CN114583418B - Lithium battery liquid injection production method, liquid injection mechanism and liquid injection production equipment - Google Patents
Lithium battery liquid injection production method, liquid injection mechanism and liquid injection production equipment Download PDFInfo
- Publication number
- CN114583418B CN114583418B CN202210205100.2A CN202210205100A CN114583418B CN 114583418 B CN114583418 B CN 114583418B CN 202210205100 A CN202210205100 A CN 202210205100A CN 114583418 B CN114583418 B CN 114583418B
- Authority
- CN
- China
- Prior art keywords
- battery
- liquid injection
- station
- valve
- injection hole
- 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.)
- Active
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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention discloses a lithium battery liquid injection production method, a liquid injection mechanism and liquid injection production equipment, wherein a plurality of rotary circulation type stations are arranged on a rotary table liquid injection production line, the battery can be vacuumized through the liquid injection mechanism in the rotation process of each station, electrolyte is quickly injected into the battery by utilizing the negative pressure effect, the injection time is shortened, and the injected electrolyte is further quickly permeated into the whole battery by pressurization; in the standing process of the battery, the vacuum pumping and the pressurization are respectively carried out on the inside of the battery by utilizing the first liquid injection hole and the second liquid injection hole, so that the injected electrolyte forms reciprocating motion in the inside of the battery between the first liquid injection hole and the second liquid injection hole, and the absorption efficiency of the electrolyte is accelerated. The invention can simply, conveniently and efficiently realize continuous production and processing of the lithium battery injection liquid, and remarkably improves the injection liquid production efficiency.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a lithium battery liquid injection production method, a liquid injection mechanism and liquid injection production equipment.
Background
At present, the lithium battery industry develops rapidly, and is a sudden advance in the aspect of power batteries, and along with the progress of technology, the power batteries become a great mainstream.
In the process of manufacturing lithium batteries, liquid injection is a very critical process. In the production process of the battery, electrolyte needs to be injected through the liquid injection hole formed in the battery. However, since the positions of the liquid injection holes are fixed, and most batteries are provided with only a single liquid injection hole, the electrolyte entering the battery cavity from the liquid injection hole is easy to have a problem of uneven distribution. In addition, because a certain amount of gas exists in the battery, the injected electrolyte cannot well cover the whole space in the battery, so that the coverage area is small, and the phenomenon of low liquid absorption of the battery is caused. In addition, because before annotating the liquid, annotate and be sealed state between the notes liquid hole of liquid needle and battery, lead to annotating the intracavity atmospheric pressure and can increase gradually in the liquid in-process, then hinder the absorption rate of electrolyte. These problems all bring about a disadvantage of reduced production efficiency. If the injection pressure or the injection speed is increased forcefully, hidden dangers such as liquid spraying, battery swelling and the like can be generated, so that the product quality is affected.
Therefore, in order to cope with the current high-speed development of electronic products and the power battery market with the greatly increased demand, a new lithium battery injection technology is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a lithium battery liquid injection production method, a liquid injection mechanism and liquid injection production equipment, which can effectively improve or solve the adverse effects of low liquid injection efficiency, battery deformation and the like of the existing power battery, improve the liquid injection process yield and the battery quality and safety, and shorten the production period of the whole manufacturing of the battery.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the invention provides a lithium battery injection production method, which comprises the following steps:
step one: arranging a battery to be injected on a feeding station, vacuumizing the interior of the battery to a first vacuum degree through a first injection hole formed in the top surface of the battery, and keeping for a first time;
step two: the battery is rotated onto a liquid injection station along the rotation center, continuously passes through the first liquid injection hole, and electrolyte is injected into the battery by utilizing pressure difference, wherein the liquid injection time is second time;
step three: pressurizing the interior of the battery to a first pressure through the first liquid injection hole, maintaining for a third time, and then decompressing the battery to normal pressure;
Step four: continuously turning the battery to a standing station, vacuumizing the interior of the battery to a second vacuum degree through a second liquid injection hole which is arranged on the battery and is opposite to the first liquid injection hole in the standing process, and keeping for a fourth time;
step five: continuing to pressurize the interior of the battery to a second pressure through the second liquid injection hole and maintaining for a fifth time;
step six: vacuumizing the battery to a third vacuum degree through the first liquid injection hole, and keeping the sixth time;
step seven: continuing to pressurize the interior of the battery to a third pressure through the first liquid injection hole and maintaining for a seventh time;
step eight: continuously transferring the battery to a blanking station, and decompressing the battery to normal pressure;
and the first liquid injection hole and the second liquid injection hole are used for respectively vacuumizing and pressurizing the inside of the battery, so that electrolyte injected into the battery forms reciprocating motion in the battery between the first liquid injection hole and the second liquid injection hole, and the absorption efficiency of the electrolyte is accelerated.
The lithium battery injection production method has the beneficial effects that: the double liquid injection holes are formed in the battery, so that the flow of the injected electrolyte can be controlled by utilizing the pressure effect between the two liquid injection holes, and the whole coverage of the electrolyte in the battery is realized; through vacuumizing the battery, the electrolyte can be quickly injected into the battery by utilizing the formed negative pressure effect, the injection time is shortened, and the injected electrolyte is quickly permeated into the whole battery by pressurizing; and in the process of standing the battery, the vacuum pumping and the pressurization are respectively carried out on the inside of the battery by utilizing the first liquid injection hole and the second liquid injection hole, so that the electrolyte injected into the inside of the battery forms reciprocating motion in the inside of the battery between the first liquid injection hole and the second liquid injection hole, and the absorption efficiency of the electrolyte is accelerated. Therefore, the method can ensure the accuracy of battery liquid injection, quicken the liquid absorption efficiency of the battery, improve the quality of the battery, reduce the leakage risk, greatly reduce the deformation risk of the battery, and be beneficial to improving the safety of the battery.
Further, the steps four to seven are circularly executed one to a plurality of times. Wherein, can cooperate to set up one to a plurality of stations of standing according to the battery capacity size, annotate liquid measure and battery composition difference, adjust circulation number of times and time in turn. Thus, in the process that the electrolyte is circulated and reciprocated inside the battery between the first liquid injection hole and the second liquid injection hole, the absorption efficiency of the electrolyte can be accelerated.
Further, the first vacuum degree is greater than the second vacuum degree and the third vacuum degree. In this way, a relatively larger negative pressure state is formed inside the battery before the injection of the electrolyte, the injection speed of the electrolyte is promoted, and a large amount of overflow of the electrolyte from the battery during the flowing is avoided after the injection.
Further, the first pressure, the second pressure, and the third pressure are equal. In this way, the electrolyte at different stages can form a uniform flow inside the battery.
