CN105355836A - Liquid injection method of power lithium battery and liquid-injection glove box thereof - Google Patents
Liquid injection method of power lithium battery and liquid-injection glove box thereof Download PDFInfo
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- CN105355836A CN105355836A CN201510792382.0A CN201510792382A CN105355836A CN 105355836 A CN105355836 A CN 105355836A CN 201510792382 A CN201510792382 A CN 201510792382A CN 105355836 A CN105355836 A CN 105355836A
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- Prior art keywords
- fluid injection
- battery
- lithium battery
- glove box
- injection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Filling, Topping-Up Batteries (AREA)
- Secondary Cells (AREA)
Abstract
A disclosed liquid injection method of a power lithium battery comprises the following steps: (1) welding one end of a battery tab at the center of a pole piece, and welding the other end under a cover cap; (2) putting the welded battery in a liquid-injection glove box for first weighing; (3) repeatedly performing liquid injection on the battery by using a liquid injection needle, and vacuumizing every time after liquid injection is finished; (4) performing secondary weighing on the battery subjected to repeated liquid injection; (5) supplementing an electrolyte into the battery; and (6) manually bending the tab so as to press the cover cap on a battery pipe, and then discharging the battery. The invention also discloses a liquid-injection glove box applied to the above liquid injection method of the power lithium battery. By employing the method of firstly performing liquid injection and then performing vacuumizing, the liquid injection efficiency, the liquid injection qualified rate and the liquid injection precision of the lithium battery are improved.
Description
Technical field
The present invention relates to a kind of electrolyte filling method and fluid injection glove box thereof of lithium battery.
Background technology
It is high that lithium battery has specific energy, and self-discharge rate is low, and high temperature performance is good and the discharge and recharge life-span is long, the features such as memory-less effect.Be widely used at present on the products such as mobile phone, notebook computer, digital camera, electric motor car, electric tool and new-energy automobile.Current most of producer is when injecting electrolyte to battery, all completed by following flow process: vacuumize → quantitative liquid-filling → pressurization → battery discharge, this fluid injection mode is telescopic fluid injection mode, waste is a large amount of artificial, production efficiency is lower, easy generation sleeve side leakage equivalent risk, what adopt due to this fluid injection mode is quantitative liquid-filling simultaneously, the reservoir quantity of each fluid injection is identical, then fluid injection number of times is more, more to below, the absorption of battery to electrolyte is more next difficult, electrolyte is caused easily to enter in vacuum system, cause the waste of electrolyte, also liquid-injection equipment can be corroded, improve production cost.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the first object of the present invention is to provide a kind of electrolyte filling method of dynamic lithium battery.
To achieve these goals, the electrolyte filling method of a kind of dynamic lithium battery designed by the present invention, comprises the following steps:
(1), be welded in the middle of pole piece by battery pole ear one end, the other end is welded in block below;
(2), the battery welded is put into fluid injection glove box to carry out first time and weigh;
(3), by injection needle repeatedly fluid injection is carried out to battery, vacuumize after having noted liquid at every turn;
(4) battery, repeatedly after fluid injection carries out second time and weighs;
(5), supplementary electrolyte is carried out to battery;
(6), artificial bending lug makes block be pressed on cell tube, then discharges battery.
Further, in above-mentioned steps (3), after vacuumizing, pressurize is carried out.
Further, the reservoir quantity of above-mentioned repeatedly fluid injection successively decreases successively.
