CN114221098A - A controllable negative pressure automatic sealing method for batteries - Google Patents

A controllable negative pressure automatic sealing method for batteries Download PDF

Info

Publication number
CN114221098A
CN114221098A CN202111484316.9A CN202111484316A CN114221098A CN 114221098 A CN114221098 A CN 114221098A CN 202111484316 A CN202111484316 A CN 202111484316A CN 114221098 A CN114221098 A CN 114221098A
Authority
CN
China
Prior art keywords
negative pressure
battery
injection hole
vacuum
liquid injection
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
CN202111484316.9A
Other languages
Chinese (zh)
Inventor
刘一卓
庞亚芳
陈超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lishen Qingdao New Energy Co Ltd
Original Assignee
Lishen Qingdao New Energy 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 Lishen Qingdao New Energy Co Ltd filed Critical Lishen Qingdao New Energy Co Ltd
Priority to CN202111484316.9A priority Critical patent/CN114221098A/en
Publication of CN114221098A publication Critical patent/CN114221098A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/52—Removing gases inside the secondary cell, e.g. by absorption
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/618—Pressure control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • H01M50/645—Plugs
    • 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

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Filling, Topping-Up Batteries (AREA)

Abstract

The invention discloses a controllable negative pressure automatic sealing method of a battery, which comprises the following steps: firstly, for a plurality of electric cores to be subjected to negative pressure sealing, respectively lightly placing a rubber nail at a liquid injection hole at the top of each electric core, and keeping the rubber nails in a non-plugging state; secondly, pre-fixing each glue nail; thirdly, placing a plurality of battery cores in a vacuum negative pressure environment, and then performing negative pressure air extraction operation to enable the interior of the battery cores to be in a negative pressure state and discharge the gas in the battery cores outwards; and fourthly, stopping performing negative pressure air extraction operation on the vacuum negative pressure environment, and automatically sucking the rubber nails into the liquid injection hole through the air pressure difference between the inside and the outside of the battery cell, thereby realizing automatic negative pressure sealing. The invention can relieve the cost pressure of the negative pressure sealing process of the battery, can conveniently and reliably automatically suck the rubber nails into the liquid injection holes of the battery during the negative pressure sealing operation, has obvious sealing effect, and has the advantages of simple method, high efficiency, batch implementation and no secondary pollution.