Further, the first step further comprises the following steps:
performing an insulation test on the battery;
weighing the battery before filling the liquid;
performing clamp loading on the battery;
the eighth step further comprises the following steps:
Performing disketting on the battery;
weighing the battery after filling the liquid;
sealing the first liquid injection hole and the second liquid injection hole;
and performing discharging and dishing on the battery. Therefore, the quality of the incoming material battery before liquid injection can be ensured, the liquid injection effect of the battery can be confirmed, and the sealing state of the battery after liquid injection can be ensured; and a one-to-one traceable relation can be formed between the battery and the clamp, so that closed-loop management of the state of the battery is realized.
The invention also provides a lithium battery liquid injection mechanism, which comprises:
the first needle head and the second needle head are used for being driven to be respectively connected with a first liquid injection hole and a second liquid injection hole which are arranged at two opposite ends of the top surface of the battery to be injected; the first needle is respectively connected with a liquid injection pipeline, a first vacuum pipeline and a first drying gas pipeline through a first liquid storage cup, the second needle is respectively connected with a second vacuum pipeline and a second drying gas pipeline through a second liquid storage cup, the liquid injection pipeline is connected to a liquid injection pump, the first vacuum pipeline and the second vacuum pipeline are connected to a vacuum source, the first drying gas pipeline and the second drying gas pipeline are connected to a drying gas source, a first valve is arranged on the liquid injection pipeline, a second valve is arranged on the first vacuum pipeline, a third valve is arranged on the first drying gas pipeline, a fourth valve is arranged on the second vacuum pipeline, and a fifth valve is arranged on the second drying gas pipeline;
When the battery sequentially rotates from the feeding station to the liquid injection station and the standing station along the rotation center, electrolyte is injected into the battery under negative pressure by different combinations of opening and closing of the first valve to the fifth valve, and vacuumizing and pressurizing are respectively carried out on the inside of the battery through the first liquid injection hole and the second liquid injection hole, so that the electrolyte forms reciprocating motion in the battery between the first liquid injection hole and the second liquid injection hole, and the absorption efficiency of the electrolyte is accelerated.
The lithium battery liquid injection mechanism has the beneficial effects that: by arranging the first needle head and the second needle head, the battery can be driven to move to form sealing joint with the first liquid injection hole and the second liquid injection hole on the battery, so that the internal pressure of the battery in the liquid injection and standing processes is effectively ensured to meet the requirements; the first needle head and the second needle head are respectively connected with a vacuum source and a drying air source, and the battery can be respectively vacuumized and pressurized through the first needle head or the second needle head, so that the electrolyte can reciprocate in the battery between the first liquid injection hole and the second liquid injection hole; by arranging the liquid storage cups on the first needle head and the second needle head respectively, partial electrolyte sucked out of the first liquid injection hole or the second liquid injection hole due to vacuum pumping can be buffered, and the electrolyte is prevented from flowing back to a vacuum source; through setting up first valve to fifth valve to through the different combinations of opening and closing to first valve to fifth valve, control is poured into the battery inside with electrolyte under the negative pressure, and control is poured into the hole through first notes liquid hole and second and is annotated liquid hole and carry out evacuation and pressurization respectively to the battery inside, control makes the electrolyte form reciprocating motion in the battery inside between first notes liquid hole and the second notes liquid hole, realizes accelerating the absorption efficiency of electrolyte.
Further, the different combinations of opening and closing of the first valve to the fifth valve by performing the opening and closing include:
when the battery is positioned on the feeding station, the second valve is opened, and the first valve, the third valve and the fifth valve are closed, so that the interior of the battery is vacuumized through the first liquid injection hole;
when the battery is positioned on the liquid injection station, electrolyte is injected into the battery through the first liquid injection hole by opening the first valve and closing the second valve to the fifth valve by utilizing the pressure difference;
after the liquid is injected, the third valve is opened, and the first valve, the second valve, the fourth valve, the fifth valve are closed, so that the inside of the battery is pressurized through the first liquid injection hole;
when the battery is positioned on the standing station, firstly, vacuumizing the interior of the battery through the second liquid injection hole by opening the fourth valve and closing the first valve to the third valve and the fifth valve; then, the fifth valve is opened, and the first valve is closed to the four valves, so that the interior of the battery is pressurized through the second liquid injection hole; then, the second valve is opened, and the first valve, the third valve and the fifth valve are closed, so that the inside of the battery is vacuumized through the first liquid injection hole; and then, opening the third valve, and closing the first valve to the second valve and the fourth valve to the fifth valve to pressurize the inside of the battery through the first liquid injection hole. Thus, by means of different combinations of opening and closing of the first valve to the fifth valve, electrolyte is injected into the battery under negative pressure, and vacuumizing and pressurizing are respectively carried out on the battery through the first liquid injection hole and the second liquid injection hole, so that the electrolyte can form effective control of reciprocating motion in the battery between the first liquid injection hole and the second liquid injection hole.
The invention also provides lithium battery liquid injection production equipment, which comprises the lithium battery liquid injection mechanism.
The lithium battery liquid injection production equipment has the beneficial effects that: the precision of battery annotating the liquid can be guaranteed for battery imbibition efficiency, promotes battery quality, reduces the weeping risk, and can greatly reduced battery deformation risk, also is favorable to improving the security of battery, and this equipment can realize the continuous production processing of lithium cell annotating liquid simply and efficiently.
Further, the method further comprises the following steps:
the rotary table type liquid injection production line is provided with a battery feeding station, a liquid injection station, one to a plurality of standing stations and a discharging station in turn according to the rotary table rotation direction, wherein each station is respectively used for loading the battery, the battery is sequentially circulated among the stations through the rotation of the rotary table, the liquid injection mechanism is arranged above the stations of the rotary table in a one-to-one correspondence manner and driven to synchronously rotate and lift so as to be respectively and hermetically jointed with the first liquid injection hole and the second liquid injection hole on the battery on the feeding station and to be separated from the first liquid injection hole and the second liquid injection hole on the discharging station. Therefore, through setting up carousel formula annotate liquid production line, not only can shorten production line length, practice thrift the production space, still can be when annotating liquid and distributing the alternation to the battery and keep still, with annotate liquid mechanism cooperation operation, effectively improve battery imbibition efficiency and battery and annotate the uniformity of liquid measure, and battery shaping quality has assurance to shortened the production cycle of battery overall manufacturing, thereby showing the cost reduction.