The second object of the present invention is to provide a kind of for the fluid injection glove box in above-mentioned dynamic lithium battery electrolyte filling method, comprise casing, before and after described casing, both sides are equipped with form, some glove ports are provided with below described form, two ends, described casing left and right are respectively equipped with discharging opening and charging aperture, turn left from the right side in described casing and be provided with charging buffer area successively, first Weighing Area, first fluid injection district, material buffer area, second Weighing Area, second fluid injection district and discharging buffer area, two horizontally disposed transport tapes are provided with in described first fluid injection district, described two transport tape traffic directions are contrary, transport tape on rear side of the casing is turned left transmission, and turning left from the right side above it, it is some to priming device and vacuum extractor to be provided with successively, described priming device comprises some injection needle be connected with fluid reservoir, described injection needle is all fixed on a fixed leg, described fixed leg and left and right cylinders, thus fixed leg can be moved left and right, the described case apparatus that vacuumizes comprises vacuum tank, described vacuum tank is connected with vacuum pumping pump, described vacuum tank is connected with the first upper and lower air cylinders, thus make to vacuumize case and can move up and down, described second fluid injection district is provided with cell fixing device, also an injection needle be connected with fluid reservoir is provided with above described cell fixing device, described first Weighing Area and the second Weighing Area are equipped with weighing device, described casing is also provided with control device, this control device and weighing device, first upper and lower air cylinders, left and right cylinders.
Preferably, described cell fixing device is a fixing hole suitable with battery.
Preferably, isolation sliding door is provided with between described material buffer area and the first fluid injection district.
Preferably, described charging aperture right-hand member and discharging opening left end are all connected with transitional storehouse, described transitional storehouse left and right both ends open, driving-belt is provided with in described transitional storehouse, described transitional storehouse is provided with screen away from casing one end, described charging aperture and discharging opening are equipped with door moving up and down, and described door is connected with the second upper and lower air cylinders, and described second upper and lower air cylinders is connected with control device.
Preferably, described form is toughened glass, inside posts PET corrosion-resisting protective film.
The electrolyte filling method of a kind of dynamic lithium battery that the present invention obtains and fluid injection glove box thereof, its technique effect is: 1, by taking out genuine method after first fluid injection, can improve the fluid injection efficiency of lithium battery, fluid injection qualification rate and fluid injection precision; 2, adopt injection needle to carry out direct fluid injection to cell tube, no longer adopt sleeve, not only can improve fluid injection efficiency, but also sleeve side leakage equivalent risk can be stopped; 3, first by tab welding pole piece with block on, carry out the injection of electrolyte again, pollution to electrolyte when can avoid tab welding, ensure the quality of battery, and welding operation is also more convenient, and after having noted liquid, block gland is discharged on cell tube in fluid injection glove box again, be conducive to reducing electrolyte and extraneous contact, ensure the quality of battery further; 4, tab welding is in the centre position of pole piece, can reduce cell integrated internal resistance, promotes the overall performance of battery; 5, reservoir quantity takes the mode of successively decreasing gradually, the absorption of battery to electrolyte can be improved, even if the battery of high power capacity, difficult absorption system makes get up also to become very convenient, but also the waste of electrolyte can be reduced, reduce the corrosion to liquid-injection equipment, reduce production cost; 6, gloves liquid injecting box adopts the transport tape that two different directions run in the first fluid injection district, can enhance productivity; 7, transitional storehouse and door are set at feed inlet and outlet, improve the stability of the humiture of fluid injection glove box, ensure that battery quality in process of production.
Accompanying drawing explanation
Fig. 1 is the body structure schematic diagram of fluid injection glove box in the present invention.
Fig. 2 is the partial structurtes schematic diagram in the first fluid injection district in the present invention.
Fig. 3 is the structural representation of cell fixing device in the present invention.
Fig. 4 is the reservoir quantity distribution map adopting electrolyte filling method of the present invention.