Description

Controllable negative pressure automatic sealing method for battery
Technical Field
The invention relates to the technical field of energy, in particular to a controllable negative pressure automatic sealing method of a battery.
Background
The negative pressure sealing is an essential important link in the manufacturing process of the battery cell, and has the main functions of: through the negative pressure air extraction operation, the interior of the shell of the battery cell reaches a negative pressure state after the formation is finished, so that enough buffer space is ensured to exist in the battery cell, and the expansion of the battery cell caused by gas production in the circulation process is buffered.
At present, the negative pressure capper is widely used in each battery enterprise at home and abroad for carry out the negative pressure operation of sealing to the battery, however, the current negative pressure capper, its purchase cost is high to in the negative pressure air exhaust process, the inside electrolyte of battery is easily sucked out to negative pressure mouth wherein, thereby causes secondary pollution to other batteries, simultaneously, because require "a mouth to a core (one negative pressure mouth is only to correspond and connects an electric core)" there is the shortcoming that work efficiency is low.
Disclosure of Invention
The invention aims to provide a controllable negative pressure automatic sealing method of a battery aiming at the technical defects in the prior art.
Therefore, the invention provides a controllable negative pressure automatic sealing method of a battery, which comprises the following steps:
firstly, for a plurality of electric cores to be subjected to negative pressure sealing, respectively lightly arranging a rubber nail at a liquid injection hole at the top of each electric core, keeping the rubber nails in a non-plugging state, and enabling the rubber nails to have gaps with the liquid injection holes;
secondly, pre-fixing each rubber nail to prevent the rubber nail from falling off from the liquid injection hole during negative pressure air exhaust operation;
thirdly, placing the plurality of battery cells which are subjected to the pre-fixing operation of the glue nails into a hollow sealed vacuum negative pressure environment, and then performing negative pressure air extraction operation on the vacuum negative pressure environment to enable the interior of the battery cells to be in a negative pressure state, so that the gas in the battery cells is discharged outwards;
and fourthly, stopping performing negative pressure air extraction operation on the vacuum negative pressure environment, and automatically sucking the glue nail into the liquid injection hole through the air pressure difference between the inside and the outside of the battery cell under the action of atmospheric pressure, thereby realizing automatic negative pressure sealing.
Preferably, in the first step, the middle-lower part of the rubber nail is in clearance fit with the liquid injection hole.
Preferably, in the first step, the shape of the lower part of the glue nail is conical shape or truncated cone shape;
the diameters of the cone and the cone frustum are smaller than the diameter of the circular liquid injection hole.
Preferably, in the first step, the upper part of the rubber nail is in the shape of a cylinder, and the diameter of the cylinder is 0-1mm larger than the diameter of the circular liquid injection hole.
Preferably, in the second step, the top of the glue nail is pre-fixed by using the adhesive tape, and the specific operations are as follows: the front end and the rear end of a longitudinally distributed adhesive tape are respectively stuck to the front side and the rear side of the battery cell, and the bottom surface of the middle of the adhesive tape is in contact with the top of the adhesive nail.
Preferably, in the third step, a vacuum negative pressure environment, in particular a vacuum box;
the vacuum box is communicated with the air pumping port of the vacuum pump;
the exhaust port of the vacuum pump is communicated with the external atmosphere;
and the vacuum pump is used for discharging the gas in the vacuum box outwards so that the environmental pressure in the vacuum box reaches a preset value.
Compared with the prior art, the controllable negative pressure automatic sealing method of the battery has the advantages that the design is scientific, the glue nail is placed at the liquid injection hole of the battery and is pre-fixed, then the negative pressure environment is integrally manufactured for the battery core to exhaust the battery core, the interior of the battery core is in the negative pressure state, when the negative pressure operation environment is cancelled, the air pressure difference is formed under the action of the atmospheric pressure, and the glue nail is automatically sucked into the liquid injection hole through the air pressure difference, so that the purpose of automatically sealing the battery is achieved, and the method has great practical significance.
The invention can relieve the cost pressure of the negative pressure sealing process of the battery, can conveniently and reliably suck the rubber nails into the liquid injection holes of the battery during the negative pressure sealing operation, has obvious sealing effect, has the advantages of simple and efficient method, batch implementation and no secondary pollution, effectively solves the problems of high cost, low efficiency, easy pollution and the like caused by the use of the traditional negative pressure sealing machine, and can adjust the final internal state of the battery core by adjusting the negative pressure and the pressure maintaining time.
