm passing roller.
According to one implementation manner of the first aspect of the present invention, the first diaphragm passing roller and the winding needle are adjacently arranged, so that the diaphragm passes through the first diaphragm passing roller and directly enters the winding needle to be wound.
According to one possible manner of the first aspect of the invention, the diaphragm tension control apparatus further comprises at least one second guide-through roller;
the second guide-through roller is located between the diaphragm main drive assembly and the winding needle.
According to one possible manner of the first aspect of the present invention, the diaphragm tension control apparatus further includes an active pressing roller;
the driving press roller is matched with the first diaphragm passing roller to press the diaphragm on the first diaphragm passing roller.
According to one possible implementation manner of the first aspect of the present invention, the driving pressing roller is provided with a cylinder for adjusting the driving pressing roller.
According to one manner of realisable of the first aspect of the invention, the diaphragm tension control apparatus further comprises a tension swing arm assembly;
the tension swing arm assembly is positioned between the diaphragm main drive assembly and the downstream of the first guide roller;
the tension swing arm assembly comprises a tension swing arm, a second diaphragm passing roller and a second motor, wherein two second diaphragm passing rollers are symmetrically arranged on the tension swing arm, and the second motor is connected with the tension swing arm.
According to one possible manner of the first aspect of the present invention, the diaphragm tension control apparatus further includes a main controller;
the main controller is electrically connected with the first motor, the second motor and the clutch respectively so as to control the movement of the first motor, the second motor and the clutch.
According to one possible implementation of the first aspect of the present invention, the clutch is a magnetic particle clutch.
A second aspect of the present invention provides a lithium battery winder provided with a separator tension control device according to any one of the modes described above.
A third aspect of the present invention provides a diaphragm tension control method based on a diaphragm tension control apparatus as set forth in any one of the above modes, the method comprising:
starting the clutch within a first preset time after the winding motor corresponding to the diaphragm unwinding shaft is started or within a second preset time after the first motor is started;
controlling the speed of the first motor to be a first speed in a battery core winding stage; the first speed is the winding linear speed of the winding needle;
in the battery core changing stage, controlling the speed of the first motor to be a second speed; the second speed is the sum of the winding linear speed of the winding needle and the virtual shaft speed of the work changing station.
From the above technical scheme, the invention has the following advantages:
the device comprises a diaphragm main driving assembly, wherein the diaphragm main driving assembly is positioned between the downstream of a first guide roller and a winding needle, a diaphragm unwinding shaft is arranged at the upstream of the first guide roller, the diaphragm main driving assembly comprises a first diaphragm roller and a first motor, the first motor is used for driving the first diaphragm roller to rotate, and a clutch is connected between the first motor and the first diaphragm roller; the method comprises the steps of starting a clutch within a first preset time after a winding motor corresponding to a diaphragm unreeling shaft is started or within a second preset time after the first motor is started, controlling the speed of the first motor to be the winding linear speed of a winding needle in a battery core winding stage, and controlling the speed of the first motor to be the sum of the winding linear speed of the winding needle and the virtual shaft speed of a work exchange station in a battery core work exchange stage; according to the invention, the influence of diaphragm tension fluctuation on the winding is reduced by utilizing the diaphragm main driving component, and the speed difference between the first motor and the winding needle is absorbed by arranging the clutch between the first motor and the first diaphragm passing roller, so that the tension of the diaphragm is stabilized, the efficiency and the precision of controlling the winding of the diaphragm are improved, and the production quality of the battery cell is improved as a whole.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic illustration of an upper diaphragm tape deck provided in an alternative embodiment of the present invention;
FIG. 2 is a schematic diagram of a diaphragm main drive assembly according to an alternative embodiment of the present invention;
FIG. 3 is a schematic view of a tension swing arm assembly according to an alternative embodiment of the present invention;
FIG. 4 is a flow chart of a diaphragm tension control method according to an alternative embodiment of the present invention.
Reference numerals:
1-first guiding through a roller; 2-winding needle; 3-unwinding the membrane; 4-passing the first diaphragm through a roller; 5-a first motor; a 6-clutch; 7-winding a large disc; 8, correcting the guide roller; 9-second guiding through the roller; 10-driving press rolls; 11-cylinder; 12-mounting seats; 13-tension swing arms; 14-passing the second diaphragm through a roller; 15-a second motor.
Detailed Description
The embodiment of the invention provides a diaphragm tension control device and method and a lithium battery winding machine, which are used for solving the technical problem that the efficiency and precision of diaphragm winding control are reduced due to the fluctuation of diaphragm tension when a diaphragm is wound by the winding machine at present.
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures 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 embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