Fig. 5 is the reservoir quantity distribution map adopting sleeve electrolyte filling method.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As Figure 1-3, a kind of fluid injection glove box for dynamic lithium battery fluid injection provided by the invention, comprise casing 1, before and after casing, both sides are equipped with form 2, some glove ports 3 are provided with below form, two ends, casing left and right are respectively equipped with discharging opening and charging aperture, turn left from the right side in casing and be provided with charging buffer area 4 successively, first Weighing Area 5, first fluid injection district 6, material buffer area 7, second Weighing Area 8, second fluid injection district 9 and discharging buffer area 10, two horizontally disposed transport tapes 11 are provided with in first fluid injection district, article two, transport tape traffic direction is contrary, transport tape on rear side of the casing is turned left transmission, and turning left from the right side above it, it is some to priming device and vacuum extractor to be provided with successively, priming device comprises some injection needle 12 be connected with fluid reservoir, injection needle is all fixed on a fixed leg 13, fixed leg is connected with left and right cylinder 14, thus fixed leg can be moved left and right, vacuumize case apparatus and comprise vacuum tank 15, vacuum tank is connected with vacuum pumping pump, vacuum tank is connected with the first upper and lower air cylinders 16, thus make to vacuumize case and can move up and down, second fluid injection district is provided with cell fixing device 17, also an injection needle be connected with fluid reservoir is provided with above cell fixing device, first Weighing Area and the second Weighing Area are equipped with weighing device, casing is also provided with control device, this control device and weighing device, first upper and lower air cylinders, left and right cylinders.Wherein, weighing device belongs to prior art, does not repeat them here.
Lithium battery in the present embodiment is cylindric, and therefore cell fixing device is a circular fixation hole 18 suitable with battery.
Be provided with between material buffer area and the first fluid injection district and isolate sliding door 19, the humiture stability in the first fluid injection district can be improved.
Charging aperture right-hand member and discharging opening left end are all connected with transitional storehouse 20, transitional storehouse left and right both ends open, driving-belt is provided with in transitional storehouse, transitional storehouse is provided with screen away from casing one end, charging aperture and discharging opening are equipped with door 21 moving up and down, door is connected with the second upper and lower air cylinders, and the second upper and lower air cylinders is connected with control device.By the door of the screen on transitional storehouse, transitional storehouse and feed inlet and outlet, the humiture stability in fluid injection glove box is further enhanced
In the present embodiment, form 2 is toughened glass, inside posts PET corrosion-resisting protective film.
First battery pole ear one end is welded in the middle of pole piece, the other end is welded in block below, the battery welded is put into fluid injection glove box by charging aperture, in order to improve working (machining) efficiency, a collection of puts into charging buffer area by the cell tube welded, then cell tube is put on the weighing device of the first Weighing Area 5 by glove ports by operating personnel, and the weight claimed is formed Signal transmissions to control device, then orderly for the cell tube weighing up weight is put on pallet, pallet is provided with some pallet fixing holes suitable with cell tube, and on pallet fixing hole, carry out order mark, then the pallet filling cell tube is put on the transport tape in the first fluid injection district on rear side of casing, fixed leg moves left and right under the effect of left and right cylinder, fluid injection is carried out to the cell tube of each row.On pallet, the pallet fixing hole number of each row can be equal with the number of the injection needle on fixed leg, also can be the integral multiple of injection needle number, and during integral multiple, fixed leg moves around before and after needing, and ensures to carry out fluid injection to each cell tube.
After having noted liquid, pallet side of turning left on transport tape moves a certain distance, come below vacuum extractor, vacuum tank moves down under the effect of the first upper and lower air cylinders, whole pallet is located in vacuum tank, then vacuumize, pressurize a period of time again, then the first upper and lower air cylinders drives vacuum tank up to move, simultaneously when vacuumizing, other a collection of cell tube enters the first fluid injection district and carries out first time fluid injection, cell tube after first time vacuumizes moves to below next priming device and carries out the second fluid injection, repeatedly, the cell tube having noted electrolyte is put in material storage area, pallet is put into transports the first Weighing Area back on the transport tape of cabinet front, for the putting of cell tube of another batch, the cell tube having noted liquid is put in the second Weighing Area it is weighed, weighing device will take weight is transferred on control device, then the second weighed cell tube is put on the fixing hole in the second fluid injection district, fixing hole is provided with induction installation, when induction installation has sensed that cell tube is put into, second time the weighed weight that obtains and first time the weigh difference of the weight obtained and the electrolyte content of theoretical demand of control device compares, during certain limit lower than the electrolyte content of theoretical demand, the injection needle that control device controls the second fluid injection district carries out supplementary electrolyte to cell tube, after supplementing good electrolyte, cell tube is positioned over discharging buffer area, lug is carried out bending by operating personnel, make block gland on cell tube, then discharged by discharging opening.