Drawings
FIG. 1 is a basic flow chart of a method for automatically sealing a battery under a controllable negative pressure according to the present invention;
fig. 2 is a schematic diagram of a position relationship between a battery and an adhesive tape or an adhesive nail according to an embodiment of the method for automatically sealing a battery under a controllable negative pressure.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and embodiments.
Referring to fig. 1 and 2, the invention provides a controllable negative pressure automatic sealing method of a battery, which comprises the following steps:
firstly, for a plurality of electric cores 4 to be sealed under negative pressure, a glue nail 2 is respectively and lightly arranged at a liquid injection hole 3 at the top of each electric core 4, the glue nail 2 is kept in a non-plugging state, and a gap is formed between the glue nail 2 and the liquid injection hole 3;
secondly, pre-fixing each glue nail 2 to prevent the glue nails 2 from falling off from the liquid injection holes 3 during negative pressure air exhaust operation;
thirdly, placing the plurality of battery cells 4 which are subjected to the glue nail pre-fixing operation into a hollow sealed vacuum negative pressure environment, and then performing negative pressure air extraction operation on the vacuum negative pressure environment to enable the interior of the battery cells 4 to be in a negative pressure state, so that the gas in the battery cells 4 is discharged outwards;
and fourthly, stopping performing negative pressure air extraction operation on the vacuum negative pressure environment, and automatically sucking the glue nail 2 into the liquid injection hole 3 through the air pressure difference between the inside and the outside of the battery core 4 under the action of the atmospheric pressure, thereby realizing automatic negative pressure sealing.
In the first step, the middle-lower part of the rubber nail 2 is in clearance fit with the liquid injection hole 3.
In the first step, the shape of the lower part of the rubber nail 2 is conical shape or truncated cone shape;
the diameters of the cone and the truncated cone are smaller than the diameter of the circular liquid injection hole 3.
In the first step, the upper part of the rubber nail 2 is in the shape of a cylinder, and the diameter of the cylinder is 0-1mm larger than that of the circular liquid injection hole 3 (namely, 0-1mm larger than that of the liquid injection hole 3).
The rubber nails 2 are elastic rubber nails, and the material used therefor may be any material as long as it does not react with the electrolyte.
In the second step, the top of the adhesive tape 1 is used for pre-fixing the adhesive nail 2, and the specific operation is as follows: the front end and the rear end of a longitudinally distributed adhesive tape 1 are respectively stuck to the front side and the rear side of the battery core 4, and the bottom surface of the middle part of the adhesive tape 1 is contacted with the top of the adhesive nail 2. Of course, other pre-fixing methods of the glue nails can be used, not limited to adhesive tapes.
In the third step, the vacuum negative pressure environment can be specifically a vacuum box which is communicated with the extraction opening of the vacuum pump;
the exhaust port of the vacuum pump is communicated with the external atmosphere;
and the vacuum pump is used for exhausting the gas in the vacuum box outwards so that the ambient pressure in the vacuum box reaches a preset value (for example, 5-10 Kpa).
Of course, in the present invention, the hollow sealed vacuum negative pressure environment is not limited to the vacuum box.
Compared with the prior art, the controllable negative pressure automatic sealing method of the battery provided by the invention has the following beneficial effects:
1. the cost is low. In the invention, a device cheaper than a negative pressure sealing machine can be selected for negative pressure sealing, such as: vacuum box, and maintenance cost is low.
2. No secondary pollution. The invention can provide a negative pressure environment for the whole battery core, does not need to use a negative pressure sealing machine as the prior art, and avoids the problem of sucking out electrolyte caused by the suction nozzle of the negative pressure sealing machine, thereby effectively preventing the electrolyte from causing secondary pollution to other batteries.
3. High efficiency. The traditional negative pressure sealing machine adopts 'one nozzle to one core', namely, one negative pressure nozzle only causes negative pressure to the inside of a single electric core, but the method has the advantage of 'one machine to multiple cores', can place a plurality of batteries in a vacuum negative pressure environment (such as a vacuum box), provides a negative pressure environment for a plurality of electric cores at the same time, realizes the negative pressure automatic sealing operation of the plurality of electric cores, and improves the processing efficiency.
4. And (4) controllable. The invention can ensure the final exhaust effect in the battery cell by adjusting the environmental pressure (5Kpa-10Kpa) and the pressure maintaining time (more than 5s) in the vacuum negative pressure environment (such as a vacuum box).