Further, the method further comprises the following steps: the circulation production line is positioned at one side of the rotary disc type liquid injection production line and is sequentially provided with a battery incoming material station, an insulation test station, a liquid injection front weighing station, a clamp buffer station, a clamp tray disassembling station, a liquid injection rear weighing station, a post-treatment station and a discharging tray loading station;
the device comprises a charging station, an insulating test station, a liquid injection front weighing station, a liquid injection rear weighing station, a post-treatment station and a defective product buffer station, wherein the clamp buffer station is further arranged between the clamp buffer station and the charging station, the defective product buffer station is further arranged on one side of the insulating test station, the liquid injection front weighing station, the liquid injection rear weighing station and the post-treatment station, and the battery is connected between the liquid injection front weighing station and the clamp tray station through a manipulator. Therefore, by arranging the insulation test station, the insulation performance of the incoming material battery can be tested one by one, and the safety of the battery is improved; by arranging the weighing station before and after filling, the batteries can be weighed by scanning the codes before and after filling one by one, so that closed-loop management of the production period of the battery filling procedure is realized, and the quality of the batteries is improved. The battery provided by the embodiment of the invention has good quality, and is beneficial to improving the energy density and the safety of the battery.
Drawings
FIG. 1 is a schematic diagram of a liquid injection mechanism for a lithium battery according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram showing an arrangement structure of a liquid injection production device for lithium batteries according to a preferred embodiment of the present invention;
fig. 3 is a flow chart of a method for producing a lithium battery injection according to a preferred embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. 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. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items.
The invention provides a lithium battery liquid injection production method, a liquid injection mechanism and liquid injection production equipment, which can effectively improve or solve the adverse effects of low liquid injection efficiency, battery deformation and the like of the existing power battery and improve the liquid injection process yield and the battery safety.
According to the embodiment of the invention, the double liquid injection holes are formed in the battery, insulation test is carried out on incoming materials, then code scanning weighing is carried out, the battery and the clamp are bound, the battery is ensured to have a one-to-one traceability effect, then liquid injection is carried out, then distributed alternating standing is carried out, clamp disc disassembling is carried out after standing is completed, then the liquid injection effect of the battery is confirmed, closed-loop management on the state of the battery is realized, then the liquid injection holes of the battery are sealed, and finally disc loading and discharging are carried out.
The invention can ensure the accuracy of battery liquid injection, quicken the liquid absorption efficiency of the battery, improve the quality of the battery, reduce the risk of liquid leakage, greatly reduce the risk of battery deformation and is also beneficial to improving the safety of the battery. The invention can simultaneously realize the continuous production and processing of the lithium battery injection liquid simply, conveniently and efficiently.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Reference is made to fig. 1. The lithium battery liquid injection mechanism 20 comprises a first needle 202 and a second needle 220. The first needle 202 and the second needle 220 are used for respectively engaging with the first liquid injection hole 101 and the second liquid injection hole 103 provided on opposite ends of the top surface of the battery 10 to be injected below when driven, and injecting liquid into the battery 10.
The first needle 202 is connected to the liquid injection pipe 205, the first vacuum pipe 211 and the first dry gas pipe 209 through the first liquid storage cup 203, respectively. The second needle 220 is connected to the second vacuum line 213 and the second dry gas line 215, respectively, via a second reservoir 219.
The priming conduit 205 is connected to a priming pump 206. The first vacuum line 211 and the second vacuum line 213 may be commonly connected to a vacuum source 212. The first drying gas duct 209 and the second drying gas duct 215 may be commonly connected to a drying gas source 217.
The first valve 204 is arranged on the liquid injection pipeline 205, the second valve 210 is arranged on the first vacuum pipeline 211, the third valve 208 is arranged on the first dry gas pipeline 209, the fourth valve 214 is arranged on the second vacuum pipeline 213, and the fifth valve 216 is arranged on the second dry gas pipeline 215.
In a preferred embodiment, the first vacuum pipe 211 and the first drying gas pipe 209 may be connected to the first liquid storage cup 203 together through the first communication pipe 207; the second vacuum line 213 and the second dry gas line 215 may be commonly connected to a second reservoir 219 via a second communication line 218.
In a preferred embodiment, the first valve 204 through the fifth valve 216 may comprise diaphragm valves. But is not limited thereto.
In a preferred embodiment, a first seal 201 may be provided on the lower end of the first needle 202 and a second seal 221 may be provided on the lower end of the second needle 220. When the first needle 202 and the second needle 220 are driven to be respectively connected with the first liquid injection hole 101 and the second liquid injection hole 103 on the battery 10, the first needle 202 and the second needle 220 can be in sealing connection with the first liquid injection hole 101 and the second liquid injection hole 103 by utilizing the first sealing ring 201 and the second sealing ring 221, so that liquid leakage is avoided, and the internal pressure of the battery 10 in the liquid injection and standing processes is effectively ensured to meet the requirements.
The priming mechanism 20 may be disposed above a rotating platform, such as the carousel priming line 30 shown in FIG. 2. Wherein, the turntable 301 is disposed on the turntable type liquid injection production line 30, and the turntable 301 has a rotation center. The rotary table 301 may be sequentially provided with a battery feeding station 3001, a liquid injection station 3002, one or more alternating standing stations 3003 and a discharging station 3004 according to the rotation direction of the rotary table 301.
When the battery 10 sequentially rotates from the feeding station 3001 to the liquid filling station 3002 and the alternating standing station 3003 along the rotation center of the rotary table 301, electrolyte is filled into the battery 10 under negative pressure by performing different combinations of opening and closing on the first valve 204 to the fifth valve 216, and vacuum pumping and pressurization are respectively performed on the inside of the battery 10 through the first liquid filling hole 101 and the second liquid filling hole 103, so that the electrolyte forms reciprocating motion in the inside of the battery 10 between the first liquid filling hole 101 and the second liquid filling hole 103, and the absorption efficiency of the electrolyte is accelerated.
Further, by performing different combinations of opening and closing of the first valve 204 to the fifth valve 216, specific examples may include:
when the battery 10 is located on the feeding station 3001 before the liquid injection, the second valve 210 is opened, and the first valve 204, the third valve 208 and the fifth valve 216 are closed, so that the interior of the battery 10 is vacuumized through the first liquid injection hole 101.
When the battery 10 is positioned at the liquid injection station 3002 during liquid injection, the electrolyte is injected into the battery 10 through the first liquid injection hole 101 by opening the first valve 204 and closing the second valve 210 to the fifth valve 216.
After the injection, the inside of the battery 10 is pressurized through the first injection hole 101 by opening the third valve 208 and closing the first to second valves 204 to 210 and the fourth to fifth valves 214 to 216.
When the battery 10 is located on the alternating standing station 3003 during standing, the fourth valve 214 is opened, and the first valve 204, the third valve 208 and the fifth valve 216 are closed, so that the interior of the battery 10 is vacuumized through the second liquid injection hole 103; next, the inside of the battery 10 is pressurized through the second filling hole 103 by opening the fifth valve 216 and closing the first valve 204 to the fourth valve; then, the second valve 210 is opened, and the first valve 204, the third valve 208 and the fifth valve 216 are closed, so that the interior of the battery 10 is vacuumized through the first liquid injection hole 101; thereafter, the inside of the battery 10 is pressurized through the first filling hole 101 by opening the third valve 208 and closing the first to second valves 204 to 210 and the fourth to fifth valves 214 to 216.
