CN106159188B - Through type liquid injection method and device for lithium ion battery - Google Patents
Through type liquid injection method and device for lithium ion battery Download PDFInfo
- Publication number
- CN106159188B CN106159188B CN201610798929.2A CN201610798929A CN106159188B CN 106159188 B CN106159188 B CN 106159188B CN 201610798929 A CN201610798929 A CN 201610798929A CN 106159188 B CN106159188 B CN 106159188B
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- liquid injection
- ion battery
- injection hole
- battery
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- 238000002347 injection Methods 0.000 title claims abstract description 89
- 239000007924 injection Substances 0.000 title claims abstract description 89
- 239000007788 liquid Substances 0.000 title claims abstract description 81
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 61
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000003792 electrolyte Substances 0.000 claims abstract description 48
- 239000012530 fluid Substances 0.000 claims description 28
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention provides a through type liquid injection method and a through type liquid injection device for a lithium ion battery, wherein the through type liquid injection method comprises the following steps of forming two liquid injection holes in a cover plate of the lithium ion battery; connecting two liquid injection holes on the lithium ion battery with an electrolyte tank and a vacuum pump respectively for vacuumizing and injecting liquid; the vacuumizing operation and the liquid injection operation of the lithium ion battery are simultaneously carried out, when the liquid injection amount meets the requirement, the electrolyte tank is closed, the battery is continuously vacuumized for 10-60s, and micro bubbles in the lithium ion battery are discharged, so that the liquid injection efficiency of the battery can be improved, and the liquid injection quality of the battery can be ensured.
Description
Technical field
The present invention relates to a kind of lithium ion battery liquid injection technologies, and in particular to a kind of through electrolyte filling method of lithium ion battery
And device.
Background technology
The fluid injection technology of lithium ion battery is influence lithium ion battery mass production, battery performance and cost control one
A key factor.Currently, lithium ion battery liquid injection principle mostly uses negative pressure self-suction fluid injection mode, i.e., will be inhaled inside battery case
At negative pressure, battery case is connect with pipeline with electrolyte, makes to form gas between the spaces with electrolyte inside battery case
Pressure difference is automatically drawn into using the air pressure official post electrolyte inside battery case, and automatic fluid injection is completed.General full-automatic fluid injection is set
It is standby to use automation（PLC）Control, can position battery case and liquid injection module, accurately control reservoir quantity, automatically control workbench
Lifting, the switch of valve, the height of negative-pressure vacuum degree, reservoir quantity number etc., this reduces labor intensity, improve
Production efficiency.But negative pressure self-suction electrolyte filling method is higher to the vacuum level requirements of liquid-injection equipment, and since only there are one fluid injections
Hole, it is desirable that first to battery vacuum-pumping, then fluid injection, and bubble is easy tod produce in the inside of battery (the especially quadrangle of battery),
Therefore battery liquid-filling efficiency and quality cannot be guaranteed.
Invention content
In order to overcome existing liquid-injection equipment technical deficiency, the present invention provide a kind of through electrolyte filling method of lithium ion battery and
Device.
A kind of through electrolyte filling method of lithium ion battery comprising following steps：
（1）Two liquid injection holes are opened up on the cover board of lithium ion battery；
（2）Two liquid injection holes on lithium ion battery are connect with electrolyte tank respectively, vacuum pump connection vacuumizes
And fluid injection；
（3）When reservoir quantity is met the requirements, electrolyte tank is first closed, vacuum pump works on 10-60s, lithium ion is discharged
The microbubble of inside battery.
Two liquid injection holes of several lithium ion batteries are together in parallel by connecting tube, are then divided again by further scheme
It is not connect with electrolyte tank, vacuum pump, is carried out at the same time and vacuumizes and fluid injection.
Further scheme is respectively equipped with flowmeter between liquid injection hole and electrolyte tank, liquid injection hole and vacuum pump, passes through stream
Difference obtains current reservoir quantity on gauge.
Another goal of the invention of the present invention, which is to provide, realizes a kind of above-mentioned dress of the through electrolyte filling method of lithium ion battery
It sets, including lithium ion battery and electrolyte tank, left liquid injection hole and right liquid injection hole, institute is offered on the cover board of the lithium ion battery
It states left liquid injection hole to connect with electrolyte tank by inlet tube, right liquid injection hole is connect by outlet tube with vacuum pump；The inlet tube
On be equipped with liquid feed valve successively, into flow meters, be equipped with out flow meters and liquid valve successively on outlet tube.