In summary, compared with the prior art, the controllable negative pressure automatic sealing method of the battery provided by the invention has scientific design, the glue nail is placed at the liquid injection hole of the battery and is pre-fixed, then the negative pressure environment is integrally manufactured for the battery core to exhaust the battery core, so that the interior of the battery core is in a negative pressure state, when the negative pressure operation environment is cancelled, the air pressure difference is formed under the action of the atmospheric pressure, and the glue nail is automatically sucked into the liquid injection hole through the air pressure difference, so that the purpose of automatically sealing the battery is achieved, and the method has great practical significance.
The invention can relieve the cost pressure of the negative pressure sealing process of the battery, can conveniently and reliably suck the rubber nails into the liquid injection holes of the battery during the negative pressure sealing operation, has obvious sealing effect, has the advantages of simple and efficient method, batch implementation and no secondary pollution, effectively solves the problems of high cost, low efficiency, easy pollution and the like caused by the use of the traditional negative pressure sealing machine, and can adjust the final internal state of the battery core by adjusting the negative pressure and the pressure maintaining time.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1.一种电池的可控负压自动封口方法，其特征在于，包括以下步骤：1. a controllable negative pressure automatic sealing method of a battery, is characterized in that, comprises the following steps: 第一步，对于待负压封口的多只电芯(4)，分别在每只电芯(4)顶部的注液孔(3)轻置一个胶钉(2)，保持胶钉(2)处于不塞紧状态，让胶钉(2)与注液孔(3)存在间隙；In the first step, for the plurality of cells (4) to be sealed by negative pressure, lightly place a glue nail (2) on the liquid injection hole (3) at the top of each cell (4), and keep the glue nail (2) In the unplugged state, there is a gap between the glue nail (2) and the injection hole (3); 第二步，对每个胶钉(2)进行预固定操作，防止在负压抽气操作时，胶钉(2)从注液孔(3)中脱落；In the second step, a pre-fixing operation is performed on each glue nail (2) to prevent the glue nail (2) from falling off from the liquid injection hole (3) during the negative pressure pumping operation; 第三步，将已完成胶钉预固定操作的多只电芯(4)，放入中空密封的真空负压环境中，然后对真空负压环境进行负压抽气操作，使得电芯(4)的内部处于负压状态，从而将电芯(4)内部的气体向外排出；In the third step, put the plurality of battery cells (4) that have completed the pre-fixing operation of the glue nails into a hollow and sealed vacuum negative pressure environment, and then perform a negative pressure pumping operation on the vacuum negative pressure environment, so that the battery cells (4) ) is in a negative pressure state, so that the gas inside the cell (4) is discharged to the outside; 第四步，停止对真空负压环境进行负压抽气操作，这时候，在大气压的作用下，通过电芯(4)内外的气压差，将胶钉(2)自动吸入注液孔(3)中，从而实现自动负压封口。The fourth step is to stop the negative pressure pumping operation of the vacuum negative pressure environment. At this time, under the action of atmospheric pressure, the glue nail (2) is automatically sucked into the liquid injection hole (3) through the air pressure difference between the inside and outside of the battery cell (4). ) to achieve automatic negative pressure sealing. 2.如权利要求1所述的电池的可控负压自动封口方法，其特征在于，在第一步中，胶钉(2)的中下部，与注液孔(3)之间为间隙配合。2. The controllable negative pressure automatic sealing method of the battery according to claim 1, wherein in the first step, the middle and lower parts of the glue nail (2) and the liquid injection hole (3) are clearance fit . 3.如权利要求1所述的电池的可控负压自动封口方法，其特征在于，在第一步中，胶钉(2)的下部形状，为圆锥形状或者圆锥台形状；3. The controllable negative pressure automatic sealing method of battery as claimed in claim 1, is characterized in that, in the first step, the shape of the lower part of the glue nail (2) is a cone shape or a truncated cone shape; 圆锥和圆锥台的直径，小于圆形的注液孔(3)的直径。The diameter of the cone and truncated cone is smaller than the diameter of the circular injection hole (3). 4.如权利要求1所述的电池的可控负压自动封口方法，其特征在于，在第一步中，胶钉(2)的上部形状为圆柱体形状，该圆柱体的直径，大于圆形的注液孔(3)直径0-1mm。4. The controllable negative pressure automatic sealing method of battery as claimed in claim 1, is characterized in that, in the first step, the shape of the upper part of the glue nail (2) is the shape of a cylinder, and the diameter of the cylinder is larger than a circle The diameter of the liquid injection hole (3) is 0-1mm. 5.如权利要求1所述的电池的可控负压自动封口方法，其特征在于，在第二步中，使用胶带(1)对胶钉(2)的顶部进行预固定，具体操作为：将一根纵向分布的胶带(1)的前后两端分别粘贴到电芯(4)的前后两侧，并且让胶带(1)的中部底面与胶钉(2)的顶部相接触。5. The controllable negative pressure automatic sealing method of battery as claimed in claim 1, it is characterized in that, in the second step, use adhesive tape (1) to pre-fix the top of the glue nail (2), the concrete operation is: Affix the front and rear ends of a longitudinally distributed tape (1) to the front and rear sides of the battery cell (4) respectively, and let the middle bottom surface of the tape (1) contact the top of the glue nail (2). 6.如权利要求1至5中任一项所述的电池的可控负压自动封口方法，其特征在于，在第三步中，真空负压环境，具体为真空箱；6. The controllable negative pressure automatic sealing method of the battery according to any one of claims 1 to 5, wherein in the third step, a vacuum negative pressure environment, specifically a vacuum box; 该真空箱与真空泵的抽气口相连通；The vacuum box is communicated with the suction port of the vacuum pump; 真空泵的排气口，与外部大气环境相连通；The exhaust port of the vacuum pump is connected to the external atmosphere; 真空泵，用于将真空箱内的气体向外排出，使真空箱内的环境压力达到预设值。The vacuum pump is used to discharge the gas in the vacuum box to the outside, so that the ambient pressure in the vacuum box reaches the preset value.
CN202111484316.9A 2021-12-07 2021-12-07 A controllable negative pressure automatic sealing method for batteries Pending CN114221098A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111484316.9A CN114221098A (en) 2021-12-07 2021-12-07 A controllable negative pressure automatic sealing method for batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111484316.9A CN114221098A (en) 2021-12-07 2021-12-07 A controllable negative pressure automatic sealing method for batteries