The invention can realize the reciprocating movement of electrolyte inside the battery 10 between the first liquid injection hole 101 and the second liquid injection hole 103 by respectively connecting the first needle 202 and the second needle 220 with the vacuum source 212 and the drying air source 217 and respectively vacuumizing and pressurizing the battery 10 through the first needle 202 or the second needle 220. The invention also can buffer part of electrolyte sucked out by the first liquid injection hole 101 or the second liquid injection hole 103 due to vacuum pumping by arranging the first liquid storage cup 203 and the second liquid storage cup 219 on the first needle 202 and the second needle 220 respectively, so that the electrolyte is prevented from flowing back to the vacuum source 212. The invention also controls to inject electrolyte into the battery 10 under negative pressure by arranging the first valve 204 to the fifth valve 216 and executing different combinations of opening and closing the first valve 204 to the fifth valve 216, and controls to execute vacuumizing and pressurizing to the battery 10 through the first liquid injection hole 101 and the second liquid injection hole 103 respectively, so that the electrolyte forms reciprocating motion in the battery 10 between the first liquid injection hole 101 and the second liquid injection hole 103, thereby realizing accelerating the absorption efficiency of the electrolyte.
Reference is made to fig. 2. A lithium battery liquid injection apparatus according to the present invention may include a lithium battery liquid injection mechanism 20 (not shown) as described above provided on a turntable type liquid injection line 30, and a circulation line 40.
The turntable type liquid injection production line 30 is provided with a turntable 301, and a battery feeding station 3001, a liquid injection station 3002, one or more alternating standing stations 3003 and a discharging station 3004 are sequentially arranged on the turntable 301 according to the rotation direction of the turntable 301. For example, three alternating rest stations 3003 are shown. But is not limited thereto. Each station is used for loading the battery 10, and the battery 10 is sequentially circulated among the stations through the rotation of the turntable 301. The liquid injection mechanisms 20 are arranged above the stations of the rotary table 301 in a one-to-one correspondence manner, are driven to synchronously rotate and lift on the stations, so that the first needle 202 and the second needle 220 are respectively in sealing engagement with the first liquid injection hole 101 and the second liquid injection hole 103 on the battery 10 positioned on the feeding station 3001 through descending, or the first needle 202 and the second needle 220 are separated from the first liquid injection hole 101 and the second liquid injection hole 103 through lifting when the battery 10 rotates to the discharging station 3004.
The liquid injection mechanism 20 performs the above-mentioned liquid injection and standing of the battery 10 in the process of synchronously rotating with the battery 10, including injecting the electrolyte into the battery 10 under negative pressure by performing different combinations of the above-mentioned opening and closing of the first valve 204 to the fifth valve 216, and performing vacuum pumping and pressurizing respectively on the inside of the battery 10 through the first liquid injection hole 101 and the second liquid injection hole 103, so that the electrolyte forms a reciprocating motion in the inside of the battery 10 between the first liquid injection hole 101 and the second liquid injection hole 103, to accelerate the absorption efficiency of the electrolyte.
The circulation production line 40 is located at one side of the rotary table type liquid injection production line 30, and may be sequentially provided with a battery charging station 401, a hipot insulation test station 402, a pre-liquid injection weighing and code scanning station 403, a clamp buffer station 404, a clamp tray disassembling station 405, a post-liquid injection code scanning and weighing station 406, a post-treatment station 407 and a discharging and tray loading station 408.
Wherein, a clamp loading station 409 is further arranged between the clamp buffer station 404 and the loading station 3001 on the turntable type liquid injection production line 30. The battery 10 is connected between the pre-filling weighing and stacking station 403 and the jig palletizing station 409 by the manipulator 50.
And one side of the insulation test station 402, the pre-filling weighing code scanning station 403, the post-filling code scanning weighing station 406 and the post-treatment station 407 is also provided with a defective NG buffer station 410.
The work stations are correspondingly provided with work equipment, and the battery and the clamp can be circulated through the transmission line.
According to the lithium battery liquid injection production equipment, the insulation performance of the incoming battery 10 can be tested one by arranging the insulation test station 402, so that the safety of the battery is improved; by arranging the pre-filling code scanning station 403 and the post-filling code scanning weighing station 406, the batteries can be scanned and weighed one by one, so that the closed-loop management of the production period of the battery filling process is realized, and the quality of the batteries is improved; through setting up carousel formula notes liquid production line 30, can be after annotating liquid and distribution alternation formula to battery 10 and keep still, effectively improve battery imbibition efficiency and battery and annotate the uniformity of liquid measure, and battery 10 shaping quality has guaranteed to the production cycle of battery overall manufacturing has been shortened.
In addition, the lithium battery liquid injection production equipment disclosed by the invention can ensure the liquid injection precision of the battery, reduce the liquid leakage risk, greatly reduce the deformation risk of the battery, and be beneficial to improving the safety of the battery, and can simply, conveniently and efficiently realize the continuous production and processing of the liquid injection of the lithium battery.
The battery produced by using the lithium battery injection production equipment has good quality, and is beneficial to improving the energy density and the safety of the battery.
Reference is made to fig. 3. The lithium battery liquid injection production method can be used for carrying out battery liquid injection by using the lithium battery liquid injection production equipment. The invention relates to a lithium battery injection production method, which comprises the following steps:
step S100: and (5) charging a battery.
First, a battery charge to be filled is provided to a battery charge station 401. Two liquid injection holes, namely a first liquid injection hole 101 and a second liquid injection hole 103, are respectively arranged at two opposite ends of the top surface of the battery 10. The first and second injection holes 101 and 103 may be located at positions outside the two poles 102 of the battery 10, respectively (refer to fig. 1).
It should be understood that in embodiments of the present invention, the first cell 10 obtained should be a cell that is acceptable for water content testing.
The water content test requirement of the battery 10 is, for example, that the water content is 500ppm or less. Preferably the water content is less than or equal to 200ppm.
The batteries 10 may be transferred by tray or jig loading, or the single batteries 10 may be transferred by a robot or other auxiliary mechanism.
Step S200: and (5) insulation test.
It should be appreciated that in embodiments of the present invention, the positioning of the battery 10 is first performed at the insulation test station 402, and that the specific positioning may include a variety of conventional means. The battery 10 poles 102 may then be individually insulation tested using a tester. The test requirement is, for example, an insulation resistance of 25mΩ or less. Preferably the insulation resistance is less than or equal to 20mΩ.
