CN106159188A - A kind of through electrolyte filling method of lithium ion battery and device - Google Patents

A kind of through electrolyte filling method of lithium ion battery and device Download PDF

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Publication number
CN106159188A
CN106159188A CN201610798929.2A CN201610798929A CN106159188A CN 106159188 A CN106159188 A CN 106159188A CN 201610798929 A CN201610798929 A CN 201610798929A CN 106159188 A CN106159188 A CN 106159188A
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CN
China
Prior art keywords
lithium ion
ion battery
liquid injection
injection hole
electrolyte
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CN201610798929.2A
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Chinese (zh)
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CN106159188B (en
Inventor
倪世杰
郑浩
张宏立
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Hefei Gotion High Tech Power Energy Co Ltd
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Hefei Guoxuan High Tech Power Energy Co Ltd
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention provides a kind of through electrolyte filling method of lithium ion battery and device, and it is included on the cover plate of lithium ion battery offers two liquid injection holes;Be connected with electrolyte tank respectively by two liquid injection holes on lithium ion battery, vacuum pump connection carries out evacuation and fluid injection;The vacuum pumping and the fluid injection operation that make lithium ion battery are carried out simultaneously, when reservoir quantity meet require time, close electrolyte tank, and to battery continue evacuation 10 60s, to discharge the microbubble of inside lithium ion cell such that it is able to improve the fluid injection efficiency of battery and ensure the fluid injection quality of battery.