Further scheme is equipped with surge tank between the liquid valve and vacuum pump, the surge tank is equipped with liquid level tube, delays
It rushes tank bottom end outlet and is equipped with tapping valve.
Further scheme, the inlet tube with by the left connection in parallel of the left liquid injection hole progress on several lithium ion batteries
Pipe connects, and the arrival end of the left liquid injection hole of each lithium ion battery is equipped with left control valve；The outlet tube with by several lithiums
Right liquid injection hole on ion battery carries out right connecting tube connection in parallel, and the outlet end of the right liquid injection hole of each lithium ion battery is equal
Equipped with right control valve.
The present invention carries out fluid injection using the through injection process of negative pressure to multiple batteries, and by tool, there are two the batteries of liquid injection hole to lead to
Pipeline " parallel connection " connection is crossed, " parallel connection " one end is connect with electrolyte tank afterwards, the other end and vacuum pump are connected, and set in piping connection
The occurrence of having control valve and flowmeter, ensure that the reservoir quantity in each battery is consistent, being noted without few note and leakage.In fluid injection
When, after opening vacuum pump, first inside battery is vacuumized, then electrolyte can enter inside battery along pipeline, in this way
Vacuum pumping and the fluid injection operation of battery can be carried out at the same time, easy to operate and do not need to change connecting tube, greatly reduce note
The liquid time.When reservoir quantity is met the requirements in battery, corresponding control valve is closed, and battery is continued to vacuumize 10-60s, it will be electric
The discharge of internal microbubble, thereby may be ensured that the fluid injection quality of battery in pond.
Electrolyte filling method using the present invention can improve the fluid injection efficiency of battery and ensure the fluid injection quality of battery.In addition,
The excess electrolyte and gas of inside battery are collected in surge tank, wherein gas is discharged by vacuum pump, and electrolyte is received
Collection is reused in surge tank.So the present invention is a kind of continuous fluid injection, fluid injection is efficient and electrolyte is without waste
Efficient fluid injection technology.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is schematic structural view of the invention,
Fig. 2 is lithium ion battery structure schematic diagram in the present invention.
In figure：1- electrolyte tanks, 2- inlet tubes, 3- liquid feed valves, the left connecting tubes of 4-, the left control valves of 5-, 6- into flow meters,
7- lithium ion batteries, the left liquid injection ports of 7-1, the right liquid injection ports of 7-2,8- go out flow meters, the right control valves of 9-, the right connecting tubes of 10-, 11-
Liquid valve, 12- outlet tubes, 13- surge tanks, 13-1 liquid level tubes, 13-2 tapping valves, 14- vacuum pumps.
Specific implementation mode
Embodiment 1：Fluid injection is carried out to single battery：
（1）Two liquid injection holes are opened up on the cover board of lithium ion battery；
（2）Two liquid injection holes on lithium ion battery are connect with electrolyte tank respectively, vacuum pump connection vacuumizes
And fluid injection；
（3）It is respectively equipped with flowmeter between liquid injection hole and electrolyte tank, liquid injection hole and vacuum pump, by poor on flowmeter
Value obtains the current reservoir quantity of lithium ion battery；When reservoir quantity is met the requirements, electrolyte tank is first closed, vacuum pump works on
10s, the microbubble of inside lithium ion cell is discharged.
Further scheme is respectively equipped with flowmeter in the left and right connecting tube, is calculated by difference on flowmeter current
Reservoir quantity.
Embodiment 2：Fluid injection is carried out to multiple batteries：
（1）Two liquid injection holes are opened up on the cover board of lithium ion battery；
（2）Two liquid injection holes of multiple lithium ion batteries are together in parallel by connecting tube, then again respectively with electrolyte
Tank, vacuum pump connection, are carried out at the same time and vacuumize and fluid injection；
（3）Two liquid injection holes on lithium ion battery are connect with electrolyte tank respectively, vacuum pump connection vacuumizes
And fluid injection；
（4）It is respectively equipped with flowmeter between liquid injection hole and electrolyte tank, liquid injection hole and vacuum pump, by poor on flowmeter
Value obtains the current reservoir quantity of lithium ion battery；When reservoir quantity is met the requirements, electrolyte tank is first closed, vacuum pump works on
60s, the microbubble of inside lithium ion cell is discharged.