Embodiments of the first aspect of the present invention provide a diaphragm tension control apparatus.
FIG. 1 shows a schematic diagram of an upper diaphragm tape feed provided by an embodiment of the present invention; fig. 2 shows a schematic structural diagram of a diaphragm main driving assembly according to an embodiment of the present invention.
The embodiment of the invention provides a diaphragm tension control device which comprises a diaphragm main driving component. Referring to fig. 1 and 2, the diaphragm main driving assembly is located between the downstream of the first guiding roller 1 and the winding needle 2, and the upstream of the first guiding roller 1 is provided with a diaphragm unwinding shaft 3;
the diaphragm main driving assembly comprises a first diaphragm passing roller 4 and a first motor 5, wherein the first motor 5 is used for driving the first diaphragm passing roller 4 to rotate;
a clutch 6 is connected between the first motor 5 and the first diaphragm roller 4.
Wherein the winding needle 2 is mounted on a winding large disc 7.
The tension of the diaphragm can be greatly fluctuated after the diaphragm passes through the guide roller for many times, so that the battery core layer-by-layer difference is generated due to tension lag in the battery core winding process, and the production quality of the battery core is affected. According to the embodiment of the invention, the diaphragm main driving assembly is arranged between the downstream of the first guiding roller 1 and the winding needle 2, the first diaphragm passing roller 4 in the diaphragm main driving assembly is driven by the first motor 5, so that the equivalent friction force and inertia of the first guiding roller 1 can be compensated, the regulation compensation of the diaphragm tension is realized, and the influence of the diaphragm tension fluctuation on the diaphragm during winding can be reduced; by providing the clutch 6 between the first motor 5 and the first diaphragm passing roller 4, the clutch 6 can absorb these effects to promote the diaphragm tension to be stabilized, no matter whether the speed of the first diaphragm passing roller 4 is faster than the speed of the winding needle 2 or slower than the speed of the winding needle 2. Therefore, by using the diaphragm tension control device of the embodiment, the efficiency and the precision of controlling the diaphragm winding are improved, and the production quality of the battery cell is improved as a whole.
As a specific embodiment, the first guide-through roller 1 is generally provided with a plurality of rollers, such as the rollers at the numbers 1-7, 10-14 and 17-21 in fig. 1, which are the first guide-through roller 1.
As a specific embodiment, in the winding machine with the process deviation correcting system, a deviation correcting guide roller 8 is also provided, such as the rollers at the numbers 15-16 in fig. 1 are deviation correcting guide rollers 8.
In one possible manner, the first separator passing roller 4 is disposed adjacent to the winding needle 2, so that the separator passes through the first separator passing roller 4 and directly enters the winding needle 2 for winding.
In another realisable way, the diaphragm tension control means further comprise at least one second guide-through roller 9; the second guide roller 9 is located between the diaphragm main drive assembly and the winding needle 2. The second guide-through roller 9 may be provided in plural, as the rollers at the numbers 23 to 24 in fig. 1 are all the second guide-through rollers 9.
In one possible way, as shown in fig. 2, the diaphragm tension control apparatus further comprises an active pressing roller 10; the driving press roller 10 is matched with the first diaphragm passing roller 4 to press the diaphragm on the first diaphragm passing roller 4, an air cylinder 11 for adjusting the driving press roller 10 is arranged on the driving press roller 10, and the air cylinder 11 is arranged on the mounting seat 12.
In one manner that can be achieved, the diaphragm tension control apparatus further includes a tension swing arm assembly. As shown in fig. 1, 3, the tension swing arm assembly is located downstream of the first guide-through roller 1 and between the diaphragm main drive assembly; the tension swing arm assembly comprises a tension swing arm 13, a second diaphragm passing roller 14 and a second motor 15, wherein two second diaphragm passing rollers 14 are symmetrically arranged on the tension swing arm 13, and the second motor 15 is connected with the tension swing arm 13.
Specifically, in fig. 1, the rollers at numbers 8 and 9 are second separator pass rollers 14. The diaphragm is released from the diaphragm unreeling shaft 3, passes through a first guide roller 1, a second diaphragm guide roller 14, a deviation correcting guide roller 8, a first diaphragm guide roller 4 and a second guide roller 9, and finally enters the reeling needle 2 for reeling.
In this embodiment, through tension swing arm assembly, can with the cooperation of diaphragm owner drive assembly compensate first guide and pass equivalent friction and inertia of roller 1, improve the compensation dynamics.
It should be noted that, the existing diaphragm mechanism of the winding machine in the new energy industry also adopts a tension swing arm assembly in the original diaphragm unwinding mechanism, but a diaphragm main driving assembly is not arranged. This prior art construction would be affected by the tension of the tension swing arm 13 during winding, resulting in misalignment of the diaphragm and wrinkling of the diaphragm. In this embodiment, the cooperation of the diaphragm main driving assembly and the tension swing arm assembly can effectively avoid the tension influence of the tension swing arm 13.
In one possible implementation, the diaphragm tension control apparatus further includes a master controller (not shown in fig. 1-3);
the main controller is electrically connected to the first motor 5, the second motor 15 and the clutch 6, respectively, to control the movements of the first motor 5, the second motor 15 and the clutch 6.
In one possible implementation, the clutch 6 is a magnetic particle clutch.