The bad battery may be transferred to NG cache workstation 410. The bad batteries are uniformly processed according to the requirements; and the single battery insulation test data can be uploaded to a traceability system in real time, and the system is used for centralized management.
Step S300: front weighing and code scanning.
It should be understood that, in the embodiment of the present invention, the weighing and code scanning station 403 scans and weighs the battery 10 before the liquid is injected, so as to obtain the corresponding data before the liquid is injected into the battery 10, upload the data to the traceability system for centralized management, and identify and determine the current state of the battery 10 during code scanning. By setting the NG cache workstation 410, defective products can be rejected to the NG cache workstation 410, and bad circulation risks can be eliminated.
Before the battery 10 is weighed, a setting may be made for the weight range of the battery 10, i.e., a standard range defining the weight of the battery 10. The range may be derived from standard deviations of cell design and cell sampling, for example, the weight determination range may be selected to be +.2%, preferably ± 1%. By setting the NG cache workstation 410, defective products can be rejected to the NG cache workstation 410, and bad circulation risks can be eliminated.
Step S400: the battery is put into the clamp for dishing.
It should be understood that in the embodiment of the present invention, the battery 10, which is weighted well, is first palletized. When loading is performed by the empty jig buffer station 404, the empty jigs are transferred to the jig palletizing station 409. Then, the two clamping plates of the clamp are pushed open by driving. The battery 10 is then placed into the jig by the robot arm 50. The jacking driving mode of the clamp plate can be selected from a motor, an air cylinder, a cam and the like. The clamp can be designed as a whole, the clamping plates at the two sides can be connected by using a tension spring, and the bottom of the clamp can be provided with a locating pin, so that the transfer process can be rapidly and accurately located.
The jig caching station 404 is provided with a small number of empty jigs, preferably one-by-one.
Then battery feeding is carried out, the battery feeding sequence, the battery feeding position and the corresponding relation with the clamp can be memorized and bound by the program control of the liquid injection machine, and a one-to-one tracing effect is achieved. After the completion of the cell 10 palletizing, the jig is integrally transferred to the loading station 3001 of the turntable 301, that is, the cell 10 to be injected is disposed on the loading station 3001.
Step S500: and (5) filling the battery.
It should be appreciated that in the embodiment of the present invention, after the assembled battery 10 is first transferred to the loading station 3001, the filling machine confirms that the battery 10 is present in the fixture, that is, starts the filling process. The execution of the liquid injection program specifically comprises the following steps:
step S5001: the inside of the battery 10 is evacuated to a first vacuum degree through the first filling hole 101 and maintained for a first time.
When the battery 10 is located on the feeding station 3001 of the turntable 301, the first needle 202 and the second needle 220 of the liquid injection mechanism 20 are driven to descend, and the first needle 202 is pressed against the first liquid injection hole 101 through the first sealing ring 201, and the second needle 220 is pressed against the second liquid injection hole 103 through the second sealing ring 221. Next, the second valve 210 on the first vacuum line 211 is opened and the remaining valves are closed. Then, the in-jig battery 10 is subjected to a vacuum-pumping process. The gas inside the cavity of the battery 10 is pumped out through the first needle 202, the vacuum environment inside the battery 10 is ensured, the vacuum is pumped out to the vacuum degree of < -95kpa, the vacuum is maintained for 5 seconds, and then the first valve 204 is closed.
Step S5002: electrolyte is injected into the battery 10 through the first injection hole 101 by using a pressure difference, and the injection time is a second time.
When the liquid injection mechanism 20 rotates synchronously with the turntable 301 from the feeding station 3001 to the liquid injection station 3002, the first valve 204 is opened, and the rest valves are closed, so that liquid injection is performed through the liquid injection pump 206. Liquid is injected into the battery 10 on the fixture through the first needle 202 and the first liquid injection hole 101 by the first liquid storage cup 203, and liquid is injected by using pressure difference. The injection time can be, for example, 30s to 1min, and the specific time can be adjusted according to the injection amount.
Step S5003: the inside of the battery 10 is pressurized to the first pressure through the first filling hole 101 and held for a third time.
The third valve 208 is opened, the rest of the valves are closed, dry gas, inert gas, nitrogen or other low dew point gas is introduced into the battery 10 through the first injection hole 101 to 200kpa, and the temperature is maintained for 10 to 60 seconds, and then the third valve 208 is closed.
Step S5004: the cell 10 is depressurized to normal pressure.
Because the liquid injection turntable 301 is designed in multiple stations, the whole flow of the liquid injection can be decomposed, and the waiting time is reduced. That is, during the operation of the turntable 301, the actions of the other mechanisms can be performed synchronously without interference. In addition, the turntable 301 can reserve a certain dwell time at each station, so as to ensure the coordination of the actions of each mechanism or station, and the action of the liquid injection program is decomposed through the feeding station 3001 and the liquid injection station 3002, thereby improving the liquid injection efficiency.
Step S600: alternating standing.
It should be understood that in the embodiment of the present invention, the filled battery 10 is first moved from the filling station 3002 to the alternate resting station 3003 by rotation of the turntable 301, and the alternate resting is performed in a distributed manner, i.e., the resting program is started. Alternating rest may comprise performing the steps of:
step S6001: the inside of the battery 10 is evacuated to a second vacuum degree through the second filling hole 103 and maintained for a fourth time.
The battery 10 and the priming mechanism 20 continue to be synchronously rotated onto the alternating rest station 3003. During the rest, the fourth valve 214 on the second vacuum line 213 is opened and the remaining valves are closed. Then, the in-jig battery 10 is subjected to a vacuum-pumping process. The gas inside the cavity of the battery 10 is pumped out through the second needle 220, the vacuum environment inside the battery 10 is ensured, the vacuum is pumped out to the vacuum degree of < -80kpa, the vacuum is maintained for 10s-60s, and then the fourth valve 214 is closed.
Step S6002: the interior of the battery 10 continues to be pressurized to the second pressure through the second filler neck 103 and is maintained for a fifth time.
The fifth valve 216 is opened and the remaining valves are closed. The battery 10 is filled with a low dew point gas such as dry gas, inert gas, nitrogen gas, or the like to 200kpa through the second filling hole 103, and kept for 10 to 60 seconds, and then a fifth valve 216.
Step S6003: the inside of the battery 10 is vacuumized to a third vacuum degree through the first filling hole 101 and maintained for a sixth time.
The second valve 210 is opened and the remaining valves are closed. Then, the in-jig battery 10 is subjected to a vacuum-pumping process. The gas in the cavity of the battery 10 is pumped out through the first needle 202, so that the vacuum environment in the battery 10 is ensured, and the battery is vacuumized until the vacuum degree is less than-80 kpa, and the battery is kept for 10s-60s; after which the second valve 210 is closed.