Embodiment 3：
As shown in Figure 1, a kind of through priming device of lithium ion battery, including lithium ion battery 7 and electrolyte tank 1, institute
It states and offers left liquid injection hole 7-1 and right liquid injection hole 7-2 on the cover board of lithium ion battery 7, the left liquid injection hole 7-1 passes through inlet tube
2 connect with electrolyte tank 1, and right liquid injection hole 7-2 is connect by outlet tube 12 with vacuum pump 14；It is equipped with successively on the inlet tube 2
Liquid feed valve 3, into flow meters 6, be equipped with out flow meters 8 and liquid valve 11 successively on outlet tube 12.
Further scheme, is equipped with surge tank 13 between the liquid valve 11 and vacuum pump 14, the surge tank 13 is equipped with
Liquid level tube 13-1,13 bottom end outlet of surge tank are equipped with tapping valve 13-2.
Further scheme, the inlet tube 2 are in parallel with by the left liquid injection hole 7-1 progress on several lithium ion batteries 7
Left connecting tube 4 connects, and the arrival end of the left liquid injection hole 7-1 of each lithium ion battery 7 is equipped with left control valve 5；The outlet tube
12 connect with the right connecting tube 10 that the right liquid injection hole 7-2 on several lithium ion batteries 7 is carried out to parallel connection, each lithium ion battery
The outlet end of 7 right liquid injection hole 7-2 is equipped with right control valve 9.
Inlet tube 2, outlet tube 12, left connecting tube 4, right connecting tube 10 are hose.
It should ensure that liquid feed valve 3, left control valve 5, right control valve 9 and liquid valve 11 are opened when battery liquid-filling, make electrolyte
Tank 1, lithium ion battery 7, surge tank 13 and vacuum pump 14 keep breakthrough status.Vacuum pump 14 is opened, it first will be in lithium ion battery 7
The gas in portion is extracted out, at this point, due to pressure difference, is had electrolyte and is flowed in lithium ion battery 7 from electrolyte tank 1.Lithium-ion electric
Two flowmeters on the left liquid injection hole 7-1 and right liquid injection hole 7-2 in pond 7 indicate flow of electrolyte respectively, can be calculated by difference
The reservoir quantity for going out battery, when lithium ion battery 7 reaches reservoir quantity, first close liquid feed valve 3, vacuum pump 14 work on one section when
Between to be discharged the microbubble inside lithium ion battery 7, ensure 7 fluid injection quality of lithium ion battery.Lithium ion battery 7 uses " parallel connection "
Connection type makes each battery not interfere with each other while fluid injection, ensures to improve fluid injection efficiency while battery liquid-filling quality.Note
When liquid, excess electrolyte and gas inside lithium ion battery 7 are collected in surge tank 13, wherein gas passes through vacuum pump
14 discharges, electrolyte are collected in surge tank 15, can observe electrolyte in surge tank by the liquid level tube 13-1 in surge tank
Interior position can be discharged by leakage fluid dram 13-2 when excessive, electrolyte is enable to continue with.
The foregoing is merely the preferred embodiment of patent of the present invention, practical range not for the purpose of limiting the invention；It is i.e. all
The various equivalents that right under this invention is done, are scope of the presently claimed invention.
Claims (3)
1. a kind of through electrolyte filling method of lithium ion battery, it is characterised in that：Include the following steps：
（1）Two liquid injection holes are opened up on the cover board of lithium ion battery；
（2）Two liquid injection holes of several lithium ion batteries are together in parallel by connecting tube, then again respectively with electrolyte tank,
Vacuum pump connects, and is carried out at the same time and vacuumizes and fluid injection；It is respectively equipped between liquid injection hole and electrolyte tank, liquid injection hole and vacuum pump
Flowmeter obtains current reservoir quantity by difference on flowmeter；
（3）When reservoir quantity is met the requirements, electrolyte tank is first closed, vacuum pump works on 10-60s, lithium ion battery is discharged
Internal microbubble.