Publications (1)

Publication Number Publication Date
CN114221098A true CN114221098A (en) 2022-03-22

Family

ID=80700120

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111484316.9A Pending CN114221098A (en) 2021-12-07 2021-12-07 A controllable negative pressure automatic sealing method for batteries

Country Status (1)

Country Link
CN (1) CN114221098A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1705144A (en) * 2004-06-01 2005-12-07 肇庆市风华锂电池有限公司 Method and apparatus for battery vacuum sealing
CN205692902U (en) * 2016-06-23 2016-11-16 芜湖格利特新能源科技有限公司 A kind of power lithium-ion battery gluing spike devices
CN106784590A (en) * 2017-01-16 2017-05-31 力信（江苏）能源科技有限责任公司 A kind of vacuum stopper glue closing device and its mouth-sealing method suitable for electrokinetic cell
CN108871695A (en) * 2018-06-08 2018-11-23 合肥国轩高科动力能源有限公司 Leakage detection device used before lithium battery liquid injection
CN210379251U (en) * 2019-08-06 2020-04-21 瑞浦能源有限公司 A high negative pressure sealing device and a negative pressure sealing mechanism after the cell is injected with liquid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1705144A (en) * 2004-06-01 2005-12-07 肇庆市风华锂电池有限公司 Method and apparatus for battery vacuum sealing
CN205692902U (en) * 2016-06-23 2016-11-16 芜湖格利特新能源科技有限公司 A kind of power lithium-ion battery gluing spike devices
CN106784590A (en) * 2017-01-16 2017-05-31 力信（江苏）能源科技有限责任公司 A kind of vacuum stopper glue closing device and its mouth-sealing method suitable for electrokinetic cell
CN108871695A (en) * 2018-06-08 2018-11-23 合肥国轩高科动力能源有限公司 Leakage detection device used before lithium battery liquid injection
CN210379251U (en) * 2019-08-06 2020-04-21 瑞浦能源有限公司 A high negative pressure sealing device and a negative pressure sealing mechanism after the cell is injected with liquid

Similar Documents

Publication Publication Date Title
CN206179977U (en) Electrolyte -filling device of accumulator
CN205394399U (en) A heating and dismantling fixture
CN213660437U (en) Feeding sucker module and solar cell piece feeding device
CN202572118U (en) Thinning structure of LED wafer
CN114221098A (en) A controllable negative pressure automatic sealing method for batteries
CN106784168B (en) Cleaning and cooling device for silicon wafers before printing in the solar cell preparation process
CN107359286B (en) Battery flexible package and vacuum air pumping method for lithium ion battery containing same
CN101976741B (en) Ultrasonic wave dispersing and gel irrigating technology of gel battery
CN209275482U (en) Go into mould air supporting formula belt conveyors
CN104438154B (en) The piece pole plate of lead-acid accumulator two processes all-in-one
CN111162029A (en) A kind of crystal taking auxiliary mechanism and method
CN208111470U (en) A film transfer device and a solar cell processing system
CN204407409U (en) A kind of lithium-ion battery liquid injection device
CN203536394U (en) Automatic blanking device of polycrystalline silicon wafer horizontal texturing machine
CN210211392U (en) Vacuum chuck structure suitable for friction welding mould
CN202912341U (en) Thin film solar cell transparent conducting oxide (TCO) glass automatic loading turnover mechanism
CN209870860U (en) Sucker tool
CN107968185B (en) An Efficient Li-ion Battery Vacuum Electrolyte Injection Mechanism
CN207736835U (en) A kind of stringing device of handbag
CN206797851U (en) A kind of handware pad pasting fixture
CN211587086U (en) Centrifugal device with vacuum defoaming function
CN204720496U (en) A kind of storage battery multiple branch circuit acid suction hose and inhale sour equipment
CN219462853U (en) A dust removal device for lithium battery electrode ingredients
CN216827652U (en) A FRP lighting board edge wrapping device
CN221596728U (en) Vacuum imbibition equipment of alkaline battery

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20220322

RJ01 Rejection of invention patent application after publication