Step S6004: the inside of the battery 10 continues to be pressurized to the third pressure through the first filling hole 101 and is maintained for a seventh time.
The third valve 208 is opened, the rest of the valves are closed, dry gas, inert gas, nitrogen or other low dew point gas is introduced into the battery 10 through the first injection hole 101 to 200kpa, and the temperature is maintained for 10 to 60 seconds, and then the third valve 208 is closed.
The steps S6001 to S6004 may be circularly performed one or more times. The number of alternating cycles and the time can be adjusted according to the capacity of the battery 10, the liquid injection amount and the composition of the battery 10. In this way, the absorption efficiency of the electrolyte can be accelerated in the process of circulating the electrolyte inside the battery 10 between the first injection hole 101 and the second injection hole 103.
Step S6005: after the standing is completed, the battery 10 is continuously rotated to the blanking station 3004, and the liquid injection mechanism 20 can be lifted up to enable the battery 10 to be decompressed to normal pressure.
Because the liquid injection turntable 301 is designed in a multi-station manner, the whole standing process can be decomposed, and the waiting time is reduced. That is, during the operation of the turntable 301, the actions of the other mechanisms can be performed synchronously without interference. In addition, the turntable 301 can reserve a certain dwell time at each station, ensure the coordination of the actions of each mechanism or station, and decompose the rest program action through three alternative rest stations 3003, thereby improving the liquid absorption efficiency of the battery 10.
In a preferred embodiment, the first vacuum level is set to be greater than the second vacuum level and the third vacuum level so as to form a relatively greater negative pressure state inside the battery 10 before the injection, promote the injection speed of the electrolyte, and prevent a large amount of overflow of the electrolyte from the battery 10 while flowing after the injection.
In a preferred embodiment, the first pressure, the second pressure and the third pressure are set to be equal, so that the electrolyte in different stages can form uniform flow inside the battery 10.
In an alternative embodiment, the method for pressurizing the interior of the battery includes introducing dry inert gas or nitrogen into the interior of the battery 10 through the first liquid injection hole 101 or the second liquid injection hole 103, so that the interior of the battery 10 is always in a state that the water content reaches the standard, unexpected reactions are effectively prevented, and the safety of liquid injection production is ensured.
Step S700: the battery 10 is disklesd.
It should be understood that in the embodiment of the present invention, the turntable 301 is first turned to the blanking station 3004, the battery 10 with the injected liquid standing is blanked, and transferred to the jig tray removing station 405 to remove the tray from the battery 10. The discharging sequence and the position of the battery 10 and the corresponding relation with the clamp can be memorized and bound by the program control of the liquid injection machine, so that one-to-one traceability effect is achieved. After the battery 10 is completely disassembled, the battery 10 is transferred to the post-filling code scanning weighing station 406, and the empty jigs are transferred to the jig caching station 404 as a whole.
Step S800: and weighing the post-scanning code.
It should be understood that, in the embodiment of the present invention, the code scanning and weighing station 406 scans and weighs the body of the battery 10 after the liquid is injected, so as to obtain the corresponding data of the battery 10 after the liquid is injected, automatically determine the data by the system, and upload the data to the traceability system for centralized management. And can also discern the judgement to the present state of battery 10 when sweeping the sign indicating number, through NG buffer station 410 that sets up, can reject the defective products to NG buffer station 410, the bad circulation risk of being able to be removed.
In addition, before the battery 10 is weighed, a setting may be made for the weight range of the battery 10, that is, a standard range for defining the weight of the battery 10. This range can be derived from the design of the battery 10 and the standard deviation of the sampling of the battery 10, for example, the weight determination range may be selected to be +.2%, preferably ± 1%. By arranging the NG buffer station 410, defective products can be removed to the NG buffer station 410, the risk of defective circulation is avoided, and the closed loop management of the single cycle of the battery 10 in the liquid injection process is achieved.
Step S900: and (5) post-sealing treatment.
It should be appreciated that in the embodiment of the present invention, the first and second liquid injection holes 101 and 103 on the body of the battery 10 are sealed at the post-processing station 407 first. The sealing means may include a rubber stopper, adhesive paper, or other sealing means to ensure a sealed condition of the battery 10 after it leaves the filling machine.
Step S1000: and (5) discharging and dishing.
It should be appreciated that in embodiments of the present invention, the sealed battery 10 is first palletized at the outfeed palletizer station 408. Or may be monomer flow. Seamless connection of material transfer between the working procedures is carried out according to the feeding mode of the following working procedure, and the whole production smoothness of the battery 10 is improved.
According to the invention, the battery 10 is provided with the double liquid injection holes, so that the flow of the injected electrolyte can be controlled by utilizing the pressure effect between the two liquid injection holes, and the whole coverage of the electrolyte in the battery 10 is realized; by using the rotary table type electrolyte injection production line 30, the electrolyte can be rapidly injected into the battery 10 by vacuumizing the battery 10 and using the formed negative pressure effect, so that the injection time is shortened, and the injected electrolyte can be rapidly permeated into the whole battery 10 by pressurizing; in addition, during the standing process of the battery 10, the first liquid injection hole 101 and the second liquid injection hole 103 are used for respectively vacuumizing and pressurizing the inside of the battery 10, so that the electrolyte injected into the battery 10 forms reciprocating motion in the inside of the battery 10 between the first liquid injection hole 101 and the second liquid injection hole 103, and the absorption efficiency of the electrolyte is accelerated.
Therefore, the method can ensure the accuracy of battery liquid injection, quicken the liquid absorption efficiency of the battery, improve the quality of the battery, reduce the leakage risk, greatly reduce the deformation risk of the battery, and be beneficial to improving the safety of the battery, and the method can simply, conveniently and efficiently realize the continuous production and processing of the lithium battery liquid injection; meanwhile, the method can also ensure the quality of the incoming battery before the liquid injection, confirm the liquid injection effect of the battery and ensure the sealing state of the battery after the liquid injection; and a one-to-one traceable relation can be formed between the battery and the clamp, so that closed-loop management of the state of the battery is realized.
While embodiments of the present invention have been described in detail hereinabove, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. It is to be understood, however, that such modifications and variations are within the scope and spirit of the present invention as defined in the appended claims. Moreover, the invention described herein is capable of other embodiments and of being practiced or of being carried out in various ways.