Wherein, in the repeatedly injection process in the first fluid injection district, after reservoir quantity once fewer than previous reservoir quantity, setting like this, the absorption of battery to electrolyte can be improved, when first time fluid injection, owing to there is no liquid in cell tube, uptake is maximum, more arrive and be more difficult to below absorb, adopt the mode of the reservoir quantity that successively decreases than all measuring or quantitative liquid-filling, there are better absorbent properties, and the waste of electrolyte can be reduced, reduce production cost.
In the present embodiment, the dynamic lithium battery of 2000MAH be produced, battery pole ear one end is welded in the middle of pole piece, cell integrated internal resistance decline 2m Ω can be made, the overall performance of battery can be promoted further.Then distinguish 4 fluid injections in the first fluid injection, each reservoir quantity is respectively 1.45g, 1.40g, 1.30g, 1.15g, compared with the 5.30g of theoretical demand, do not need to supplement electrolyte in the second fluid injection district, in the fluid injection in the first fluid injection district success, fluid injection efficiency can be improve.The present inventor draws through a large amount of experimental summaries, often adjacent twice reservoir quantity the fluid injection best results of difference when being arithmetic progression.
The present inventor has carried out a large amount of experiments to the fluid injection of this 2000MAH dynamic lithium battery and has drawn, compared with adopting the electrolyte filling method in the present invention and originally adopting the method for sleeve fluid injection, adopt the reservoir quantity of the cell tube of the electrolyte filling method fluid injection in the present invention more stable, closer to theoretical value, it is also less that electrolyte is wasted, reservoir quantity is normal distribution, as shown in Figure 4,5.
Claims (8)
1. an electrolyte filling method for dynamic lithium battery, is characterized in that, comprises the following steps:
(1), be welded in the middle of pole piece by battery pole ear one end, the other end is welded in block below;
(2), the battery welded is put into fluid injection glove box to carry out first time and weigh;
(3), by injection needle repeatedly fluid injection is carried out to battery, vacuumize after having noted liquid at every turn;
(4) battery, repeatedly after fluid injection carries out second time and weighs;
(5), supplementary electrolyte is carried out to battery;
(6), artificial bending lug makes block be pressed on cell tube, then discharges battery.
2. the electrolyte filling method of dynamic lithium battery according to claim 1, is characterized in that: in above-mentioned steps (3), carry out pressurize after vacuumizing.
3. the electrolyte filling method of dynamic lithium battery according to claim 1, is characterized in that: the reservoir quantity of above-mentioned repeatedly fluid injection successively decreases successively.
4. one kind for the fluid injection glove box in the arbitrary described dynamic lithium battery electrolyte filling method of claim 1-3, comprise casing, before and after described casing, both sides are equipped with form, some glove ports are provided with below described form, two ends, described casing left and right are respectively equipped with discharging opening and charging aperture, it is characterized in that: turning left from the right side in described casing is provided with charging buffer area successively, first Weighing Area, first fluid injection district, material buffer area, second Weighing Area, second fluid injection district and discharging buffer area, two horizontally disposed transport tapes are provided with in described first fluid injection district, described two transport tape traffic directions are contrary, transport tape on rear side of the casing is turned left transmission, and turning left from the right side above it, it is some to priming device and vacuum extractor to be provided with successively, described priming device comprises some injection needle be connected with fluid reservoir, described injection needle is all fixed on a fixed leg, described fixed leg and left and right cylinders, thus fixed leg can be moved left and right, the described case apparatus that vacuumizes comprises vacuum tank, described vacuum tank is connected with vacuum pumping pump, described vacuum tank is connected with the first upper and lower air cylinders, thus make to vacuumize case and can move up and down, described second fluid injection district is provided with cell fixing device, also an injection needle be connected with fluid reservoir is provided with above described cell fixing device, described first Weighing Area and the second Weighing Area are equipped with weighing device, described casing is also provided with control device, this control device and weighing device, first upper and lower air cylinders, left and right cylinders.