The diaphragm tension control device according to the above embodiment of the present application can be applied not only to the diaphragm tension control in all the winder apparatuses, but also to other occasions where stable tension control is required.
The invention also provides a lithium battery winding machine, and the separator tension control device according to any one of the embodiments is arranged on the lithium battery winding machine.
The invention also provides a diaphragm tension control method based on the diaphragm tension control apparatus according to any one of the embodiments above.
Fig. 4 shows a flowchart of a diaphragm tension control method according to an embodiment of the present invention. As shown in fig. 4, the method for controlling tension of a diaphragm provided in this embodiment includes:
step S1, starting the clutch 6 within a first preset time after the corresponding winding motor of the diaphragm unwinding shaft 3 is started or within a second preset time after the first motor 5 is started;
step S2, controlling the speed of the first motor 5 to be a first speed in a battery core winding stage; the first speed is the winding linear speed of the winding needle 2;
step S3, controlling the speed of the first motor 5 to be a second speed in the battery cell working position changing stage; the second speed is the sum of the winding linear speed of the winding needle 2 and the virtual axis speed of the work changing station.
As a specific embodiment, the first preset time and the second preset time are both set to 3 seconds.
The composition of the diaphragm tension control apparatus and the specific manner of operation thereof, which performs the diaphragm tension control method of the embodiments of the present application, have been described in detail in the above embodiments of the diaphragm tension control apparatus, and will not be described in detail herein.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention 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 technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A diaphragm tension control apparatus comprising a diaphragm main drive assembly;
the diaphragm main driving assembly is positioned between the downstream of the first guide roller and the winding needle, and a diaphragm unwinding shaft is arranged at the upstream of the first guide roller;
the diaphragm main driving assembly comprises a first diaphragm roller and a first motor, and the first motor is used for driving the first diaphragm roller to rotate;
a clutch is connected between the first motor and the first diaphragm passing roller.
2. The diaphragm tension control apparatus of claim 1, wherein said first diaphragm passing roller is disposed adjacent to said winding needle such that a diaphragm passes said first diaphragm passing roller and then directly enters said winding needle for winding.
3. The diaphragm tension control apparatus of claim 1, further comprising at least one second guide-through roller;
the second guide-through roller is located between the diaphragm main drive assembly and the winding needle.
4. The diaphragm tension control apparatus of claim 1, further comprising an active pressure roller;
the driving press roller is matched with the first diaphragm passing roller to press the diaphragm on the first diaphragm passing roller.
5. The diaphragm tension control apparatus of claim 4, wherein said active pressure roller is provided with a cylinder for adjusting the active pressure roller.
6. The diaphragm tension control apparatus of claim 1, further comprising a tension swing arm assembly;
the tension swing arm assembly is positioned between the diaphragm main drive assembly and the downstream of the first guide roller;
the tension swing arm assembly comprises a tension swing arm, a second diaphragm passing roller and a second motor, wherein two second diaphragm passing rollers are symmetrically arranged on the tension swing arm, and the second motor is connected with the tension swing arm.
7. The diaphragm tension control apparatus of claim 6, further comprising a master controller;
the main controller is electrically connected with the first motor, the second motor and the clutch respectively so as to control the movement of the first motor, the second motor and the clutch.
8. The diaphragm tension control apparatus of claim 1, wherein said clutch is a magnetic particle clutch.
9. A lithium battery winder, characterized in that the lithium battery winder is provided with a diaphragm tension control device according to any one of claims 1-7.
10. A method of controlling diaphragm tension, wherein the method is based on a diaphragm tension control apparatus according to any one of claims 1-7, the method comprising:
starting the clutch within a first preset time after the winding motor corresponding to the diaphragm unwinding shaft is started or within a second preset time after the first motor is started;
controlling the speed of the first motor to be a first speed in a battery core winding stage; the first speed is the winding linear speed of the winding needle;
in the battery core changing stage, controlling the speed of the first motor to be a second speed; the second speed is the sum of the winding linear speed of the winding needle and the virtual shaft speed of the work changing station.
CN202310305031.7A 2023-03-24 2023-03-24 Diaphragm tension control device and method and lithium battery winding machine Pending CN116101826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310305031.7A CN116101826A (en) 2023-03-24 2023-03-24 Diaphragm tension control device and method and lithium battery winding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310305031.7A CN116101826A (en) 2023-03-24 2023-03-24 Diaphragm tension control device and method and lithium battery winding machine

Publications (1)

Publication Number Publication Date
CN116101826A true CN116101826A (en) 2023-05-12

Family

ID=86254625

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310305031.7A Pending CN116101826A (en) 2023-03-24 2023-03-24 Diaphragm tension control device and method and lithium battery winding machine

Country Status (1)

Country Link
CN (1) CN116101826A (en)

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