Description

A kind of through electrolyte filling method of lithium ion battery and device
Technical field
The present invention relates to a kind of lithium ion battery liquid injection technology, be specifically related 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 affect lithium ion battery mass production, battery performance and cost control one Individual key factor.At present, lithium ion battery liquid injection principle many employings negative pressure self-suction fluid injection mode, will the internal suction of battery container Become negative pressure, with pipeline, battery container is connected with electrolyte, make battery container internal and electrolyte forms gas between the spaces Pressure reduction, utilizes this air pressure official post electrolyte to be automatically drawn into inside battery container, completes automatic fluid injection.General full-automatic fluid injection sets Standby employing automatization (PLC) controls, and can accurately control reservoir quantity with locating batteries box and liquid injection module, automatically control workbench Lifting, the switch of valve, the height of negative-pressure vacuum degree, the number etc. of reservoir quantity, 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 due to only one of which fluid injection Hole, it is desirable to first to battery vacuum-pumping, then fluid injection, and easily produce bubble in the inside (the particularly corner of battery) of battery, Therefore battery liquid-filling efficiency and quality can not be guaranteed.
Summary of the invention
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, it comprises the following steps:
(1) on the cover plate of lithium ion battery, offer two liquid injection holes;
(2) be connected with electrolyte tank respectively by two liquid injection holes on lithium ion battery, vacuum pump connection carries out evacuation and note Liquid;
(3) reservoir quantity meets when requiring, first closes electrolyte tank, and vacuum pump works on 10-60s, to discharge lithium ion battery Internal microbubble.
The two of several lithium ion batteries liquid injection holes are together in parallel by connecting tube, divide by scheme further It is not connected with electrolyte tank, vacuum pump, carries out evacuation and fluid injection simultaneously.
Scheme, is respectively equipped with effusion meter between liquid injection hole and electrolyte tank, liquid injection hole and vacuum pump further, by stream On gauge, difference draws current reservoir quantity.
Another goal of the invention of the present invention is to provide the dress realizing the above-mentioned through electrolyte filling method of a kind of lithium ion battery Put, including lithium ion battery and electrolyte tank, the cover plate of described lithium ion battery offers left liquid injection hole and right liquid injection hole, institute Stating left liquid injection hole to be connected with electrolyte tank by feed tube, right liquid injection hole is connected with vacuum pump by drain pipe;Described feed tube On be sequentially provided with liquid feed valve, feed liquor effusion meter, drain pipe is sequentially provided with out flow meters and liquid valve.
Scheme, is provided with surge tank between described liquid valve and vacuum pump further, and described surge tank is provided with liquid level tube, slow Rush tank bottom end outlet and be provided with tapping valve.
Further scheme, described feed tube with the left liquid injection hole on several lithium ion batteries is carried out in parallel left be connected Pipe connects, and the arrival end of the left liquid injection hole of each lithium ion battery is equipped with left control valve;Described drain pipe with by several lithiums Right liquid injection hole on ion battery carries out the right connecting tube of parallel connection and connects, and the port of export of the right liquid injection hole of each lithium ion battery is equal It is provided with right control valve.
The present invention uses the through injection process of negative pressure that multiple batteries are carried out fluid injection, is led to by the battery with two liquid injection holes Crossing pipeline " in parallel " to connect, " in parallel " one end afterwards is connected with electrolyte tank, the other end is connected with vacuum pump, and sets in pipeline connection There are control valve and effusion meter, it is ensured that the reservoir quantity in each battery is consistent, without few note and the generation of leakage note situation.In fluid injection Time, after opening vacuum pump, first inside battery is carried out evacuation, then electrolyte can enter inside battery along pipeline, so The vacuum pumping of battery and fluid injection operation can carry out simultaneously, easy to operate and be not required to change connecting tube, greatly reduce note The liquid time.When in battery reservoir quantity meet require time, close corresponding control valve, and battery continued evacuation 10-60s, by electricity Microbubble internal in pond is discharged, and thereby may be ensured that the fluid injection quality of battery.
Use the electrolyte filling method of the present invention, it is possible to increase the fluid injection efficiency of battery and the fluid injection quality of guarantee battery.It addition, The excess electrolyte of inside battery and gas are collected in surge tank, and wherein, gas is discharged by vacuum pump, and electrolyte is received Collection reuses in surge tank.So the present invention is that a kind of continuous fluid injection, fluid injection efficiency height and electrolyte are without waste Efficiently fluid injection technology.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is present configuration schematic diagram,
Fig. 2 is lithium ion battery structure schematic diagram in the present invention.
In figure: 1-electrolyte tank, 2-feed tube, 3-liquid feed valve, the left connecting tube of 4-, the left control valve of 5-, 6-feed liquor effusion meter, 7-lithium ion battery, the left liquid injection port of 7-1, the right liquid injection port of 7-2,8-goes out flow meters, the right control valve of 9-, the right connecting tube of 10-, 11- Liquid valve, 12-drain pipe, 13-surge tank, 13-1 liquid level tube, 13-2 tapping valve, 14-vacuum pump.
Detailed description of the invention
Embodiment 1: single battery is carried out fluid injection:
(1) on the cover plate of lithium ion battery, offer two liquid injection holes;
(2) be connected with electrolyte tank respectively by two liquid injection holes on lithium ion battery, vacuum pump connection carries out evacuation and note Liquid;
(3) between liquid injection hole and electrolyte tank, liquid injection hole and vacuum pump, it is respectively equipped with effusion meter, is come by difference on effusion meter Draw the current reservoir quantity of lithium ion battery;Reservoir quantity meets when requiring, first closes electrolyte tank, and vacuum pump works on 10s, To discharge the microbubble of inside lithium ion cell.
Scheme, described left and right connecting tube is respectively equipped with effusion meter, is calculated currently by difference on effusion meter further Reservoir quantity.
Embodiment 2: multiple batteries are carried out fluid injection:
(1) on the cover plate of lithium ion battery, offer two liquid injection holes;
(2) by connecting tube, two liquid injection holes of multiple lithium ion batteries are together in parallel, the most respectively with electrolyte tank, true Empty pump connects, and carries out evacuation and fluid injection simultaneously;
(3) be connected with electrolyte tank respectively by two liquid injection holes on lithium ion battery, vacuum pump connection carries out evacuation and note Liquid;
(4) between liquid injection hole and electrolyte tank, liquid injection hole and vacuum pump, it is respectively equipped with effusion meter, is come by difference on effusion meter Draw the current reservoir quantity of lithium ion battery;Reservoir quantity meets when requiring, first closes electrolyte tank, and vacuum pump works on 60s, To discharge the microbubble of inside lithium ion cell.
Embodiment 3:
As it is shown in figure 1, a kind of through priming device of lithium ion battery, including lithium ion battery 7 and electrolyte tank 1, described lithium Offer on the cover plate of ion battery 7 left liquid injection hole 7-1 and right liquid injection hole 7-2, described left liquid injection hole 7-1 by feed tube 2 with Electrolyte tank 1 connects, and right liquid injection hole 7-2 is connected with vacuum pump 14 by drain pipe 12;It is sequentially provided with feed liquor on described feed tube 2 Valve 3, feed liquor effusion meter 6, drain pipe 12 is sequentially provided with out flow meters 8 and liquid valve 11.
Scheme, is provided with surge tank 13 between described liquid valve 11 and vacuum pump 14 further, and described surge tank 13 is provided with Liquid level tube 13-1, surge tank 13 bottom end outlet is provided with tapping valve 13-2.
Further scheme, described feed tube 2 with the left liquid injection hole 7-1 on several lithium ion batteries 7 is carried out in parallel 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;Described drain pipe 12 are connected with the right connecting tube 10 that the right liquid injection hole 7-2 on several lithium ion batteries 7 carries out parallel connection, each lithium ion battery The port of export of the right liquid injection hole 7-2 of 7 is equipped with right control valve 9.
Feed tube 2, drain pipe 12, left connecting tube 4, right connecting tube 10 are flexible pipe.
Should ensure that during battery liquid-filling that liquid feed valve 3, left control valve 5, right control valve 9 and liquid valve 11 are all opened, make electrolyte Tank 1, lithium ion battery 7, surge tank 13 and vacuum pump 14 keep breakthrough status.Open vacuum pump 14, first by lithium ion battery 7 The gas in portion is extracted out, now, due to pressure reduction, has electrolyte and flows in lithium ion battery 7 from electrolyte tank 1.Lithium-ion electric Two effusion meters on the left liquid injection hole 7-1 and right liquid injection hole 7-2 in pond 7 represent flow of electrolyte respectively, can be calculated by difference Go out the reservoir quantity of battery, when lithium ion battery 7 reaches reservoir quantity, first close liquid feed valve 3, vacuum pump 14 work on one section time Between to discharge the microbubble within lithium ion battery 7, it is ensured that lithium ion battery 7 fluid injection quality.Lithium ion battery 7 uses " in parallel " Connected mode, makes each battery not interfere with each other while fluid injection, it is ensured that to improve fluid injection efficiency while battery liquid-filling quality.Note During liquid, excess electrolyte and gas within lithium ion battery 7 are collected in surge tank 13, and wherein, gas passes through vacuum pump 14 discharge, and electrolyte is collected in surge tank 15, can observe electrolyte at surge tank by the liquid level tube 13-1 in surge tank Interior position, can be discharged by leakage fluid dram 13-2 time too much, make electrolyte be continued with.
The foregoing is only the preferred embodiment of patent of the present invention, be not used for limiting the practical range of the present invention;The most all The various equivalents that right under this invention is done, are scope of the presently claimed invention.