Claims (6)
1. The lithium battery injection production method is characterized by comprising the following steps of:
step one: arranging a battery to be injected on a feeding station, vacuumizing the interior of the battery to a first vacuum degree through a first injection hole formed in the top surface of the battery, and keeping for a first time;
Step two: the battery is rotated onto a liquid injection station along the rotation center, continuously passes through the first liquid injection hole, and electrolyte is injected into the battery by utilizing pressure difference, wherein the liquid injection time is second time;
step three: pressurizing the interior of the battery to a first pressure through the first liquid injection hole, maintaining for a third time, and then decompressing the battery to normal pressure;
step four: continuously turning the battery to a standing station, vacuumizing the interior of the battery to a second vacuum degree through a second liquid injection hole which is arranged on the battery and is opposite to the first liquid injection hole in the standing process, and keeping for a fourth time;
step five: continuing to pressurize the interior of the battery to a second pressure through the second liquid injection hole and maintaining for a fifth time;
step six: vacuumizing the battery to a third vacuum degree through the first liquid injection hole, and keeping the sixth time;
step seven: continuing to pressurize the interior of the battery to a third pressure through the first liquid injection hole and maintaining for a seventh time;
step eight: continuously transferring the battery to a blanking station, and decompressing the battery to normal pressure;
the first liquid injection hole and the second liquid injection hole are used for respectively vacuumizing and pressurizing the inside of the battery, so that electrolyte injected into the battery forms reciprocating motion in the battery between the first liquid injection hole and the second liquid injection hole, and the absorption efficiency of the electrolyte is accelerated;
Performing one or more times of the steps four to seven in a circulating way;
the first vacuum degree is greater than the second vacuum degree and the third vacuum degree;
the first pressure, the second pressure, and the third pressure are equal.
2. The method for producing a lithium battery injection liquid according to claim 1, further comprising the following steps before the first step:
performing an insulation test on the battery;
weighing the battery before filling the liquid;
performing clamp loading on the battery;
the eighth step further comprises the following steps:
performing disketting on the battery;
weighing the battery after filling the liquid;
sealing the first liquid injection hole and the second liquid injection hole; and
and carrying out discharging and dishing on the battery.
3. The utility model provides a lithium cell annotates liquid mechanism which characterized in that includes:
the first needle head and the second needle head are used for being driven to be respectively connected with a first liquid injection hole and a second liquid injection hole which are arranged at two opposite ends of the top surface of the battery to be injected; the first needle is respectively connected with a liquid injection pipeline, a first vacuum pipeline and a first drying gas pipeline through a first liquid storage cup, the second needle is respectively connected with a second vacuum pipeline and a second drying gas pipeline through a second liquid storage cup, the liquid injection pipeline is connected to a liquid injection pump, the first vacuum pipeline and the second vacuum pipeline are connected to a vacuum source, the first drying gas pipeline and the second drying gas pipeline are connected to a drying gas source, a first valve is arranged on the liquid injection pipeline, a second valve is arranged on the first vacuum pipeline, a third valve is arranged on the first drying gas pipeline, a fourth valve is arranged on the second vacuum pipeline, and a fifth valve is arranged on the second drying gas pipeline;
When the battery sequentially rotates from a feeding station to a liquid injection station and a standing station along the rotation center, electrolyte is injected into the battery under negative pressure by executing different combinations of opening and closing on the first valve to the fifth valve, and vacuumizing and pressurizing are respectively executed on the battery through the first liquid injection hole and the second liquid injection hole, so that the electrolyte forms reciprocating motion in the battery between the first liquid injection hole and the second liquid injection hole, and the absorption efficiency of the electrolyte is accelerated;
the different combinations of opening and closing by performing on the first valve to the fifth valve include:
when the battery is positioned on the feeding station, the second valve is opened, and the first valve, the third valve and the fifth valve are closed, so that the interior of the battery is vacuumized through the first liquid injection hole;
when the battery is positioned on the liquid injection station, electrolyte is injected into the battery through the first liquid injection hole by opening the first valve and closing the second valve to the fifth valve by utilizing the pressure difference;
after the liquid is injected, the third valve is opened, and the first valve, the second valve, the fourth valve, the fifth valve are closed, so that the inside of the battery is pressurized through the first liquid injection hole;
When the battery is positioned on the standing station, firstly, vacuumizing the interior of the battery through the second liquid injection hole by opening the fourth valve and closing the first valve to the third valve and the fifth valve; then, the fifth valve is opened, and the first valve is closed to the four valves, so that the interior of the battery is pressurized through the second liquid injection hole; then, the second valve is opened, and the first valve, the third valve and the fifth valve are closed, so that the inside of the battery is vacuumized through the first liquid injection hole; and then, opening the third valve, and closing the first valve to the second valve and the fourth valve to the fifth valve to pressurize the inside of the battery through the first liquid injection hole.
4. A lithium battery liquid injection production device, comprising the lithium battery liquid injection mechanism of claim 3.
5. The lithium battery injection liquid production device according to claim 4, further comprising:
the rotary table type liquid injection production line is provided with a battery feeding station, a liquid injection station, one to a plurality of standing stations and a discharging station in turn according to the rotary table rotation direction, wherein each station is respectively used for loading the battery, the battery is sequentially circulated among the stations through the rotation of the rotary table, the liquid injection mechanism is arranged above the stations of the rotary table in a one-to-one correspondence manner and driven to synchronously rotate and lift so as to be respectively and hermetically jointed with the first liquid injection hole and the second liquid injection hole on the battery on the feeding station and to be separated from the first liquid injection hole and the second liquid injection hole on the discharging station.