5. according to claim 4 for the fluid injection glove box in dynamic lithium battery electrolyte filling method, it is characterized in that: described cell fixing device is a fixing hole suitable with battery.
6. according to claim 4 for the fluid injection glove box in dynamic lithium battery electrolyte filling method, it is characterized in that: between described material buffer area and the first fluid injection district, be provided with isolation sliding door.
7. according to claim 4 for the fluid injection glove box in dynamic lithium battery electrolyte filling method, it is characterized in that: described charging aperture right-hand member and discharging opening left end are all connected with transitional storehouse, described transitional storehouse left and right both ends open, driving-belt is provided with in described transitional storehouse, described transitional storehouse is provided with screen away from casing one end, described charging aperture and discharging opening are equipped with door moving up and down, and described door is connected with the second upper and lower air cylinders, and described second upper and lower air cylinders is connected with control device.
8. according to claim 4 for the fluid injection glove box in dynamic lithium battery electrolyte filling method, it is characterized in that: described form is toughened glass, inside post PET corrosion-resisting protective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510792382.0A CN105355836B (en) | 2015-11-18 | 2015-11-18 | The electrolyte filling method and its fluid injection glove box of a kind of dynamic lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510792382.0A CN105355836B (en) | 2015-11-18 | 2015-11-18 | The electrolyte filling method and its fluid injection glove box of a kind of dynamic lithium battery |
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| CN105355836A true CN105355836A (en) | 2016-02-24 |
| CN105355836B CN105355836B (en) | 2018-03-30 |
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| CN201510792382.0A Expired - Fee Related CN105355836B (en) | 2015-11-18 | 2015-11-18 | The electrolyte filling method and its fluid injection glove box of a kind of dynamic lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129417A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | Manufacturing method of soft package battery |
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| CN201608227U (en) * | 2010-01-29 | 2010-10-13 | 中航锂电（洛阳）有限公司 | Lithium-ion battery liquid injection device |
| CN102148349A (en) * | 2011-03-04 | 2011-08-10 | 深圳市吉阳自动化科技有限公司 | Automatic filling machine for battery and battery filling method |
| CN202474087U (en) * | 2011-11-30 | 2012-10-03 | 凯迈（江苏）机电有限公司 | Glove box for lithium battery sealing and injecting |
| CN203326021U (en) * | 2013-05-20 | 2013-12-04 | 深圳市海得地实业有限公司 | Fully-automatic battery liquid injection device |
| CN103474615A (en) * | 2013-09-06 | 2013-12-25 | 奇瑞汽车股份有限公司 | Filling glove box |
-
2015
- 2015-11-18 CN CN201510792382.0A patent/CN105355836B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608227U (en) * | 2010-01-29 | 2010-10-13 | 中航锂电（洛阳）有限公司 | Lithium-ion battery liquid injection device |
| CN102148349A (en) * | 2011-03-04 | 2011-08-10 | 深圳市吉阳自动化科技有限公司 | Automatic filling machine for battery and battery filling method |
| CN202474087U (en) * | 2011-11-30 | 2012-10-03 | 凯迈（江苏）机电有限公司 | Glove box for lithium battery sealing and injecting |
| CN203326021U (en) * | 2013-05-20 | 2013-12-04 | 深圳市海得地实业有限公司 | Fully-automatic battery liquid injection device |
| CN103474615A (en) * | 2013-09-06 | 2013-12-25 | 奇瑞汽车股份有限公司 | Filling glove box |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129417A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | Manufacturing method of soft package battery |
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