Claims (6)

1. the through electrolyte filling method of lithium ion battery, it is characterised in that: comprise the following steps:
(1) on the cover plate of lithium ion battery, offer two liquid injection holes;
(2) be connected with electrolyte tank respectively by two liquid injection holes on lithium ion battery, vacuum pump connection carries out evacuation and note Liquid;
(3) reservoir quantity meets when requiring, first closes electrolyte tank, and vacuum pump works on 10-60s, to discharge lithium ion battery Internal microbubble.
A kind of through electrolyte filling method of lithium ion battery the most according to claim 1, it is characterised in that: will by connecting tube Two liquid injection holes of several lithium ion batteries are together in parallel, and are connected with electrolyte tank, vacuum pump the most respectively, carry out simultaneously Evacuation and fluid injection.
A kind of through electrolyte filling method of lithium ion battery the most according to claim 1, it is characterised in that: at liquid injection hole and electricity Solve flow container, between liquid injection hole and vacuum pump, be respectively equipped with effusion meter, draw current reservoir quantity by difference on effusion meter.
4. realize a device for the through electrolyte filling method of a kind of lithium ion battery as claimed in claim 1, including lithium ion Battery (7) and electrolyte tank (1), it is characterised in that: offer left liquid injection hole (7-1) on the cover plate of described lithium ion battery (7) With right liquid injection hole (7-2), described left liquid injection hole (7-1) is connected with electrolyte tank (1) by feed tube (2), right liquid injection hole (7-2) It is connected with vacuum pump (14) by drain pipe (12);Liquid feed valve (3), feed liquor effusion meter it is sequentially provided with on described feed tube (2) (6), drain pipe (12) is sequentially provided with out flow meters (8) and liquid valve (11).
Device the most according to claim 4, it is characterised in that: it is provided with slow between described liquid valve (11) and vacuum pump (14) Rushing tank (13), described surge tank (13) is provided with liquid level tube (13-1), and surge tank (13) bottom end outlet is provided with tapping valve (13-2).
Device the most according to claim 4, it is characterised in that: described feed tube (2) with by several lithium ion batteries (7) On left liquid injection hole (7-1) carry out parallel connection left connecting tube (4) connect, the left liquid injection hole (7-1) of each lithium ion battery (7) Arrival end is equipped with left control valve (5);Described drain pipe (12) with by the right liquid injection hole (7-on several lithium ion batteries (7) 2) the right connecting tube (10) carrying out parallel connection connects, and the port of export of the right liquid injection hole (7-2) of each lithium ion battery (7) is equipped with the right side Control valve (9).
CN201610798929.2A 2016-08-31 2016-08-31 A kind of through electrolyte filling method of lithium ion battery and device Active CN106159188B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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

Citations (6)

* Cited by examiner, † Cited by third party
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
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 liquid charging tank for lithium ion battery
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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 liquid charging tank for lithium ion battery
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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