2. a kind of realizing a kind of device of the through electrolyte filling method of lithium ion battery as described in claim 1, including lithium ion
Battery（7）And electrolyte tank（1）, it is characterised in that：The lithium ion battery（7）Cover board on offer left liquid injection hole（7-1）
With right liquid injection hole（7-2）, the left liquid injection hole（7-1）Pass through inlet tube（2）With electrolyte tank（1）Connection, right liquid injection hole（7-2）
Pass through outlet tube（12）With vacuum pump（14）Connection；The inlet tube（2）On successively be equipped with liquid feed valve（3）, into flow meters
（6）, outlet tube（12）On be equipped with out flow meters successively（8）And liquid valve（11）；The inlet tube（2）With by several lithiums from
Sub- battery（7）On left liquid injection hole（7-1）Carry out left connecting tube in parallel（4）Connection, each lithium ion battery（7）Left fluid injection
Hole（7-1）Arrival end be equipped with left control valve（5）；The outlet tube（12）With by several lithium ion batteries（7）On the right side
Liquid injection hole（7-2）Carry out right connecting tube in parallel（10）Connection, each lithium ion battery（7）Right liquid injection hole（7-2）Outlet
End is equipped with right control valve（9）.
3. the apparatus of claim 2, it is characterised in that：The liquid valve（11）And vacuum pump（14）Between be equipped with it is slow
Rush tank（13）, the surge tank（13）It is equipped with liquid level tube（13-1）, surge tank（13）Bottom end outlet is equipped with tapping valve（13-2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798929.2A CN106159188B (en) | 2016-08-31 | 2016-08-31 | Through type liquid injection method and device for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798929.2A CN106159188B (en) | 2016-08-31 | 2016-08-31 | Through type liquid injection method and device for lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN106159188A CN106159188A (en) | 2016-11-23 |
| CN106159188B true CN106159188B (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610798929.2A Active CN106159188B (en) | 2016-08-31 | 2016-08-31 | Through type liquid injection method and device for lithium ion battery |
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| Country | Link |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112290169A (en) * | 2020-03-31 | 2021-01-29 | 蜂巢能源科技有限公司 | Lithium ion battery liquid injection device and method |
| CN115863935B (en) * | 2023-02-15 | 2023-12-08 | 宁德时代新能源科技股份有限公司 | Liquid injection valve and battery liquid injection method |
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| JP2010062163A (en) * | 2009-12-15 | 2010-03-18 | Sharp Corp | Manufacturing method of secondary battery |
| CN103022407A (en) * | 2012-12-24 | 2013-04-03 | 天津力神电池股份有限公司 | Device for discharging bubbles in electrolyte of lithium ion battery |
| CN103490036A (en) * | 2013-09-28 | 2014-01-01 | 山东润峰集团新能源科技有限公司 | Positive-suction type lithium ion battery liquid injection box |
| CN203871419U (en) * | 2013-09-16 | 2014-10-08 | 比克国际(天津)有限公司 | Battery injection device |
| CN105355835A (en) * | 2015-11-07 | 2016-02-24 | 合肥国轩高科动力能源有限公司 | Multistage buffer continuous vacuum adsorption type lithium ion battery liquid injection device |
| CN105514339A (en) * | 2015-12-28 | 2016-04-20 | 宁波世捷新能源科技有限公司 | Multistage buffering continuous vacuum absorption type electrolyte injection system with lithium-ion batteries |
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2016
- 2016-08-31 CN CN201610798929.2A patent/CN106159188B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010062163A (en) * | 2009-12-15 | 2010-03-18 | Sharp Corp | Manufacturing method of secondary battery |
| CN103022407A (en) * | 2012-12-24 | 2013-04-03 | 天津力神电池股份有限公司 | Device for discharging bubbles in electrolyte of lithium ion battery |
| CN203871419U (en) * | 2013-09-16 | 2014-10-08 | 比克国际(天津)有限公司 | Battery injection device |
| CN103490036A (en) * | 2013-09-28 | 2014-01-01 | 山东润峰集团新能源科技有限公司 | Positive-suction type lithium ion battery liquid injection box |
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| CN106159188A (en) | 2016-11-23 |
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