6. The lithium battery injection liquid production device according to claim 5, further comprising:
the circulation production line is positioned at one side of the rotary disc type liquid injection production line and is sequentially provided with a battery incoming material station, an insulation test station, a liquid injection front weighing station, a clamp buffer station, a clamp tray disassembling station, a liquid injection rear weighing station, a post-treatment station and a discharging tray loading station;
the device comprises a charging station, an insulating test station, a liquid injection front weighing station, a liquid injection rear weighing station, a post-treatment station and a defective product buffer station, wherein the clamp buffer station is further arranged between the clamp buffer station and the charging station, the defective product buffer station is further arranged on one side of the insulating test station, the liquid injection front weighing station, the liquid injection rear weighing station and the post-treatment station, and the battery is connected between the liquid injection front weighing station and the clamp tray station through a manipulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205100.2A CN114583418B (en) | 2022-03-02 | 2022-03-02 | Lithium battery liquid injection production method, liquid injection mechanism and liquid injection production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205100.2A CN114583418B (en) | 2022-03-02 | 2022-03-02 | Lithium battery liquid injection production method, liquid injection mechanism and liquid injection production equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114583418A CN114583418A (en) | 2022-06-03 |
| CN114583418B true CN114583418B (en) | 2023-07-04 |
Family
ID=81775832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210205100.2A Active CN114583418B (en) | 2022-03-02 | 2022-03-02 | Lithium battery liquid injection production method, liquid injection mechanism and liquid injection production equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114583418B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115441134B (en) * | 2022-08-16 | 2024-04-05 | 天能新能源(湖州)有限公司 | Liquid injection nozzle for lithium battery production, method for manufacturing micro-arc oxidation coating, preparation method of electrolyte and rapid liquid injection device |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003068276A (en) * | 2001-08-28 | 2003-03-07 | Japan Storage Battery Co Ltd | Battery and battery manufacturing method |
| JP2004247120A (en) * | 2003-02-13 | 2004-09-02 | Matsushita Electric Ind Co Ltd | Electrolyte liquid injection method and electrolyte liquid injection device |
| JP2006260864A (en) * | 2005-03-16 | 2006-09-28 | Hitachi Maxell Ltd | Manufacturing method of lithium secondary battery |
| CN201562708U (en) * | 2009-10-30 | 2010-08-25 | 东莞市鸿宝锂电科技有限公司 | Device for filling lithium battery with electrolyte in vacuuming manner |
| CN104241592A (en) * | 2014-07-25 | 2014-12-24 | 东莞市鸿宝锂电科技有限公司 | Automatic electrolyte injection equipment for batteries |
| CN204668415U (en) * | 2015-06-17 | 2015-09-23 | 宁德时代新能源科技有限公司 | Secondary cell drying and fluid injection integrating device |
| CN106711392A (en) * | 2017-01-08 | 2017-05-24 | 南京国轩电池有限公司 | Electrolyte injecting machine and electrolyte injecting method for battery |
| CN109088042A (en) * | 2018-08-23 | 2018-12-25 | 惠州金源精密自动化设备有限公司 | Battery liquid-filling mechanism and its soft-package battery liquid-injection equipment |
| CN110416485A (en) * | 2019-07-18 | 2019-11-05 | 湖北锂诺新能源科技有限公司 | A kind of the circulation priming device and liquid injection process of lithium battery |
| CN110416445A (en) * | 2019-07-23 | 2019-11-05 | 湖北锂诺新能源科技有限公司 | Diplopore lithium ion cover board and its rocking chair type priming device and method |
| CN113161656A (en) * | 2021-04-14 | 2021-07-23 | 湖北亿纬动力有限公司 | Battery cover plate, cover plate and battery liquid injection method |
| CN214672866U (en) * | 2021-03-08 | 2021-11-09 | 上海兰钧新能源科技有限公司 | Battery cell shell, secondary battery cell and battery pack |
| CN114122641A (en) * | 2021-12-22 | 2022-03-01 | 惠州市成泰自动化科技有限公司 | Liquid machine is annotated to carousel formula |
-
2022
- 2022-03-02 CN CN202210205100.2A patent/CN114583418B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003068276A (en) * | 2001-08-28 | 2003-03-07 | Japan Storage Battery Co Ltd | Battery and battery manufacturing method |
| JP2004247120A (en) * | 2003-02-13 | 2004-09-02 | Matsushita Electric Ind Co Ltd | Electrolyte liquid injection method and electrolyte liquid injection device |
| JP2006260864A (en) * | 2005-03-16 | 2006-09-28 | Hitachi Maxell Ltd | Manufacturing method of lithium secondary battery |
| CN201562708U (en) * | 2009-10-30 | 2010-08-25 | 东莞市鸿宝锂电科技有限公司 | Device for filling lithium battery with electrolyte in vacuuming manner |
| CN104241592A (en) * | 2014-07-25 | 2014-12-24 | 东莞市鸿宝锂电科技有限公司 | Automatic electrolyte injection equipment for batteries |
| CN204668415U (en) * | 2015-06-17 | 2015-09-23 | 宁德时代新能源科技有限公司 | Secondary cell drying and fluid injection integrating device |
| CN106711392A (en) * | 2017-01-08 | 2017-05-24 | 南京国轩电池有限公司 | Electrolyte injecting machine and electrolyte injecting method for battery |
| CN109088042A (en) * | 2018-08-23 | 2018-12-25 | 惠州金源精密自动化设备有限公司 | Battery liquid-filling mechanism and its soft-package battery liquid-injection equipment |
| CN110416485A (en) * | 2019-07-18 | 2019-11-05 | 湖北锂诺新能源科技有限公司 | A kind of the circulation priming device and liquid injection process of lithium battery |
| CN110416445A (en) * | 2019-07-23 | 2019-11-05 | 湖北锂诺新能源科技有限公司 | Diplopore lithium ion cover board and its rocking chair type priming device and method |
| CN214672866U (en) * | 2021-03-08 | 2021-11-09 | 上海兰钧新能源科技有限公司 | Battery cell shell, secondary battery cell and battery pack |
| CN113161656A (en) * | 2021-04-14 | 2021-07-23 | 湖北亿纬动力有限公司 | Battery cover plate, cover plate and battery liquid injection method |
| CN114122641A (en) * | 2021-12-22 | 2022-03-01 | 惠州市成泰自动化科技有限公司 | Liquid machine is annotated to carousel formula |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114583418A (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201562708U (en) | Device for filling lithium battery with electrolyte in vacuuming manner | |
| CN114583418B (en) | Lithium battery liquid injection production method, liquid injection mechanism and liquid injection production equipment | |
| CN105471199B (en) | Rotor assembling device | |
| CN104036976B (en) | Automatic impregnating machine | |
| CN102354768A (en) | Vacuum air-suction sealing, trimming and folding all-in-one machine and battery production technology | |
| CN208806322U (en) | A kind of two envelope packaging system of rectangular cell multistation | |
| CN210789868U (en) | Base station antenna guide piece assembling machine | |
| CN108110203B (en) | Full-automatic liquid injection machine | |
| CN109319715A (en) | A kind of refrigerant automation filling production lines and its packaging process | |
| CN112326144A (en) | Fuel cell stack leakage detection equipment | |
| CN218755934U (en) | Cam induction quenching equipment of assembled camshaft | |
| CN208198018U (en) | A kind of dress tire inflating all-in-one machine | |
| CN108682781A (en) | The full-automatic soft package lithium battery filling machine of rotating disc type | |
| CN109088042B (en) | Battery liquid injection mechanism and soft package battery liquid injection equipment thereof | |
| CN112520397A (en) | Water pump guide vane opening ring feeding device | |
| CN109216644B (en) | Automatic lithium battery liquid injection system | |
| CN108063213A (en) | Battery core priming device and its full-automatic filling machine | |
| CN105118701B (en) | Automatic contain dipping machine | |
| CN208478166U (en) | A kind of capacitor liquid injection device | |
| CN215747687U (en) | Medical valve assembling machine | |
| CN110740608A (en) | automatic installation equipment for PCB (printed circuit board) of small battery pack | |
| JP3928188B2 (en) | Battery electrolyte supply method and apparatus | |
| CN216698082U (en) | Automatic gum pasting device for magnetic core | |
| JP4057674B2 (en) | Battery manufacturing apparatus and battery manufacturing method | |
| CN212330297U (en) | Automatic filter assembling equipment |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |